Photo transistor 5MM PT333-3B IR receiver

The PT333-3B is a 5mm NPN silicon infrared phototransistor designed to detect 940nm infrared light emitted by IR LEDs. It offers high sensitivity, fast response time, and low power consumption, making it ideal for IR sensing, obstacle detection, encoders, optical switches, and automation projects. Unlike a TSOP1838, it is a raw IR phototransistor and does not demodulate 38kHz remote-control signals.

Product Description

The PT333-3B features a black epoxy package that filters visible light while remaining highly sensitive to infrared radiation around 940nm. Its compact 5mm through-hole package allows easy integration into PCBs and breadboards for industrial, educational, and DIY electronic applications

Features

• 5mm through-hole IR phototransistor
• High sensitivity to 940nm infrared light
• Fast response time
• Low dark current
• Black epoxy package for ambient light filtering
• Low power consumption

Specifications

• Model: PT333-3B
• Type: NPN Silicon Phototransistor
• Package: 5mm Round Through-Hole
• Peak Sensitivity Wavelength: 940nm
• Collector-Emitter Voltage (VCEO): 30V
• Collector Current (IC): 20mA (Max)
• Power Dissipation: 75mW

Pin Configuration

• Collector (C)
• Emitter (E)

Note: The PT333-3B has 2 pins only and is not polarized as + and −. The two leads are Collector and Emitter, so connect them according to your circuit schematic or datasheet

Package Includes

• 1 × PT333-3B 5mm IR Phototransistor (Infrared Receiver)