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STMICROELECTRONICS BD242B Power Transistor

The BD242B is a PNP silicon power transistor designed for medium power linear and switching applications in industrial circuits. It features a TO-220 plastic package, a collector-emitter voltage of 80 V, a collector current of 3 A, and a total dissipation of 40 W at 25°C. Its high junction temperature of 150°C and low thermal resistance make it suitable for reliable operation in demanding environments. The transistor's electrical characteristics include a collector cut-off current of 0.3 mA and a gain of up to 25, ensuring efficient performance in various power control and switching tasks.

Authorized Distributors
Source:Newark
Part No:BD242B
Stock:3316
Inv Date:06-11-2026
Price: Unit price: $1.02
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Source:DigiKey
Part No:BD242B
Stock:1149
Inv Date:06-11-2026
Price: Unit price: $0.39
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Source:DigiKey
Part No:BD242B
Stock:441
Inv Date:06-11-2026
Price: Unit price: $1.88
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Part No:BD242B
Stock:962
Inv Date:06-12-2026
Price: Unit price: $1.09
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Part No:BD242B
Stock:0
Inv Date:06-12-2026
Price: N/A
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Part No:BD242B
Stock:0
Inv Date:06-12-2026
Price: N/A
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Source:Arrow EU
Part No:BD242B
Stock:9163
Inv Date:06-12-2026
Price: N/A
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STMICROELECTRONICS BD242B Power Transistor Specifications:

  • Collector-Base Voltage: 70 V (BD241A), 90 V (BD241B), 115 V (BD241C), 80 V (BD242B)
  • Collector-Emitter Voltage: 60 V (BD241A), 80 V (BD241B), 100 V (BD241C), 80 V (BD242B)
  • Emitter-Base Voltage: 5 V
  • Collector Current: 3 A
  • Collector Peak Current: 5 A
  • Base Current: 1 A
  • Total Dissipation: 40 W at Tj < 25°C
  • Storage Temperature Range: -65°C to 150°C
  • Maximum Operating Junction Temperature: 150°C
  • Thermal Resistance Junction-Case: Max 3.13 °C/W
  • Thermal Resistance Junction-Ambient: Max 62.5 °C/W
  • Collector-Emitter Saturation Voltage: 1.2 V at Ic=3A, Vce=4V
  • Base-Emitter Voltage: 1.8 V at Ic=3A, Vce=4V
  • DC Current Gain: Up to 25 at Ic=1A, Voe=4V
  • Small Signal Current Gain: 20 at Ic=0.5A, Vce=10V, f=1kHz

Buy the SGS-THOMSON BD242B – Reliable PNP Power Transistor for Industrial Applications

Get the SGS-THOMSON BD242B PNP silicon power transistor online today and experience high efficiency in your switching and linear power applications. Designed with a robust TO-220 package, it offers a collector-emitter voltage of 80 V, a collector current of 3 A, and a total power dissipation of 40 W. Its excellent thermal management and electrical characteristics ensure reliable operation in demanding industrial environments. Perfect for power control, automation, and circuit switching, this transistor guarantees optimal performance with easy online ordering.

Order your SGS-THOMSON Series BD242B power transistor today and enhance your industrial projects with dependable high-performance switching components.

Frequently Asked Questions

Where can I buy STMICROELECTRONICS BD242B?

You can click on the BUY or RFQ button to purchase BD242B from an authorized STMICROELECTRONICS distributor.

How do I troubleshoot issues or seek technical support for part BD242B?

You can download the BD242B datasheet or visit the STMICROELECTRONICS website for support.

Who is the manufacturer of BD242B?

STMICROELECTRONICS

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