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ONSEMI BD437G NPN Transistor

The BD437G is a medium power NPN epitaxial silicon transistor suitable for linear and switching applications. It offers collector-Base voltages up to 45V, collector currents of 4A, and collector dissipation of 36W. Designed as a complement to BD434, BD436, and BD438, this transistor features high current gain, low saturation voltage, and a junction temperature of 150°C. packaged in TO-126, it is ideal for use in various electronic circuits requiring reliable amplification and switching performance.

Authorized Distributors
Source:Newark
Part No:BD437G
Stock:193
Inv Date:06-10-2026
Price: Unit price: $1.52
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Source:DigiKey
Part No:BD437G
Stock:508
Inv Date:06-10-2026
Price: Unit price: $1.48
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Part No:BD437G
Stock:430
Inv Date:06-11-2026
Price: Unit price: $1.48
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Part No:BD437G
Stock:0
Inv Date:06-10-2026
Price: Unit price: $0.6007
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Part No:BD437G
Stock:0
Inv Date:06-10-2026
Price: Unit price: $0.6007
Buy/RFQ:
Part No:BD437G
Stock:0
Inv Date:06-10-2026
Price: Unit price: $0.41
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ONSEMI BD437G NPN Transistor Specifications:

  • Collector-Base Voltage: 22-45 V
  • Collector-Emitter Voltage: 22-45 V
  • Emitter-Base Voltage: 5 V
  • Collector Current (DC): 4 A
  • Collector Dissipation: 36 W
  • Junction Temperature: 150°C
  • Storage Temperature: -65 to 150°C
  • Package: TO-126
  • Maximum Power Dissipation: 36 W
  • Current Gain: 40 to 130
  • Collector Cut-off Current: 100 pA
  • Base-Emitter Voltage (on): 1.2 to 14 V
  • Collector-Base Voltage (sus): 22-45 V
  • Collector-Emitter Saturation Voltage: 0.2-0.6 V
  • Base-Emitter ON Voltage: 1.2-14 V
  • Power Derating and safe operating area data included
  • Dimensions: 8.30 mm terminal length, 1.55-1.95 mm width, and other physical specs in detailed datasheet

Buy the Buy ON Semiconductor BD437G Part Number BD437G Online

Enhance your electronic designs with the ON Semiconductor BD437G NPN transistor. Featuring 45V collector voltage, 4A current capacity, and TO-126 packaging, this high-performance transistor is ideal for switching and linear applications. Its high current gain, low saturation voltage, and robust thermal characteristics ensure long-lasting reliability in various circuits. Purchase online today to experience dependable operation, precise control, and high efficiency in your professional and hobbyist projects. Secure genuine parts, fast delivery, and expert support with every order.

Order your ON Semiconductor BD437G medium power transistor today and enhance your electronic projects with reliable switching and amplification performance.

Frequently Asked Questions

Where can I buy ONSEMI BD437G?

You can click on the BUY or RFQ button to purchase BD437G from an authorized ONSEMI distributor.

How do I troubleshoot issues or seek technical support for part BD437G?

You can download the BD437G datasheet or visit the ONSEMI website for support.

Who is the manufacturer of BD437G?

ONSEMI

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