IR Phototransistor & IR Emitter Kit – 940nm (5 Pair Pack)

Easy-to-Use Infrared Detector and Emitter Set

This convenient 5 pair pack includes 5 IR phototransistors (receivers) and 5 IR emitters, perfect for a wide range of DIY electronics and home projects. Whether you’re building an IR beam security system, proximity detector, or remote control sensor, this 940nm infrared detector and emitter kit offers an easy and affordable solution.

Versatile IR Sensing – For Hobbyists and Everyday Use

The IR phototransistor operates just like a standard transistor, but instead of a base lead, it’s activated by IR light from the matching emitter. Simply position the emitter and detector facing each other to create a reliable infrared “tripwire” or use them in automation and robotics projects to sense motion and light interruptions.

• Works great for security beams, object sensors, automatic counters, and remote control projects
• Simple to use in breadboards or custom circuits
• Standard 5mm (T1 3/4) package dimensions

Technical Specifications

IR Phototransistor (Receiver)

• Collector-Emitter Voltage: 30VDC max
• Emitter-Collector Voltage: 5VDC max
• Collector Current: 20mA max
• Collector Dark Current: 100nA max
• Collector-Emitter Saturation Voltage: 0.4V max
• Peak Sensitivity Wavelength: 940nm
• Spectral Bandwidth: 840nm – 1100nm
• Package Size: 5mm (T1 3/4)

IR Emitter (Infrared LED)

• Forward Voltage: 1.2 to 1.3VDC
• Peak Wavelength: 940nm
• Spectral Bandwidth: 840nm – 1100nm
• Package Size: 5mm (T1 3/4)

Quick Setup & Usage

• Each “pair” includes one infrared LED emitter and one IR phototransistor receiver.
• The longest lead is the emitter (for the LED); the shorter lead is the phototransistor collector.
• When the infrared beam is detected, current flows from collector to emitter.
• Compatible with standard breadboards, microcontrollers, and DIY kits.

Product ID: VUPN8020