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BU406 - onsemi

Description: Obsolete - NPN Bipolar Power Transistor

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Symbol
BU406 - onsemi - PCB symbol
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PCB Footprints
BU406 - onsemi PCB footprint - Transistor Outline, Vertical - Transistor Outline, Vertical - TO-220 CASE 221A-09 ISSUE AH
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3D Models
BU406 - onsemi - 3D model - Transistor Outline, Vertical - TO-220 CASE 221A-09 ISSUE AH
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BU406 Details

  • Manufacturer Part Number:

    BU406

  • Brand Name:

    onsemi

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    TO-220-3

  • Package Description:

    CASE 221A-09, 3 PIN

  • Pin Count:

    3

  • Manufacturer Package Code:

    340AT

  • ECCN Code:

    EAR99

  • Manufacturer:

    onsemi

  • YTEOL:

    0

  • Additional Feature:

    LEADFORM OPTIONS ARE AVAILABLE

  • Case Connection:

    COLLECTOR

  • Collector Current-Max (IC):

    7 A

  • Collector-Emitter Voltage-Max:

    200 V

  • Configuration:

    SINGLE

  • DC Current Gain-Min (hFE):

    10

  • JEDEC-95 Code:

    TO-220AB

  • 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:

    NPN

  • Power Dissipation-Max (Abs):

    60 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

BU406 Frequently Asked Questions (FAQs)

  • The recommended operating voltage range for the BU406 is 10V to 30V, although it can tolerate up to 40V for short periods.
  • To ensure proper biasing, connect the base of the transistor to a voltage divider network that provides a stable voltage reference, and ensure the collector-emitter voltage is within the recommended range.
  • The maximum current rating for the BU406 is 3A, but it's recommended to derate the current to 2A for continuous operation to ensure reliability and prevent overheating.
  • To prevent thermal runaway, ensure proper heat sinking, keep the junction temperature below 150°C, and avoid operating the transistor at high currents and voltages simultaneously.
  • While the BU406 can be used as a switch, it's not recommended for high-frequency applications due to its relatively slow switching times (around 10μs). Consider using a faster transistor or a dedicated high-frequency switch for such applications.

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BU406 Overview

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BU406 Alternates

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Image Part Number Model
Part Image BU406G Rochester Electronics LLC

7A, 200V, NPN, Si, POWER TRANSISTOR, TO-220AB, ROHS COMPLIANT, CASE 221A-09, 3 PIN
Part Image BU406 Samsung Semiconductor

Power Bipolar Transistor, 7A I(C), 200V V(BR)CEO, 1-Element, NPN, Silicon, TO-220AB, Plastic/Epoxy, 3 Pin
Part Image BU406TU Fairchild Semiconductor Corporation

Power Bipolar Transistor, 7A I(C), 200V V(BR)CEO, 1-Element, NPN, Silicon, TO-220AB, Plastic/Epoxy, 3 Pin
Part Image BU406TU onsemi

Power Bipolar Transistor, 7A I(C), 200V V(BR)CEO, 1-Element, NPN, Silicon, TO-220AB, Plastic/Epoxy, 3 Pin
Part Image BU406 STMicroelectronics

Power Bipolar Transistor, 7A I(C), 200V V(BR)CEO, 1-Element, NPN, Silicon, TO-220AB, Plastic/Epoxy, 3 Pin
For a full list of alternate parts for BU406, check out Findchips.com