2N5777 Phototransistor Sensor 50mA 30V (NPN Light Sensor Phototransistor)

The 2N5777 Phototransistor Sensor is a light-sensitive semiconductor device designed to detect optical signals and convert them into electrical current. Operating as an NPN phototransistor, it uses incident light to control the collector current, eliminating the need for an electrical base drive. This provides high sensitivity, fast switching speed, and reliable performance for optical sensing applications. With a maximum collector current of 50mA and a collector-emitter voltage rating of 30V, the 2N5777 is suitable for optical switches, object detection, encoder systems, industrial automation, embedded electronics, and light sensing circuits.

Key Features -

• NPN phototransistor for light detection

• High sensitivity to incident light

• Maximum collector current of 50mA

• Collector-emitter voltage up to 30V

• Fast switching response

• Low noise operation

• Compact through-hole package

• Reliable and stable performance

• Easy PCB integration

• Suitable for industrial and embedded applications

Specifications -

• Product type - Phototransistor

• Model - 2N5777

• Transistor type - NPN Phototransistor

• Maximum collector current (IC) - 50mA

• Collector-emitter voltage (VCEO) - 30V Maximum

• Output type - Light-Controlled Current Output

• Operating mode - Optical Switching

• Response time - Fast Switching

• Mounting type - Through Hole

• Package type - Standard Phototransistor Package

Applications -

• Optical sensing systems

• Light detection circuits

• Object detection

• Optical switches

• Encoder systems

• Industrial automation

• Embedded electronics

• DIY electronics projects