onsemi Digital Transistor 30 V NPN Through Hole TO-92 3-Pin BC517-D74Z

onsemi BC517-D74Z is a digital NPN bipolar Darlington transistor designed for switching applications, packaged in a TO-92 through-hole format with 3 pins. It features a maximum collector-emitter voltage of 30 volts and a high minimum DC current gain of 30000, making it suitable for efficient amplification and switching tasks in industrial and electronic designs.

The transistor is rated for a maximum power dissipation of 625 mW and can operate at temperatures up to 150°C, enabling reliable performance in demanding conditions. Its compact TO-92 package with dimensions of approximately 5.2 mm in length, 21.77 mm in height, and 4.19 mm in width fits well for medium power applications requiring space-efficient mounting.

This device supports protection roles such as ESD protection, polarity reversal protection, data line protection, and inductive load protection. It is commonly used to drive print hammer, relay, solenoid, and lamp circuits in various electronic and industrial equipment.

The transistor’s single NPN configuration and 3-pin through-hole mount provide easy integration on printed circuit boards, making it an excellent choice for switching logic designs and industrial control systems.

This transistor supports a maximum collector-emitter voltage of 30 volts. High minimum DC current gain (hFE) of 30000 ensures strong current amplification. Robust maximum power dissipation rating of 625 milliwatts. Reliable operation up to 150 degrees Celsius.

Compact TO-92 through-hole package with 3 pins facilitates easy PCB mounting. Designed for switching and protection applications including relay and solenoid driving. Suitable for use in industrial, construction, and laboratory electronic systems.

For thorough design and manufacturing needs, this transistor meets quality standards and is available in Pb-free packages, supporting environmental compliance. It is an ideal component for engineers and technicians seeking dependable digital switching transistors in demanding electronic control and signal applications.

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