L14G3 Phototransistor Photo transistor FAIRCHILD SEMICONDUCTORS L14G3

Product Overview

The L14G3 is a high-sensitivity silicon NPN phototransistor housed in a hermetically sealed TO-18 package with a glass lens. As the most sensitive variant in the L14G family, it offers a higher on-state collector current for a given light intensity compared to its counterparts. The integrated optical lens provides a narrow acceptance angle, making the device highly directional and effective at minimizing optical crosstalk from ambient light. It is commonly used in industrial automation, optical switches, object counters, encoders, and precision infrared light beam detection systems.

Core Specifications

• Manufacturer: Fairchild Semiconductor

• Package Type: TO-18 (Through-Hole Metal Can with Glass Lens)

• Component Type: NPN Silicon Phototransistor

• Maximum Collector-Emitter Voltage ($V_{CEO}$): 45V

• Maximum Emitter-Base Voltage ($V_{EBO}$): 5V

• On-State Collector Current ($I_{C(ON)}$): 2.0mA (Minimum at 0.5 mW/cm²)

• Power Dissipation ($P_D$): 300mW (at $T_A = 25^\circ C$)

• Reception Angle (Half-Width): ±10° (Narrow angular response)

• Marking Code: L14G3

• Part Number: L14G3