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BD678A - STMicroelectronics

Description: BD678A, Darlington Transistor, PNP 4 A 60 V HFE:750, 3-Pin, SOT-32

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BD678A - STMicroelectronics - PCB symbol
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PCB Footprints
BD678A - STMicroelectronics PCB footprint - Transistor Outline, Vertical - Transistor Outline, Vertical - SOT-32(TO-126)_
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3D Models
BD678A - STMicroelectronics - 3D model - Transistor Outline, Vertical - SOT-32(TO-126)_
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BD678A Details

  • Manufacturer Part Number:

    BD678A

  • Brand Name:

    STMicroelectronics

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    SIP

  • Package Description:

    ROHS COMPLIANT 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:

    60 V

  • Configuration:

    DARLINGTON WITH BUILT-IN DIODE AND RESISTOR

  • DC Current Gain-Min (hFE):

    750

  • 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:

    40 W

  • Power Dissipation-Max (Abs):

    40 W

  • Qualification Status:

    Not Qualified

  • Surface Mount:

    NO

  • Terminal Finish:

    MATTE TIN

  • Terminal Form:

    THROUGH-HOLE

  • Terminal Position:

    SINGLE

  • Transistor Application:

    SWITCHING

  • Transistor Element Material:

    SILICON

  • Transition Frequency-Nom (fT):

    10 MHz

  • VCEsat-Max:

    2.8 V

BD678A Frequently Asked Questions (FAQs)

  • The recommended operating voltage range for the BD678A is 4.5V to 18V, with a maximum rating of 20V.
  • To ensure stable operation in high-temperature environments, it's recommended to use a heat sink and ensure good thermal conductivity between the device and the heat sink. Additionally, reduce the power dissipation by optimizing the circuit design and reducing the current consumption.
  • The maximum current rating for the BD678A is 2A, but it's recommended to operate within the 1.5A range for reliable and stable operation.
  • To protect the BD678A from overvoltage and overcurrent conditions, use a voltage regulator with overvoltage protection (OVP) and overcurrent protection (OCP) features. Additionally, consider adding a fuse or a polyfuse in series with the device to prevent damage from excessive current.
  • For optimal thermal performance, use a multi-layer PCB with a solid ground plane and a thermal relief pattern under the device. Ensure good thermal conductivity between the device and the PCB by using thermal vias and a thermal interface material (TIM).

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BD678A 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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BD678A Alternates

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Part Image BD678A Continental Device India Ltd

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Part Image BD678AS Fairchild Semiconductor Corporation

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Part Image BD678AG onsemi

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Part Image BD678ALEADFREE Central Semiconductor Corp

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Part Image BD678A Crimson Semiconductor Inc

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For a full list of alternate parts for BD678A, check out Findchips.com