NJL7502L Photo Transistor

NJL7502L Photo Transistor

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The NJL7502L Photo Transistor is a high-sensitivity light-detecting semiconductor device designed to respond to infrared and visible light. When exposed to light, it allows current to flow between collector and emitter, making it ideal for light sensing, object detection, and optical switching applications.

It can be easily interfaced with Arduino, ESP32, ESP8266, and other microcontrollers using a simple resistor circuit to read analog or digital light changes.

🔹 Key Features

• High sensitivity to light and infrared

• Fast response time

• Compact through-hole package

• Low power consumption

• Easy integration with microcontrollers

🔹 Applications

• Light detection systems

• Optical switches

• Object detection

• IR communication circuits

• DIY electronics & Arduino projects