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ONSEMI BC517D74Z High Gain Darlington Transistor

The BC517D74Z is a high current gain NPN Darlington transistor designed for applications requiring extremely high current amplification up to 1.0 A. It features a TO-92 package with both straight and bent lead options, making it ideal for signal switching and amplification in various electronic circuits. With a collector-emitter voltage of 30 V, collector-base voltage of 40 V, and emitter-base voltage of 10 V, it operates reliably within a temperature range of -55°C to +150°C. Thermal resistance and power dissipation ratings ensure effective heat management for high-performance applications. Suitable for high-gain, low-saturation voltage switching, it is widely used in solid-state switching circuits.

Authorized Distributors
Source:Newark
Part No:BC517-D74Z
Stock:2604
Inv Date:06-10-2026
Price: Unit price: $0.497
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Source:DigiKey
Part No:BC517-D74Z
Stock:2000
Inv Date:06-10-2026
Price: Unit price: $0.11081
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Part No:BC517-D74Z
Stock:12335
Inv Date:06-11-2026
Price: Unit price: $0.5
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Part No:BC517-D74Z
Stock:0
Inv Date:06-10-2026
Price: Unit price: $0.107
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Source:Arrow EU
Part No:BC517-D74Z
Stock:6000
Inv Date:06-11-2026
Price: N/A
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Part No:BC517-D74Z
Stock:273
Inv Date:06-11-2026
Price: N/A
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ONSEMI BC517D74Z High Gain Darlington Transistor Specifications:

  • Collector-Emitter Voltage: 30 V
  • Collector-Base Voltage: 40 V
  • Emitter-Base Voltage: 10 V
  • Collector Current - Continuous: 1.2 A
  • Operating and Storage Junction Temperature Range: -55°C to +150°C
  • Total Device Dissipation: 625 mW
  • Thermal Resistance Junction-to-Case: 83.3 °C/W
  • Thermal Resistance Junction-to-Ambient: 200 °C/W
  • Power Dissipation at 25°C: 625 mW
  • Package: TO-92 with Bent Lead

Buy the Buy ON Semiconductor BC517D74Z Part Number BC517D74Z Online

Order the ON Semiconductor BC517D74Z online now to ensure high current amplification and dependable switching performance. This Darlington transistor is ideal for signal processing, switching, and amplification in various electronic circuits. With a maximum collector current of 1.2 A and voltages up to 40 V, it offers excellent reliability within a temperature range of -55°C to +150°C. Its TO-92 package makes it suitable for compact designs. Purchase today for fast delivery and maximize your project's efficiency with this high-performance transistor, designed for precise electronic applications.

Get ON Semiconductor BC517D74Z today—built for high current gain and reliable switching in compact TO-92 packages.

Frequently Asked Questions

Where can I buy ONSEMI BC517D74Z?

You can click on the BUY or RFQ button to purchase BC517D74Z from an authorized ONSEMI distributor.

How do I troubleshoot issues or seek technical support for part BC517D74Z?

You can download the BC517D74Z datasheet or visit the ONSEMI website for support.

Who is the manufacturer of BC517D74Z?

ONSEMI

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