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ONSEMI FJT44TF High-Voltage NPN Transistor

The FJT44 high-voltage NPN epitaxial silicon transistor features a robust SOT-223 package, with collector voltages up to 500V and collector current ratings of 300mA. Designed for high-voltage switching applications, it offers excellent thermal performance with a power dissipation of 2W and a low thermal resistance of 62.5°C/W junction-to-ambient. It includes key electrical parameters such as breakdown voltages, saturation voltages, and DC current gain, making it suitable for power regulation, high-voltage amplification, and pulsed switching in industrial and electronic equipment. Its reliable specifications ensure durability in demanding environments.

Authorized Distributors
Source:DigiKey
Part No:FJT44TF
Stock:4000
Inv Date:06-10-2026
Price: Unit price: $0.39
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Source:DigiKey
Part No:FJT44TF
Stock:0
Inv Date:06-10-2026
Price: Unit price: $0.89
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Source:DigiKey
Part No:FJT44TF
Stock:47238
Inv Date:06-10-2026
Price: Unit price: $0.52
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Part No:FJT44TF
Stock:217
Inv Date:06-11-2026
Price: Unit price: $1.09
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ONSEMI FJT44TF High-Voltage NPN Transistor Specifications:

  • Package: SOT-223
  • Collector-Base Voltage: 500 V
  • Collector-Emitter Voltage: 400 V
  • Emitter-Base Voltage: 6 V
  • Collector Current: 300 mA
  • Power Dissipation: 2 W
  • Thermal Resistance: 62.5 °C/W junction-to-ambient
  • Junction Temperature: 150°C
  • Storage Temperature Range: -55°C to +150°C
  • Collector-Base Breakdown Voltage: 500 V
  • Collector-Emitter Breakdown Voltage: 400 V
  • Emitter-Base Breakdown Voltage: 6 V
  • Maximum Junction Temperature: 150°C
  • Derate Above 25°C: 16 mW/°C
  • Voltage Ratings: VcBo 500 V, VoEO 400 V
  • Collector Current: 300 mA

Buy the ON Semiconductor FJT44 – Reliable High-Voltage Transistor for Industrial Applications

Purchase the ON Semiconductor FJT44 high-voltage NPN transistor online today to ensure robust performance in demanding applications. With a collector-Base voltage of 500V and collector current of 300mA, it is ideal for high-voltage switching, power regulation, and amplification in industrial electronics. Its excellent thermal characteristics include a power dissipation of 2W and low thermal resistance, ensuring durability under extreme conditions. Reliable and efficient, this transistor is essential for power circuits requiring high voltage stability and quality fabrication for long-term operation.

Order your ON Semiconductor FJT44 high-voltage transistor today and enhance your industrial power switching and high-voltage circuitry with dependable quality.

Frequently Asked Questions

Where can I buy ONSEMI FJT44TF?

You can click on the BUY or RFQ button to purchase FJT44TF from an authorized ONSEMI distributor.

How do I troubleshoot issues or seek technical support for part FJT44TF?

You can download the FJT44TF datasheet or visit the ONSEMI website for support.

Who is the manufacturer of FJT44TF?

ONSEMI

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