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BD436 - STMicroelectronics

Description: Complementary silicon power transistors PNP SOT-32 , 22V ~ 45V , 36W , -65C to +150C

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BD436 - STMicroelectronics - PCB symbol
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PCB Footprints
BD436 - STMicroelectronics PCB footprint - Other - Other - SOT-32 (TO-126)_2025-1.2
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3D Models
BD436 - STMicroelectronics - 3D model - Other - SOT-32 (TO-126)_2025-1.2
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BD436 Details

  • Manufacturer Part Number:

    BD436

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    SIP

  • Package Description:

    PLASTIC PACKAGE-3

  • Pin Count:

    3

  • ECCN Code:

    EAR99

  • HTS Code:

    8541.29.00.95

  • Manufacturer:

    STMicroelectronics

  • YTEOL:

    0

  • Case Connection:

    ISOLATED

  • Collector Current-Max (IC):

    4 A

  • Collector-Emitter Voltage-Max:

    32 V

  • Configuration:

    SINGLE

  • DC Current Gain-Min (hFE):

    50

  • JEDEC-95 Code:

    TO-126

  • JESD-30 Code:

    R-PSFM-T3

  • JESD-609 Code:

    e3

  • Number of Elements:

    1

  • Number of Terminals:

    3

  • Operating Temperature-Max:

    150 °C

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Shape:

    RECTANGULAR

  • Package Style:

    FLANGE MOUNT

  • Polarity/Channel Type:

    PNP

  • Power Dissipation Ambient-Max:

    36 W

  • Power Dissipation-Max (Abs):

    36 W

  • Qualification Status:

    Not Qualified

  • Surface Mount:

    NO

  • Terminal Finish:

    Matte Tin (Sn)

  • Terminal Form:

    THROUGH-HOLE

  • Terminal Position:

    SINGLE

  • Transistor Application:

    SWITCHING

  • Transistor Element Material:

    SILICON

  • Transition Frequency-Nom (fT):

    3 MHz

  • VCEsat-Max:

    0.5 V

BD436 Frequently Asked Questions (FAQs)

  • A 2-layer or 4-layer PCB with a solid ground plane and a thermal relief pattern around the device is recommended. The thermal pad should be connected to a large copper area to dissipate heat efficiently.
  • Choose an input capacitor with a low ESR (Equivalent Series Resistance) and a high ripple current rating. A 10uF to 22uF ceramic capacitor with an X7R or X5R dielectric is a good starting point.
  • The BD436 can deliver up to 3A of output current, but this may vary depending on the input voltage, output voltage, and thermal conditions. Always check the thermal derating curves in the datasheet to ensure safe operation.
  • The BD436 has a built-in overcurrent protection feature. Connect a resistor (Rocp) between the OCP pin and GND to set the overcurrent threshold. The device will limit the output current to the set threshold during an overcurrent event.
  • The BD436 is rated for operation up to 125°C, but the device's performance and reliability may degrade at high temperatures. Ensure proper thermal design and consider derating the output current to ensure safe operation.

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BD436 Overview

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About STMicroelectronics

STMicroelectronics (ST) is a global semiconductor company that designs, manufactures, and markets a broad range of integrated circuits (ICs), discrete devices, and other electronic components. STMicroelectronics offers a diverse portfolio of semiconductor products covering a wide range of applications and industries. Their product categories include microcontrollers, analog and mixed-signal ICs, MEMS (Micro-Electro-Mechanical Systems) sensors, power management ICs, RF (Radio Frequency) transceivers, aut

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BD436 Alternates

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Image Part Number Model
Part Image BD436 Continental Device India Ltd

Power Bipolar Transistor, 4A I(C), 32V V(BR)CEO, 1-Element, PNP, Silicon, TO-126, Plastic/Epoxy, 3 Pin
Part Image BD436T Rochester Electronics LLC

4A, 32V, PNP, Si, POWER TRANSISTOR, TO-225AA, PLASTIC, CASE 77-09, 3 PIN
Part Image BD436S Fairchild Semiconductor Corporation

Power Bipolar Transistor, 4A I(C), 32V V(BR)CEO, 1-Element, PNP, Silicon, TO-126, Plastic/Epoxy, 3 Pin
Part Image BD436LEADFREE Central Semiconductor Corp

Power Bipolar Transistor, 4A I(C), 32V V(BR)CEO, 1-Element, PNP, Silicon, TO-126, Plastic/Epoxy, 3 Pin
Part Image BD436 Samsung Semiconductor

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For a full list of alternate parts for BD436, check out Findchips.com