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BD678AG - onsemi

Description: Last Shipments - 4.0 A, 60 V PNP Darlington Bipolar Power Transistor

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BD678AG - onsemi - PCB symbol
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BD678AG Details

  • Manufacturer Part Number:

    BD678AG

  • Brand Name:

    onsemi

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    TO-225

  • Package Description:

    ROHS COMPLIANT, PLASTIC, CASE 77-09, 3 PIN

  • Pin Count:

    3

  • Manufacturer Package Code:

    77-09

  • ECCN Code:

    EAR99

  • Manufacturer:

    onsemi

  • YTEOL:

    0

  • 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-225AA

  • 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-Max (Abs):

    40 W

  • Qualification Status:

    Not Qualified

  • Surface Mount:

    NO

  • Terminal Finish:

    MATTE TIN

  • Terminal Form:

    THROUGH-HOLE

  • Terminal Position:

    SINGLE

  • Transistor Application:

    AMPLIFIER

  • Transistor Element Material:

    SILICON

BD678AG Frequently Asked Questions (FAQs)

  • A 2-layer or 4-layer PCB with a solid ground plane and thermal vias is recommended. Ensure a minimum of 1 oz copper thickness and a thermal relief pattern around the device.
  • Use a capacitor with an ESR ≤ 1 ohm and ensure the capacitor is placed close to the device. Add a 1-2 ohm resistor in series with the capacitor to dampen oscillations.
  • The maximum allowed voltage drop is 2.5V. Exceeding this may cause instability or failure. Ensure the input voltage is within the recommended range.
  • Yes, but ensure the device is derated according to the thermal derating curve in the datasheet. Use a heat sink or thermal interface material to maintain a safe junction temperature.
  • Use a shielded enclosure, keep the device and output capacitor close together, and add a common-mode choke or ferrite bead in series with the output. Ensure good PCB layout practices and decoupling.

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BD678AG Overview

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BD678AG Alternates

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Image Part Number Model
Part Image BD678A Continental Device India Ltd

Power Bipolar Transistor, 4A I(C), 60V V(BR)CEO, 1-Element, PNP, Silicon, TO-126, Plastic/Epoxy, 3 Pin
Part Image BD678AS Fairchild Semiconductor Corporation

Power Bipolar Transistor, 4A I(C), 60V V(BR)CEO, 1-Element, PNP, Silicon, TO-126, Plastic/Epoxy, 3 Pin
Part Image BD678A STMicroelectronics

Power Bipolar Transistor, 4A I(C), 60V V(BR)CEO, 1-Element, PNP, Silicon, TO-126, Plastic/Epoxy, 3 Pin
Part Image BD678A Crimson Semiconductor Inc

Power Bipolar Transistor, 4A I(C), 60V V(BR)CEO, 1-Element, PNP, Silicon, TO-126, Plastic/Epoxy, 3 Pin
Part Image BD678ALEADFREE Central Semiconductor Corp

Power Bipolar Transistor, 4A I(C), 60V V(BR)CEO, 1-Element, PNP, Silicon, TO-126, Plastic/Epoxy, 3 Pin
For a full list of alternate parts for BD678AG, check out Findchips.com