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ONSEMI KSP44BU High-Voltage NPN Transistor

The KSP44BU is a high-voltage NPN epitaxial silicon transistor designed for use in high-voltage switching and amplification applications. Featuring a collector-emitter voltage of 400 V and a collector-base voltage of 500 V, it operates efficiently in circuits requiring robust voltage handling. Encased in a TO-92 package, it offers reliable performance with collector current up to 300 mA, junction temperature of 150°C, and power dissipation of 625 mW. Ideal for switching and high-voltage amplification in various electronic systems, this transistor ensures durability and consistent operation under demanding conditions.

Authorized Distributors
Source:Newark
Part No:KSP44BU
Stock:34
Inv Date:06-10-2026
Price: Unit price: $0.028
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Source:DigiKey
Part No:KSP44BU
Stock:7916
Inv Date:06-10-2026
Price: Unit price: $0.58
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Part No:KSP44BU
Stock:8905
Inv Date:06-11-2026
Price: Unit price: $0.58
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Part No:KSP44BU
Stock:9750
Inv Date:06-10-2026
Price: Unit price: $0.0905
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Part No:KSP44BU
Stock:9750
Inv Date:06-10-2026
Price: Unit price: $0.0905
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Part No:KSP44BU
Stock:0
Inv Date:06-10-2026
Price: Unit price: $0.151
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Source:Arrow EU
Part No:KSP44BU
Stock:2497
Inv Date:06-11-2026
Price: N/A
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ONSEMI KSP44BU High-Voltage NPN Transistor Specifications:

  • Collector-Base Voltage: 500 V
  • Collector-Emitter Voltage: 400 V
  • Emitter-Base Voltage: 6 V
  • Collector Current: 300 mA
  • Junction Temperature: 150°C
  • Storage Temperature: -55°C to 150°C
  • Power Dissipation: 625 mW at 25°C
  • Power Dissipation (Max): 1.5 W at 25°C
  • Thermal Resistance, Junction-to-Case: 83.3°C/W
  • Thermal Resistance, Junction-to-Ambient: 200°C/W
  • Package: TO-92
  • Package Type: Straight Lead, Bent Lead
  • Operating Temperature Range: -55°C to 150°C

Buy the Fairchild Series High-Voltage Transistor: KSP44

Purchase the Fairchild KSP44BU high-voltage NPN transistor online today and ensure your electronic projects and high-voltage switching systems operate with maximum reliability. This robust component offers a collector-emitter voltage of 400 V, collector current up to 300 mA, and excellent thermal stability in a TO-92 package. Ideal for power amplifiers, switching circuits, and high-voltage applications, it guarantees consistent performance. Order now to benefit from fast delivery and genuine, certified components suitable for demanding industrial and electronic systems.

Buy Fairchild KSP44BU high-voltage transistor now and experience unmatched reliability and performance in demanding electronic applications.

Frequently Asked Questions

Where can I buy ONSEMI KSP44BU?

You can click on the BUY or RFQ button to purchase KSP44BU from an authorized ONSEMI distributor.

How do I troubleshoot issues or seek technical support for part KSP44BU?

You can download the KSP44BU datasheet or visit the ONSEMI website for support.

Who is the manufacturer of KSP44BU?

ONSEMI

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