{"id":34953,"date":"2026-08-19T18:08:35","date_gmt":"2026-08-19T15:08:35","guid":{"rendered":"https:\/\/qariya.net\/?post_type=product&#038;p=34953"},"modified":"2026-08-22T18:16:10","modified_gmt":"2026-08-22T15:16:10","slug":"tcst2103-large-u%e2%80%91shaped-optical-sensor-slot-encoder-module","status":"publish","type":"product","link":"https:\/\/qariya.net\/en\/product\/tcst2103-large-u%e2%80%91shaped-optical-sensor-slot-encoder-module\/","title":{"rendered":"TCST2103 Large U\u2011Shaped Optical Sensor \u2013 Slot Encoder Module"},"content":{"rendered":"<h1>TCST2103 Large U-Shaped Optical Sensor \u2013 Slot Encoder Module<\/h1>\n<h2>Product Description<\/h2>\n<p>The <strong>TCST2103<\/strong> is a transmissive optical sensor featuring an infrared emitter and a phototransistor positioned opposite each other inside a U-shaped slotted housing. When an object passes through the slot, it interrupts the infrared beam, allowing the sensor to detect movement or the presence of an object.<\/p>\n<p>This makes the TCST2103 particularly suitable for <strong>optical switching, pulse counting, position detection, and encoder applications<\/strong>. The sensor is manufactured by <strong>Vishay<\/strong> and uses a 950nm infrared emitter with a phototransistor output.<\/p>\n<h2>Key Features<\/h2>\n<ul>\n<li>U-shaped transmissive optical sensor.<\/li>\n<li>Integrated infrared emitter and phototransistor.<\/li>\n<li>Infrared wavelength: 950nm.<\/li>\n<li>Slot gap: 3.1mm.<\/li>\n<li>Aperture width: 1mm.<\/li>\n<li>Phototransistor output.<\/li>\n<li>Built-in daylight-blocking filter.<\/li>\n<li>Suitable for optical switching and pulse counting.<\/li>\n<li>Suitable for encoder and position-detection applications.<\/li>\n<li>Through-hole leaded package.<\/li>\n<\/ul>\n<h2>Technical Specifications<\/h2>\n<table>\n<thead>\n<tr>\n<th>Specification<\/th>\n<th>Details<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Model<\/td>\n<td>TCST2103<\/td>\n<\/tr>\n<tr>\n<td>Sensor Type<\/td>\n<td>Transmissive Optical Sensor<\/td>\n<\/tr>\n<tr>\n<td>Detection Method<\/td>\n<td>Through-Beam<\/td>\n<\/tr>\n<tr>\n<td>Output Type<\/td>\n<td>Phototransistor<\/td>\n<\/tr>\n<tr>\n<td>IR Wavelength<\/td>\n<td>950nm<\/td>\n<\/tr>\n<tr>\n<td>Slot Gap<\/td>\n<td>3.1mm<\/td>\n<\/tr>\n<tr>\n<td>Aperture Width<\/td>\n<td>1mm<\/td>\n<\/tr>\n<tr>\n<td>Dimensions<\/td>\n<td>24.5 \u00d7 6.3 \u00d7 10.8mm<\/td>\n<\/tr>\n<tr>\n<td>Maximum Collector-Emitter Voltage<\/td>\n<td>70V<\/td>\n<\/tr>\n<tr>\n<td>Operating Temperature<\/td>\n<td>-55\u00b0C to +85\u00b0C<\/td>\n<\/tr>\n<tr>\n<td>Mounting<\/td>\n<td>Through-Hole<\/td>\n<\/tr>\n<tr>\n<td>Package<\/td>\n<td>Slotted Module, 4-Lead Dual Row<\/td>\n<\/tr>\n<tr>\n<td>Typical Output Current<\/td>\n<td>4mA<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>The key dimensions and electrical characteristics above are based on the manufacturer&#8217;s documentation and distributor specifications. (<a title=\"TCST2103, TCST2202, TCST2300\" href=\"https:\/\/www.vishay.com\/docs\/81147\/tcst2103.pdf?utm_source=chatgpt.com\">vishay.com<\/a>)<\/p>\n<h2>Applications<\/h2>\n<ul>\n<li>Optical encoders.<\/li>\n<li>Pulse and rotation counting.<\/li>\n<li>Position detection.<\/li>\n<li>Optical switches.<\/li>\n<li>Photo-interrupter applications.<\/li>\n<li>Object detection.<\/li>\n<li>Motor speed measurement.<\/li>\n<li>Mechanical movement detection.<\/li>\n<li>Electronic and automation projects.<\/li>\n<\/ul>\n<h2>How It Works<\/h2>\n<p>The TCST2103 contains an <strong>infrared LED and phototransistor facing each other<\/strong> across the sensor&#8217;s slot. When a rotating encoder disk, mechanical tab, or other object passes through the slot, it interrupts the infrared beam. The resulting change at the phototransistor output can be used by a microcontroller or electronic circuit to detect movement, count pulses, or determine rotational position.<\/p>\n<h2>Important Note<\/h2>\n<p>The TCST2103 is the <strong>sensor component itself<\/strong>, not a complete Arduino-style sensor module with signal-conditioning electronics. Additional circuitry may be required to interface its phototransistor output directly with a microcontroller, depending on the application.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>TCST2103 Large U-Shaped Optical Sensor \u2013 Slot Encoder Module Product Description The TCST2103 is a transmissive optical sensor featuring an infrared emitter and a phototransistor positioned opposite each other inside a U-shaped slotted housing. When an object passes through the slot, it interrupts the infrared beam, allowing the sensor to detect movement or the presence [&hellip;]\n","protected":false},"featured_media":34954,"template":"","meta":[],"product_cat":[210,166],"product_tag":[],"_links":{"self":[{"href":"https:\/\/qariya.net\/en\/wp-json\/wp\/v2\/product\/34953"}],"collection":[{"href":"https:\/\/qariya.net\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/qariya.net\/en\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/qariya.net\/en\/wp-json\/wp\/v2\/media\/34954"}],"wp:attachment":[{"href":"https:\/\/qariya.net\/en\/wp-json\/wp\/v2\/media?parent=34953"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/qariya.net\/en\/wp-json\/wp\/v2\/product_cat?post=34953"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/qariya.net\/en\/wp-json\/wp\/v2\/product_tag?post=34953"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}