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ONSEMI MJF31CG Power Transistor

The MJF31C is an NPN silicon power transistor designed for general purpose amplifier and switching applications, featuring a collector-emitter saturation voltage of 1.2 V at 3.0 A, and a maximum collector-emitter sustaining voltage of 100 V. Its high current gain and bandwidth make it suitable for efficient circuit operation. The device comes in a TO-220 FULLPAK package, with UL recognition for 3500 Vrms isolation, and can handle up to 3.0 A current and 28 W power dissipation at 25°C, ensuring reliable performance in power management and switching circuits.

Authorized Distributors
Source:Newark
Part No:MJF31CG
Stock:114
Inv Date:06-10-2026
Price: Unit price: $1.91
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Source:DigiKey
Part No:MJF31CG
Stock:104
Inv Date:06-10-2026
Price: Unit price: $1.85
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Part No:MJF31CG
Stock:8
Inv Date:06-11-2026
Price: Unit price: $2.02
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Part No:MJF31CG
Stock:0
Inv Date:06-10-2026
Price: Unit price: $1.22
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Part No:MJF31CG
Stock:0
Inv Date:06-10-2026
Price: Unit price: $0.5618
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Part No:MJF31CG
Stock:0
Inv Date:06-10-2026
Price: Unit price: $0.5618
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Part No:MJF31CG
Stock:0
Inv Date:06-10-2026
Price: Unit price: $0.755
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Part No:MJF31CG
Stock:170
Inv Date:06-11-2026
Price: N/A
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ONSEMI MJF31CG Power Transistor Specifications:

  • Collector-Emitter Voltage Voeo: 100 V
  • Collector-Base Voltage Ves: 100 V
  • Emitter-Base Voltage Vee: 5.0 V
  • Collector Current Unclamped Inductive Io: 3.0 A
  • Total Power Dissipation @ Tc = 25°C: 28 W
  • Thermal Resistance, Junction-to-Ambient: 62.5 °C/W
  • Thermal Resistance, Junction-to-Case: 4.46 °C/W
  • Operating Junction Temperature Range: -65°C to +160°C
  • Package: TO-220 FULLPAK
  • Maximum Collector-Emitter Saturation Voltage: 1.2 V at 3.0 A
  • DC Current Gain (hFE): 25-50 at 1.0 A
  • Switching Bandwidth: 3.0 MHz
  • Peak Base Current: 1.0 A

Buy the Buy ON Semiconductor MJF31C Part Number MJF31CG Online

Enhance your electronic projects with the reliable ON Semiconductor MJF31C power transistor, capable of handling up to 3 A and 28 W with high gain. Its TO-220 package ensures easy mounting and heat dissipation, suitable for amplifier, switching, and power management applications. UL recognized for 3500 Vrms isolation, this transistor provides dependable performance in circuits requiring efficient power control and amplification. Purchase online today to benefit from fast delivery and genuine quality for your professional or hobbyist projects.

Order your ON Semiconductor Series MJF31C power transistor today and ensure your switching and amplifier projects operate with dependable high-performance reliability.

Frequently Asked Questions

Where can I buy ONSEMI MJF31CG?

You can click on the BUY or RFQ button to purchase MJF31CG from an authorized ONSEMI distributor.

How do I troubleshoot issues or seek technical support for part MJF31CG?

You can download the MJF31CG datasheet or visit the ONSEMI website for support.

Who is the manufacturer of MJF31CG?

ONSEMI

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