Bourns Inc.
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BD239B-S
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BD239B-S

Product Overview

Category: Semiconductor
Use: Power transistor for general-purpose amplifier and switching applications
Characteristics: High current capability, low collector-emitter saturation voltage
Package: TO-220AB
Essence: NPN silicon epitaxial planar transistor
Packaging/Quantity: Bulk packaging, 50 pieces per tube

Specifications

  • Collector-Emitter Voltage: 100V
  • Collector Current: 2A
  • Total Power Dissipation: 25W
  • Transition Frequency: 3MHz
  • Operating Temperature Range: -65°C to +150°C

Detailed Pin Configuration

  1. Base (B)
  2. Collector (C)
  3. Emitter (E)

Functional Features

  • High current gain
  • Low noise
  • Complementary PNP type available (BD240B-S)

Advantages and Disadvantages

Advantages: - High current capability - Low collector-emitter saturation voltage - Complementary PNP type available

Disadvantages: - Limited power dissipation - Moderate transition frequency

Working Principles

The BD239B-S operates as a typical NPN transistor, amplifying current flow from the base to the collector in response to small changes in base current.

Detailed Application Field Plans

The BD239B-S is suitable for use in audio amplifiers, power supply circuits, and general switching applications due to its high current capability and low saturation voltage.

Detailed and Complete Alternative Models

  • BD237B-S: Lower collector-emitter voltage, lower current capability
  • BD238B-S: Higher collector current, higher power dissipation

In conclusion, the BD239B-S is a versatile power transistor with high current capability and low saturation voltage, making it suitable for a wide range of general-purpose amplifier and switching applications.

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10 domande e risposte comuni relative all'applicazione di BD239B-S nelle soluzioni tecniche

  1. What is BD239B-S?

    • BD239B-S is a high-voltage, high-current NPN power transistor used in various technical solutions.

  2. What are the key specifications of BD239B-S?

    • The key specifications include a collector-emitter voltage of 80V, collector current of 4A, and a total power dissipation of 40W.

  3. In what technical applications can BD239B-S be used?

    • BD239B-S is commonly used in audio amplifiers, power supply circuits, motor control circuits, and general switching applications.

  4. What are the recommended operating conditions for BD239B-S?

    • The recommended operating conditions include a maximum junction temperature of 150°C, a storage temperature range of -65°C to 150°C, and a maximum soldering temperature of 260°C.

  5. How should BD239B-S be mounted for optimal performance?

    • BD239B-S should be mounted on a suitable heat sink to ensure proper heat dissipation and maintain its performance within safe operating temperatures.

  6. What are the typical thermal characteristics of BD239B-S?

    • The typical thermal resistance from junction to case (RθJC) is 3.125°C/W, and from junction to ambient (RθJA) is 62.5°C/W.

  7. Can BD239B-S be used in automotive applications?

    • Yes, BD239B-S can be used in automotive applications, provided it meets the specific requirements and standards for automotive electronic components.

  8. Are there any recommended complementary transistors to use with BD239B-S?

    • Complementary transistors such as BD240B-S (PNP) can be used in conjunction with BD239B-S in various amplifier and switching applications.

  9. What are the typical gain and frequency characteristics of BD239B-S?

    • The typical DC current gain (hFE) is 15-60 at IC = 0.5A, and the transition frequency (fT) is 30MHz.

  10. Where can I find detailed application notes and circuit examples for using BD239B-S?

    • Detailed application notes and circuit examples for BD239B-S can be found in the manufacturer's datasheet and application guides, as well as in relevant technical literature and online resources.