TCST1103 Transmissive Optical Sensor – Phototransistor Output – Vishay

The TCST1103 from Vishay Semiconductor Opto Division is a high-performance transmissive (through-beam) optical sensor designed for precise object detection in automation, counting, and encoding systems. Featuring a compact slotted design, it integrates an infrared emitter and a phototransistor detector in a single through-hole package for accurate and reliable optical switching.

With a 3.1 mm slot width and a 1 mm aperture, the TCST1103 provides excellent optical isolation and fast switching characteristics—achieving 10 µs turn-on and 8 µs turn-off times. The integrated daylight blocking filter ensures stable operation even in environments with ambient light.

Engineered for durability, it supports a wide operating temperature range from –55°C to +85°C, making it suitable for industrial, consumer, and commercial applications. Common uses include optical limit switches, speed encoders, rotation sensors, paper detection, and other motion or position-sensing systems.

Key Specifications:

• Manufacturer: Vishay Semiconductor (Opto Division)

• Part Number: TCST1103

• Type: Transmissive (slotted) optical interrupter

• Output Type: Phototransistor

• Slot Width: 3.1 mm

• Aperture Width: 1 mm

• Collector-Emitter Voltage (Max): 70V

• Forward LED Current (Max): 60mA

• Max Collector Current: 4mA

• Response Time: 10 µs (on), 8 µs (off)

• Operating Temperature: –55°C to +85°C

• Features: Daylight blocking filter, Pb-free, through-hole package

Package Includes:
1 x TCST1103 Transmissive Optical Sensor

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