{"id":1903,"date":"2026-04-30T05:27:45","date_gmt":"2026-04-30T05:27:45","guid":{"rendered":"https:\/\/photo-detector.com\/?p=1903"},"modified":"2026-04-30T05:27:50","modified_gmt":"2026-04-30T05:27:50","slug":"tamano-del-area-fotosensible","status":"publish","type":"post","link":"https:\/\/photo-detector.com\/es\/photosensitive-area-size\/","title":{"rendered":"C\u00f3mo el tama\u00f1o del \u00e1rea fotosensible afecta el rendimiento del sensor"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">If you\u2019ve ever found yourself staring at a datasheet wondering whether to pick a 1 mm\u00b2 or 10 mm\u00b2 photodiode, you\u2019re not alone. The <strong>photosensitive area size<\/strong> is one of those sneaky parameters that quietly controls almost everything else in your sensor\u2019s behavior.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">After spending the last twelve years helping clients pick the right photodiodes for everything from laser alignment systems to medical analyzers, I can tell you this: size really does matter \u2014 but not always in the way you think.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Let\u2019s talk about what actually happens when you make the <strong>active area<\/strong> bigger (or smaller).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">The Direct Relationship Between Photosensitive Area and Key Performance Metrics<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The most obvious effect is on light collection. Double the <strong>photosensitive area size<\/strong>, and you roughly double the photocurrent for the same light intensity. Sounds great, right?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Not so fast.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Here\u2019s what actually changes:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Capacitance<\/strong> increases almost linearly with area<\/li>\n\n\n\n<li><strong>Dark current<\/strong> scales with area<\/li>\n\n\n\n<li><strong>Response speed<\/strong> usually drops<\/li>\n\n\n\n<li><strong>Cost<\/strong> climbs (sometimes dramatically)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">I\u2019ve put together a quick comparison table based on real Si PIN photodiodes we commonly recommend:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Active Area (mm\u00b2)<\/th><th>Typical Capacitance (pF)<\/th><th>Rise Time (ns) @ 10V<\/th><th>Dark Current (nA)<\/th><th>Relative Price<\/th><\/tr><\/thead><tbody><tr><td>1.0 (1\u00d71mm)<\/td><td>3<\/td><td>8<\/td><td>0.05<\/td><td>1.0x<\/td><\/tr><tr><td>7.8 (2.8\u00d72.8mm)<\/td><td>20<\/td><td>25<\/td><td>0.4<\/td><td>1.8x<\/td><\/tr><tr><td>13 (3.6\u00d73.6mm)<\/td><td>35<\/td><td>45<\/td><td>0.8<\/td><td>2.7x<\/td><\/tr><tr><td>100 (10\u00d710mm)<\/td><td>250<\/td><td>280<\/td><td>6.5<\/td><td>9.5x<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Data compiled from BeePhoton\u2019s Si PIN photodiode series measured at 10V reverse bias and 850nm.<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">You can see the trade-off is pretty brutal.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Why Junction Capacitance Explodes with Larger Photosensitive Area Size<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">This is the part most engineers feel in their circuits.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The junction capacitance ( C_j ) of a photodiode is approximately:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Cj \u2248 \u03b5 \u00d7 A \/ W<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Where:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u03b5 is the permittivity of silicon<\/li>\n\n\n\n<li>A is the <strong>photosensitive area<\/strong><\/li>\n\n\n\n<li>W is the depletion width<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">So when you increase the <strong>active area<\/strong>, capacitance goes up almost proportionally unless you dramatically increase the reverse voltage to widen the depletion region.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Why does this matter?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Because the RC time constant formed with your amplifier\u2019s feedback resistor or the cable capacitance directly limits bandwidth. I\u2019ve seen many projects fail because someone picked a large-area photodiode thinking \u201cmore light = better signal,\u201d only to discover their bandwidth was trashed by 200pF of capacitance.<\/p>\n\n\n\n<div data-block-name=\"woocommerce\/single-product\" data-product-id=\"741\" data-wp-context=\"{&quot;productId&quot;:741,&quot;variationId&quot;:null}\" data-wp-interactive=\"woocommerce\/single-product\" class=\"wp-block-woocommerce-single-product woocommerce\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-7387b849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div data-block-name=\"woocommerce\/product-gallery\" data-wp-context=\"{&quot;imageData&quot;:[752],&quot;isDialogOpen&quot;:false,&quot;isDragging&quot;:false,&quot;touchStartX&quot;:0,&quot;touchCurrentX&quot;:0,&quot;productId&quot;:&quot;741&quot;,&quot;selectedImageId&quot;:752,&quot;thumbnailsOverflow&quot;:{&quot;top&quot;:false,&quot;bottom&quot;:false,&quot;left&quot;:false,&quot;right&quot;:false},&quot;hideNextPreviousButtons&quot;:true,&quot;isDisabledPrevious&quot;:true,&quot;isDisabledNext&quot;:false,&quot;ariaLabelPrevious&quot;:&quot;Imagen anterior&quot;,&quot;ariaLabelNext&quot;:&quot;Imagen siguiente&quot;}\" data-wp-interactive=\"woocommerce\/product-gallery\" class=\"wp-block-woocommerce-product-gallery wc-block-product-gallery  is-single-product-gallery-image is-layout-flex wp-container-woocommerce-product-gallery-is-layout-a2f35af1 wp-block-woocommerce-product-gallery-is-layout-flex\">\n\n\t\t\t<div data-block-name=\"woocommerce\/product-gallery-large-image\" class=\"wc-block-product-gallery-large-image wp-block-woocommerce-product-gallery-large-image\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<ul\n\t\t\t\tclass=\"wc-block-product-gallery-large-image__container\"\n\t\t\t\tdata-wp-interactive=\"woocommerce\/product-gallery\"\n\t\t\t\tdata-wp-on--keydown=\"actions.onViewerImageKeyDown\"\n\t\t\t\taria-label=\"Galer\u00eda del producto\"\n\t\t\t\ttabindex=\"0\"\n\t\t\t\taria-roledescription=\"carousel\"\n\t\t\t>\n\t\t\t\t\t\t\t\t\t<li\n\t\t\t\t\t\tclass=\"wc-block-product-gallery-large-image__wrapper\"\n\t\t\t\t\t>\n\t\t\t\t\t\t<div data-block-name=\"woocommerce\/product-image\" data-is-descendent-of-single-product-block=\"true\" data-show-product-link=\"false\" data-show-sale-badge=\"false\" class=\"wc-block-components-product-image wc-block-grid__product-image wc-block-components-product-image--aspect-ratio-auto wp-block-woocommerce-product-image\"><a tabindex=\"-1\" href=\"#\"   ><img fetchpriority=\"high\" decoding=\"async\" data-wp-on--click=\"actions.openDialog\" data-wp-on--mouseleave=\"actions.resetZoom\" data-wp-on--mousemove=\"actions.startZoom\" data-wp-on--touchend=\"actions.onTouchEnd\" data-wp-on--touchmove=\"actions.onTouchMove\" data-wp-on--touchstart=\"actions.onTouchStart\" draggable=\"false\" fetchpriority=\"high\" tabindex=\"-1\" width=\"600\" height=\"600\" src=\"https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/11\/PDCC34-501-600x600.webp\" class=\"attachment-woocommerce_single size-woocommerce_single wc-block-woocommerce-product-gallery-large-image__image wc-block-woocommerce-product-gallery-large-image__image--full-screen-on-click wc-block-woocommerce-product-gallery-large-image__image--hoverZoom\" alt=\"High Stability PIN Photodiode - NIR Enhanced for Industrial Sensing\" data-testid=\"product-image\" data-image-id=\"752\" style=\"object-fit:cover;\" loading=\"eager\" srcset=\"https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/11\/PDCC34-501-600x600.webp 600w, https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/11\/PDCC34-501-300x300.webp 300w, https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/11\/PDCC34-501-1024x1024.webp 1024w, https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/11\/PDCC34-501-150x150.webp 150w, https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/11\/PDCC34-501-768x768.webp 768w, https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/11\/PDCC34-501-1536x1536.webp 1536w, https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/11\/PDCC34-501-2048x2048.webp 2048w, https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/11\/PDCC34-501-100x100.webp 100w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><div class=\"wc-block-components-product-image__inner-container\"><\/div><\/a><\/div>\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<div class=\"wc-block-product-gallery-large-image__inner-blocks\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t<dialog inert\n\t\t\t\tdata-wp-bind--open=\"context.isDialogOpen\"\n\t\t\t\tdata-wp-bind--inert=\"!context.isDialogOpen\"\n\t\t\t\tdata-wp-on--close=\"actions.closeDialog\"\n\t\t\t\tdata-wp-on--keydown=\"actions.onDialogKeyDown\"\n\t\t\t\tdata-wp-watch=\"callbacks.dialogStateChange\"\n\t\t\t\tclass=\"wc-block-product-gallery-dialog\"\n\t\t\t\trole=\"dialog\"\n\t\t\t\taria-modal=\"true\"\n\t\t\t\taria-label=\"Product Gallery\">\n\t\t\t\t<div class=\"wc-block-product-gallery-dialog__header\">\n\t\t\t\t\t<button class=\"wc-block-product-gallery-dialog__close-button\" data-wp-on--click=\"actions.closeDialog\" aria-label=\"Cerrar ventana\">\n\t\t\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 24 24\" width=\"24\" height=\"24\" aria-hidden=\"true\" focusable=\"false\">\n\t\t\t\t\t\t\t<path d=\"M13 11.8l6.1-6.3-1-1-6.1 6.2-6.1-6.2-1 1 6.1 6.3-6.5 6.7 1 1 6.5-6.6 6.5 6.6 1-1z\"><\/path>\n\t\t\t\t\t\t<\/svg>\n\t\t\t\t\t<\/button>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"wc-block-product-gallery-dialog__content\">\n\t\t\t\t\t\t\t\t\t\t\t\t<img data-image-id='752' src='https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/11\/PDCC34-501-scaled.webp' srcset='https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/11\/PDCC34-501-scaled.webp 2560w, https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/11\/PDCC34-501-300x300.webp 300w, https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/11\/PDCC34-501-1024x1024.webp 1024w, https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/11\/PDCC34-501-150x150.webp 150w, https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/11\/PDCC34-501-768x768.webp 768w, https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/11\/PDCC34-501-1536x1536.webp 1536w, https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/11\/PDCC34-501-2048x2048.webp 2048w, https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/11\/PDCC34-501-600x600.webp 600w, https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/11\/PDCC34-501-100x100.webp 100w' sizes='(max-width: 2560px) 100vw, 2560px' loading='fetchpriority=\"high\"' decoding='async' alt='High Stability PIN Photodiode - NIR Enhanced for Industrial Sensing' \/>\t\t\t\t<\/div>\n\t\t\t<\/dialog>\n\t\t<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\"><h2 class=\"wp-block-post-title\"><a href=\"https:\/\/photo-detector.com\/es\/product\/high-stability-pin-photodiode\/\" target=\"_blank\" >Si PIN Photodiode with NIR sensitivity enchanced (350-1100nm) PDCC34-501<\/a><\/h2>\n\n<div data-block-name=\"woocommerce\/product-summary\" data-is-descendent-of-single-product-block=\"true\" class=\"wp-block-woocommerce-product-summary\"><div class=\"wc-block-components-product-summary \" style=\"\">\n\t\t\t\t<p>Bee Photon offers a High Stability PIN Photodiode for precise industrial sensing. This NIR enhanced photodiode ensures reliable measurements from 350-1100nm. A top choice for a high stability photodiode.<\/p>\n\n\t\t\t<\/div><\/div>\n\n\n<div data-block-name=\"woocommerce\/product-meta\" class=\"wp-block-woocommerce-product-meta\">\n<div class=\"wp-block-group is-nowrap is-layout-flex wp-container-core-group-is-layout-7387b849 wp-block-group-is-layout-flex\">\n\n<div class=\"taxonomy-product_tag wp-block-post-terms\"><span class=\"wp-block-post-terms__prefix\">Tag\uff1a<\/span><a href=\"https:\/\/photo-detector.com\/es\/product-tag\/350-1100nm-sensor\/\" rel=\"tag\">350-1100nm Sensor<\/a><span class=\"wp-block-post-terms__separator\">, <\/span><a href=\"https:\/\/photo-detector.com\/es\/product-tag\/cob-photodiode\/\" rel=\"tag\">COB Photodiode<\/a><span class=\"wp-block-post-terms__separator\">, <\/span><a href=\"https:\/\/photo-detector.com\/es\/product-tag\/high-stability-pin-photodiode\/\" rel=\"tag\">High Stability PIN Photodiode<\/a><span class=\"wp-block-post-terms__separator\">, <\/span><a href=\"https:\/\/photo-detector.com\/es\/product-tag\/industrial-sensor\/\" rel=\"tag\">Industrial Sensor<\/a><span class=\"wp-block-post-terms__separator\">, <\/span><a href=\"https:\/\/photo-detector.com\/es\/product-tag\/nir-photodiode\/\" rel=\"tag\">NIR Photodiode<\/a><span class=\"wp-block-post-terms__separator\">, <\/span><a href=\"https:\/\/photo-detector.com\/es\/product-tag\/optical-sensor\/\" rel=\"tag\">optical sensor<\/a><span class=\"wp-block-post-terms__separator\">, <\/span><a href=\"https:\/\/photo-detector.com\/es\/product-tag\/photodetector\/\" rel=\"tag\">Photodetector<\/a><span class=\"wp-block-post-terms__separator\">, <\/span><a href=\"https:\/\/photo-detector.com\/es\/product-tag\/resin-window\/\" rel=\"tag\">Resin Window<\/a><span class=\"wp-block-post-terms__separator\">, <\/span><a href=\"https:\/\/photo-detector.com\/es\/product-tag\/si-pin-photodiode\/\" rel=\"tag\">Si PIN photodiode<\/a><\/div><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Speed vs. Photosensitive Area Size: The Real Story<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A lot of marketing material says \u201clarger area = slower response.\u201d That\u2019s only half true.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">What actually happens is the rise time has two main components:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Transit time<\/strong> (time for carriers to cross the depletion region)<\/li>\n\n\n\n<li><strong>RC-limited time<\/strong> (caused by capacitance)<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">For small <strong>photosensitive area size<\/strong> (&lt; 4 mm\u00b2), transit time usually dominates. For larger detectors, RC effects take over.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In one industrial laser triangulation project we worked on, switching from a 5.8 mm\u00b2 to a 1.2 mm\u00b2 photodiode improved the system bandwidth from 8 MHz to over 35 MHz \u2014 even though the smaller diode collected less light. The improved SNR at high frequency more than compensated for the lower photocurrent.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Noise Performance and Large Area Photodiodes<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">This is where things get interesting.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Shot noise from dark current increases with the square root of area. But thermal (Johnson) noise is usually dominated by the feedback resistor, not the diode itself.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">However, there\u2019s another sneaky effect: as <strong>photosensitive area size<\/strong> grows, so does the chance of defects in the silicon. More defects = higher 1\/f noise and higher leakage current variation across temperature.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">I\u2019ve seen some \u201clarge area photodiodes\u201d that looked perfect at room temperature but became unusable above 50\u00b0C because dark current doubled every 8\u201310\u00b0C instead of the usual 10\u00b0C.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How to Choose the Right Photosensitive Area Size for Your Application<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Here\u2019s the practical framework I use with clients:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Choose small active area (\u2264 4 mm\u00b2) when you need:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>High bandwidth (> 10 MHz)<\/li>\n\n\n\n<li>Low noise in high-frequency applications<\/li>\n\n\n\n<li>Tight cost control<\/li>\n\n\n\n<li>You can focus or collimate your light source<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Choose larger photosensitive area size (&gt; 9 mm\u00b2) when:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Light is diffuse or scattered<\/li>\n\n\n\n<li>Alignment is difficult or unstable<\/li>\n\n\n\n<li>You\u2019re working at very low light levels and speed isn\u2019t critical<\/li>\n\n\n\n<li>You need maximum signal in DC or low-frequency measurements<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">For example, in fluorescence detection systems, we often recommend our <strong>large area photodiode<\/strong> options (typically 10\u201325 mm\u00b2) because the emitted light is weak and spreads out. But in LiDAR or optical communication, we push clients toward the smallest detector they can possibly use.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Real-World Trade-off Examples from the Field<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Last year a medical device company came to us trying to detect very weak optical signals through tissue. Their first instinct was to use the biggest photodiode available. After testing, we actually went with a 2.9 \u00d7 2.9 mm active area Si PIN photodiode from our standard series.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Why?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Because the combination of lower capacitance and lower dark current allowed us to use higher gain in the transimpedance amplifier without hitting bandwidth or noise limits. The final system achieved 6 dB better SNR than the \u201cbigger is better\u201d approach.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Another client in industrial automation needed to detect a laser spot over a 15-meter distance with \u00b10.5 mm accuracy. Everyone expected we\u2019d need a large area photodiode. Instead, we used a small 1 mm\u00b2 quadrant detector with excellent optics. The smaller <strong>photosensitive area size<\/strong> gave us much faster response and better position resolution.<\/p>\n\n\n\n<div data-block-name=\"woocommerce\/single-product\" data-product-id=\"738\" data-wp-context=\"{&quot;productId&quot;:738,&quot;variationId&quot;:null}\" data-wp-interactive=\"woocommerce\/single-product\" class=\"wp-block-woocommerce-single-product woocommerce\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-7387b849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div data-block-name=\"woocommerce\/product-gallery\" data-wp-context=\"{&quot;imageData&quot;:[740],&quot;isDialogOpen&quot;:false,&quot;isDragging&quot;:false,&quot;touchStartX&quot;:0,&quot;touchCurrentX&quot;:0,&quot;productId&quot;:&quot;738&quot;,&quot;selectedImageId&quot;:740,&quot;thumbnailsOverflow&quot;:{&quot;top&quot;:false,&quot;bottom&quot;:false,&quot;left&quot;:false,&quot;right&quot;:false},&quot;hideNextPreviousButtons&quot;:true,&quot;isDisabledPrevious&quot;:true,&quot;isDisabledNext&quot;:false,&quot;ariaLabelPrevious&quot;:&quot;Imagen anterior&quot;,&quot;ariaLabelNext&quot;:&quot;Imagen siguiente&quot;}\" data-wp-interactive=\"woocommerce\/product-gallery\" class=\"wp-block-woocommerce-product-gallery wc-block-product-gallery  is-single-product-gallery-image is-layout-flex wp-container-woocommerce-product-gallery-is-layout-a2f35af1 wp-block-woocommerce-product-gallery-is-layout-flex\">\n\n\t\t\t<div data-block-name=\"woocommerce\/product-gallery-large-image\" class=\"wc-block-product-gallery-large-image wp-block-woocommerce-product-gallery-large-image\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<ul\n\t\t\t\tclass=\"wc-block-product-gallery-large-image__container\"\n\t\t\t\tdata-wp-interactive=\"woocommerce\/product-gallery\"\n\t\t\t\tdata-wp-on--keydown=\"actions.onViewerImageKeyDown\"\n\t\t\t\taria-label=\"Galer\u00eda del producto\"\n\t\t\t\ttabindex=\"0\"\n\t\t\t\taria-roledescription=\"carousel\"\n\t\t\t>\n\t\t\t\t\t\t\t\t\t<li\n\t\t\t\t\t\tclass=\"wc-block-product-gallery-large-image__wrapper\"\n\t\t\t\t\t>\n\t\t\t\t\t\t<div data-block-name=\"woocommerce\/product-image\" data-is-descendent-of-single-product-block=\"true\" data-show-product-link=\"false\" data-show-sale-badge=\"false\" class=\"wc-block-components-product-image wc-block-grid__product-image wc-block-components-product-image--aspect-ratio-auto wp-block-woocommerce-product-image\"><a tabindex=\"-1\" href=\"#\"   ><img fetchpriority=\"high\" decoding=\"async\" data-wp-on--click=\"actions.openDialog\" data-wp-on--mouseleave=\"actions.resetZoom\" data-wp-on--mousemove=\"actions.startZoom\" data-wp-on--touchend=\"actions.onTouchEnd\" data-wp-on--touchmove=\"actions.onTouchMove\" data-wp-on--touchstart=\"actions.onTouchStart\" draggable=\"false\" fetchpriority=\"high\" tabindex=\"-1\" width=\"600\" height=\"600\" src=\"https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/11\/PDCC100-001-600x600.webp\" class=\"attachment-woocommerce_single size-woocommerce_single wc-block-woocommerce-product-gallery-large-image__image wc-block-woocommerce-product-gallery-large-image__image--full-screen-on-click wc-block-woocommerce-product-gallery-large-image__image--hoverZoom\" alt=\"Si PIN Photodiode with low dark current (350-1060nm) PDCC100-001\" data-testid=\"product-image\" data-image-id=\"740\" style=\"object-fit:cover;\" loading=\"eager\" srcset=\"https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/11\/PDCC100-001-600x600.webp 600w, https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/11\/PDCC100-001-300x300.webp 300w, https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/11\/PDCC100-001-1024x1024.webp 1024w, https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/11\/PDCC100-001-150x150.webp 150w, https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/11\/PDCC100-001-768x768.webp 768w, https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/11\/PDCC100-001-1536x1536.webp 1536w, https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/11\/PDCC100-001-2048x2048.webp 2048w, https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/11\/PDCC100-001-100x100.webp 100w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><div class=\"wc-block-components-product-image__inner-container\"><\/div><\/a><\/div>\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<div class=\"wc-block-product-gallery-large-image__inner-blocks\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t<dialog inert\n\t\t\t\tdata-wp-bind--open=\"context.isDialogOpen\"\n\t\t\t\tdata-wp-bind--inert=\"!context.isDialogOpen\"\n\t\t\t\tdata-wp-on--close=\"actions.closeDialog\"\n\t\t\t\tdata-wp-on--keydown=\"actions.onDialogKeyDown\"\n\t\t\t\tdata-wp-watch=\"callbacks.dialogStateChange\"\n\t\t\t\tclass=\"wc-block-product-gallery-dialog\"\n\t\t\t\trole=\"dialog\"\n\t\t\t\taria-modal=\"true\"\n\t\t\t\taria-label=\"Product Gallery\">\n\t\t\t\t<div class=\"wc-block-product-gallery-dialog__header\">\n\t\t\t\t\t<button class=\"wc-block-product-gallery-dialog__close-button\" data-wp-on--click=\"actions.closeDialog\" aria-label=\"Cerrar ventana\">\n\t\t\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 24 24\" width=\"24\" height=\"24\" aria-hidden=\"true\" focusable=\"false\">\n\t\t\t\t\t\t\t<path d=\"M13 11.8l6.1-6.3-1-1-6.1 6.2-6.1-6.2-1 1 6.1 6.3-6.5 6.7 1 1 6.5-6.6 6.5 6.6 1-1z\"><\/path>\n\t\t\t\t\t\t<\/svg>\n\t\t\t\t\t<\/button>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"wc-block-product-gallery-dialog__content\">\n\t\t\t\t\t\t\t\t\t\t\t\t<img data-image-id='740' src='https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/11\/PDCC100-001-scaled.webp' srcset='https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/11\/PDCC100-001-scaled.webp 2560w, https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/11\/PDCC100-001-300x300.webp 300w, https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/11\/PDCC100-001-1024x1024.webp 1024w, https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/11\/PDCC100-001-150x150.webp 150w, https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/11\/PDCC100-001-768x768.webp 768w, https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/11\/PDCC100-001-1536x1536.webp 1536w, https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/11\/PDCC100-001-2048x2048.webp 2048w, https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/11\/PDCC100-001-600x600.webp 600w, https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/11\/PDCC100-001-100x100.webp 100w' sizes='(max-width: 2560px) 100vw, 2560px' loading='fetchpriority=\"high\"' decoding='async' alt='Si PIN Photodiode with low dark current (350-1060nm) PDCC100-001: imagen 1' \/>\t\t\t\t<\/div>\n\t\t\t<\/dialog>\n\t\t<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\"><h2 class=\"wp-block-post-title\"><a href=\"https:\/\/photo-detector.com\/es\/product\/custom-si-pin-photodiode\/\" target=\"_blank\" >Si PIN Photodiode with low dark current (350-1060nm) PDCC100-001<\/a><\/h2>\n\n<div data-block-name=\"woocommerce\/product-summary\" data-is-descendent-of-single-product-block=\"true\" class=\"wp-block-woocommerce-product-summary\"><div class=\"wc-block-components-product-summary \" style=\"\">\n\t\t\t\t<p>Looking for a custom Si PIN photodiode? Bee Photon provides OEM solutions with low dark current and a 350-1060nm range. We partner with B2B clients to develop photodiodes tailored to your specific needs.<\/p>\n\n\t\t\t<\/div><\/div>\n\n\n<div data-block-name=\"woocommerce\/product-meta\" class=\"wp-block-woocommerce-product-meta\">\n<div class=\"wp-block-group is-nowrap is-layout-flex wp-container-core-group-is-layout-7387b849 wp-block-group-is-layout-flex\">\n\n<div class=\"taxonomy-product_tag wp-block-post-terms\"><span class=\"wp-block-post-terms__prefix\">Tag\uff1a<\/span><a href=\"https:\/\/photo-detector.com\/es\/product-tag\/b2b-sensor-solutions\/\" rel=\"tag\">B2B Sensor Solutions<\/a><span class=\"wp-block-post-terms__separator\">, <\/span><a href=\"https:\/\/photo-detector.com\/es\/product-tag\/custom-optoelectronics\/\" rel=\"tag\">Custom Optoelectronics<\/a><span class=\"wp-block-post-terms__separator\">, <\/span><a href=\"https:\/\/photo-detector.com\/es\/product-tag\/custom-photodiode\/\" rel=\"tag\">Custom Photodiode<\/a><span class=\"wp-block-post-terms__separator\">, <\/span><a href=\"https:\/\/photo-detector.com\/es\/product-tag\/custom-si-pin-photodiode\/\" rel=\"tag\">Custom Si PIN Photodiode<\/a><span class=\"wp-block-post-terms__separator\">, <\/span><a href=\"https:\/\/photo-detector.com\/es\/product-tag\/oem-components\/\" rel=\"tag\">OEM Components<\/a><span class=\"wp-block-post-terms__separator\">, <\/span><a href=\"https:\/\/photo-detector.com\/es\/product-tag\/photodetector-manufacturer\/\" rel=\"tag\">Photodetector Manufacturer<\/a><\/div><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Understanding the Cost Implications<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Let\u2019s be honest \u2014 bigger isn\u2019t just electrically different, it\u2019s financially different too.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Silicon real estate is expensive. A 10 \u00d7 10 mm photodiode doesn\u2019t just cost more because of the package \u2014 the yield drops significantly as the active area grows due to defects.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">That\u2019s why you\u2019ll often see price jumping sharply above 5\u20137 mm\u00b2.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Our <strong><em><a href=\"\/product-category\/si-pin-photodiodes\/\" target=\"_blank\" rel=\"noreferrer noopener\">Si PIN photodiodes<\/a><\/em><\/strong> reflect this reality. The jump from 2.9\u00d72.9mm to 5.8\u00d75.8mm typically doubles the unit price in volume.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Practical Tips for Working with Different Photosensitive Area Sizes<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">If you\u2019re designing with larger area detectors:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Consider using a bootstrap amplifier or current amplifier instead of traditional TIA to reduce the effect of capacitance<\/li>\n\n\n\n<li>Pay serious attention to stray capacitance in your PCB layout<\/li>\n\n\n\n<li>Consider using higher reverse bias (if your diode can handle it) to reduce capacitance<\/li>\n\n\n\n<li>Don\u2019t forget temperature effects \u2014 they get worse with larger areas<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">For smaller detectors, your main challenge is usually collecting enough light. Here good optics and proper alignment become critical.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Making the Right Choice for Your Next Project<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">At the end of the day, there\u2019s no universal \u201cbest\u201d <strong>photosensitive area size<\/strong>. There\u2019s only the best size for <em>your<\/em> specific requirements, budget, and constraints.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The key is understanding the real trade-offs instead of just picking the biggest detector that fits in your package.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If you\u2019re currently wrestling with this decision, I\u2019d be happy to look at your requirements. Drop us a message on our <strong><em><a href=\"https:\/\/photo-detector.com\/contact-us\/\" target=\"_blank\" rel=\"noreferrer noopener\">contact page<\/a><\/em><\/strong> or shoot an email to <strong><em><a href=\"mailto:info@photo-detector.com\">info@photo-detector.com<\/a><\/em><\/strong>. We\u2019ve helped dozens of companies navigate exactly these choices, and we\u2019re pretty good at finding the sweet spot between performance and cost.<\/p>\n\n\n\n<div data-block-name=\"woocommerce\/single-product\" data-product-id=\"682\" data-wp-context=\"{&quot;productId&quot;:682,&quot;variationId&quot;:null}\" data-wp-interactive=\"woocommerce\/single-product\" class=\"wp-block-woocommerce-single-product woocommerce\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-7387b849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div data-block-name=\"woocommerce\/product-gallery\" data-wp-context=\"{&quot;imageData&quot;:[683],&quot;isDialogOpen&quot;:false,&quot;isDragging&quot;:false,&quot;touchStartX&quot;:0,&quot;touchCurrentX&quot;:0,&quot;productId&quot;:&quot;682&quot;,&quot;selectedImageId&quot;:683,&quot;thumbnailsOverflow&quot;:{&quot;top&quot;:false,&quot;bottom&quot;:false,&quot;left&quot;:false,&quot;right&quot;:false},&quot;hideNextPreviousButtons&quot;:true,&quot;isDisabledPrevious&quot;:true,&quot;isDisabledNext&quot;:false,&quot;ariaLabelPrevious&quot;:&quot;Imagen anterior&quot;,&quot;ariaLabelNext&quot;:&quot;Imagen siguiente&quot;}\" data-wp-interactive=\"woocommerce\/product-gallery\" class=\"wp-block-woocommerce-product-gallery wc-block-product-gallery  is-single-product-gallery-image is-layout-flex wp-container-woocommerce-product-gallery-is-layout-a2f35af1 wp-block-woocommerce-product-gallery-is-layout-flex\">\n\n\t\t\t<div data-block-name=\"woocommerce\/product-gallery-large-image\" class=\"wc-block-product-gallery-large-image wp-block-woocommerce-product-gallery-large-image\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<ul\n\t\t\t\tclass=\"wc-block-product-gallery-large-image__container\"\n\t\t\t\tdata-wp-interactive=\"woocommerce\/product-gallery\"\n\t\t\t\tdata-wp-on--keydown=\"actions.onViewerImageKeyDown\"\n\t\t\t\taria-label=\"Galer\u00eda del producto\"\n\t\t\t\ttabindex=\"0\"\n\t\t\t\taria-roledescription=\"carousel\"\n\t\t\t>\n\t\t\t\t\t\t\t\t\t<li\n\t\t\t\t\t\tclass=\"wc-block-product-gallery-large-image__wrapper\"\n\t\t\t\t\t>\n\t\t\t\t\t\t<div data-block-name=\"woocommerce\/product-image\" data-is-descendent-of-single-product-block=\"true\" data-show-product-link=\"false\" data-show-sale-badge=\"false\" class=\"wc-block-components-product-image wc-block-grid__product-image wc-block-components-product-image--aspect-ratio-auto wp-block-woocommerce-product-image\"><a tabindex=\"-1\" href=\"#\"   ><img fetchpriority=\"high\" decoding=\"async\" data-wp-on--click=\"actions.openDialog\" data-wp-on--mouseleave=\"actions.resetZoom\" data-wp-on--mousemove=\"actions.startZoom\" data-wp-on--touchend=\"actions.onTouchEnd\" data-wp-on--touchmove=\"actions.onTouchMove\" data-wp-on--touchstart=\"actions.onTouchStart\" draggable=\"false\" fetchpriority=\"high\" tabindex=\"-1\" width=\"600\" height=\"600\" src=\"https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/10\/PDCT01-201-600x600.webp\" class=\"attachment-woocommerce_single size-woocommerce_single wc-block-woocommerce-product-gallery-large-image__image wc-block-woocommerce-product-gallery-large-image__image--full-screen-on-click wc-block-woocommerce-product-gallery-large-image__image--hoverZoom\" alt=\"Low Dark Current Si PIN Photodiode - 350-1060nm for Laser Detection\" data-testid=\"product-image\" data-image-id=\"683\" style=\"object-fit:cover;\" loading=\"eager\" srcset=\"https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/10\/PDCT01-201-600x600.webp 600w, https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/10\/PDCT01-201-300x300.webp 300w, https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/10\/PDCT01-201-1024x1024.webp 1024w, https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/10\/PDCT01-201-150x150.webp 150w, https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/10\/PDCT01-201-768x768.webp 768w, https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/10\/PDCT01-201-1536x1536.webp 1536w, https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/10\/PDCT01-201-2048x2048.webp 2048w, https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/10\/PDCT01-201-100x100.webp 100w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><div class=\"wc-block-components-product-image__inner-container\"><\/div><\/a><\/div>\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<div class=\"wc-block-product-gallery-large-image__inner-blocks\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t<dialog inert\n\t\t\t\tdata-wp-bind--open=\"context.isDialogOpen\"\n\t\t\t\tdata-wp-bind--inert=\"!context.isDialogOpen\"\n\t\t\t\tdata-wp-on--close=\"actions.closeDialog\"\n\t\t\t\tdata-wp-on--keydown=\"actions.onDialogKeyDown\"\n\t\t\t\tdata-wp-watch=\"callbacks.dialogStateChange\"\n\t\t\t\tclass=\"wc-block-product-gallery-dialog\"\n\t\t\t\trole=\"dialog\"\n\t\t\t\taria-modal=\"true\"\n\t\t\t\taria-label=\"Product Gallery\">\n\t\t\t\t<div class=\"wc-block-product-gallery-dialog__header\">\n\t\t\t\t\t<button class=\"wc-block-product-gallery-dialog__close-button\" data-wp-on--click=\"actions.closeDialog\" aria-label=\"Cerrar ventana\">\n\t\t\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 24 24\" width=\"24\" height=\"24\" aria-hidden=\"true\" focusable=\"false\">\n\t\t\t\t\t\t\t<path d=\"M13 11.8l6.1-6.3-1-1-6.1 6.2-6.1-6.2-1 1 6.1 6.3-6.5 6.7 1 1 6.5-6.6 6.5 6.6 1-1z\"><\/path>\n\t\t\t\t\t\t<\/svg>\n\t\t\t\t\t<\/button>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"wc-block-product-gallery-dialog__content\">\n\t\t\t\t\t\t\t\t\t\t\t\t<img data-image-id='683' src='https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/10\/PDCT01-201-scaled.webp' srcset='https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/10\/PDCT01-201-scaled.webp 2560w, https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/10\/PDCT01-201-300x300.webp 300w, https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/10\/PDCT01-201-1024x1024.webp 1024w, https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/10\/PDCT01-201-150x150.webp 150w, https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/10\/PDCT01-201-768x768.webp 768w, https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/10\/PDCT01-201-1536x1536.webp 1536w, https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/10\/PDCT01-201-2048x2048.webp 2048w, https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/10\/PDCT01-201-600x600.webp 600w, https:\/\/photo-detector.com\/wp-content\/uploads\/2025\/10\/PDCT01-201-100x100.webp 100w' sizes='(max-width: 2560px) 100vw, 2560px' loading='fetchpriority=\"high\"' decoding='async' alt='Low Dark Current Si PIN Photodiode - 350-1060nm for Laser Detection' \/>\t\t\t\t<\/div>\n\t\t\t<\/dialog>\n\t\t<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\"><h2 class=\"wp-block-post-title\"><a href=\"https:\/\/photo-detector.com\/es\/product\/low-dark-current-si-pin-photodiode\/\" target=\"_blank\" >Si PIN Photodiode with low dark current (350-1060nm) PDCT01-201<\/a><\/h2>\n\n<div data-block-name=\"woocommerce\/product-summary\" data-is-descendent-of-single-product-block=\"true\" class=\"wp-block-woocommerce-product-summary\"><div class=\"wc-block-components-product-summary \" style=\"\">\n\t\t\t\t<p>Experience superior signal clarity with our Si PIN photodiode, engineered for ultra-low dark current and high stability. This photodiode ensures precise laser detection and optical measurements. Our low dark current Si PIN photodiode offers exceptional performance.<\/p>\n\n\t\t\t<\/div><\/div>\n\n\n<div data-block-name=\"woocommerce\/product-meta\" class=\"wp-block-woocommerce-product-meta\">\n<div class=\"wp-block-group is-nowrap is-layout-flex wp-container-core-group-is-layout-7387b849 wp-block-group-is-layout-flex\">\n\n<div class=\"taxonomy-product_tag wp-block-post-terms\"><span class=\"wp-block-post-terms__prefix\">Tag\uff1a<\/span><a href=\"https:\/\/photo-detector.com\/es\/product-tag\/high-stability-photodiode\/\" rel=\"tag\">high stability photodiode<\/a><span class=\"wp-block-post-terms__separator\">, <\/span><a href=\"https:\/\/photo-detector.com\/es\/product-tag\/laser-detection\/\" rel=\"tag\">laser detection<\/a><span class=\"wp-block-post-terms__separator\">, <\/span><a href=\"https:\/\/photo-detector.com\/es\/product-tag\/low-dark-current\/\" rel=\"tag\">Low dark current<\/a><span class=\"wp-block-post-terms__separator\">, <\/span><a href=\"https:\/\/photo-detector.com\/es\/product-tag\/optical-sensor\/\" rel=\"tag\">optical sensor<\/a><span class=\"wp-block-post-terms__separator\">, <\/span><a href=\"https:\/\/photo-detector.com\/es\/product-tag\/si-pin-photodiode\/\" rel=\"tag\">Si PIN photodiode<\/a><span class=\"wp-block-post-terms__separator\">, <\/span><a href=\"https:\/\/photo-detector.com\/es\/product-tag\/to-package\/\" rel=\"tag\">TO package<\/a><\/div><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">FAQ<\/h2>\n\n\n<div id=\"rank-math-faq\" class=\"rank-math-block\">\n<div class=\"rank-math-list \">\n<div id=\"faq-question-1777524640514\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \"><strong>Does a larger photosensitive area size always mean better sensitivity?<\/strong><\/h3>\n<div class=\"rank-math-answer \">\n\n<p>No. While a larger active area collects more photons, the accompanying increase in capacitance and dark current often degrades overall signal-to-noise ratio, especially at higher frequencies. Sometimes a smaller, better-optimized detector performs better.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1777524641337\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \"><strong>How does photosensitive area size affect response time?<\/strong><\/h3>\n<div class=\"rank-math-answer \">\n\n<p>Larger area photodiodes have significantly higher junction capacitance, which increases the RC time constant and slows response. The effect becomes particularly noticeable above 5\u20137 mm\u00b2.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1777524641927\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \"><strong>Is it worth paying more for a large area photodiode?<\/strong><\/h3>\n<div class=\"rank-math-answer \">\n\n<p>Only if your application actually needs it. If you can concentrate your light onto a smaller active area through optics, you\u2019ll usually get better speed, lower noise, and lower cost by choosing a smaller <strong>photosensitive area size<\/strong>.<\/p>\n\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">Ready to find the perfect balance for your sensor design?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Head over to our <strong><em><a href=\"https:\/\/photo-detector.com\/product-category\/si-pin-photodiodes\/\" target=\"_blank\" rel=\"noreferrer noopener\">Si PIN photodiodes<\/a><\/em><\/strong> collection or <strong><em><a href=\"https:\/\/photo-detector.com\/contact-us\/\" target=\"_blank\" rel=\"noreferrer noopener\">contact us<\/a><\/em><\/strong> directly. We\u2019ll help you pick the right active area without the usual headaches.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>If you\u2019ve ever found yourself staring at a datasheet wondering whether to pick a 1 mm\u00b2 or 10 mm\u00b2 photodiode, you\u2019re not alone. The photosensitive area size is one of those sneaky parameters that quietly controls almost everything else in your sensor\u2019s behavior. After spending the last twelve years helping clients pick the right photodiodes [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1904,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[1013,1012],"class_list":["post-1903","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-si-pin-photodiodes","tag-active-area","tag-photosensitive-area"],"_links":{"self":[{"href":"https:\/\/photo-detector.com\/es\/wp-json\/wp\/v2\/posts\/1903","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/photo-detector.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/photo-detector.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/photo-detector.com\/es\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/photo-detector.com\/es\/wp-json\/wp\/v2\/comments?post=1903"}],"version-history":[{"count":0,"href":"https:\/\/photo-detector.com\/es\/wp-json\/wp\/v2\/posts\/1903\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/photo-detector.com\/es\/wp-json\/wp\/v2\/media\/1904"}],"wp:attachment":[{"href":"https:\/\/photo-detector.com\/es\/wp-json\/wp\/v2\/media?parent=1903"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/photo-detector.com\/es\/wp-json\/wp\/v2\/categories?post=1903"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/photo-detector.com\/es\/wp-json\/wp\/v2\/tags?post=1903"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}