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BUL741 - STMicroelectronics

Description: High voltage fast-switching NPN power transistors

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BUL741 - STMicroelectronics - PCB symbol
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PCB Footprints
BUL741 - STMicroelectronics PCB footprint - Transistor Outline, Vertical - Transistor Outline, Vertical - TO-220 type A_2020
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3D Models
BUL741 - STMicroelectronics - 3D model - Transistor Outline, Vertical - TO-220 type A_2020
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BUL741 Details

  • Manufacturer Part Number:

    BUL741

  • Brand Name:

    STMicroelectronics

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    TO-220AB

  • Package Description:

    ROHS COMPLIANT, TO-220, 3 PIN

  • Pin Count:

    3

  • Country Of Origin:

    Mainland China

  • ECCN Code:

    EAR99

  • Factory Lead Time:

    14 Weeks

  • Manufacturer:

    STMicroelectronics

  • YTEOL:

    4

  • Collector Current-Max (IC):

    2.5 A

  • Collector-Emitter Voltage-Max:

    400 V

  • Configuration:

    SINGLE

  • DC Current Gain-Min (hFE):

    25

  • 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 (Sn)

  • Terminal Form:

    THROUGH-HOLE

  • Terminal Position:

    SINGLE

  • Transistor Application:

    SWITCHING

  • Transistor Element Material:

    SILICON

BUL741 Frequently Asked Questions (FAQs)

  • The BUL741 can operate up to 100 kHz, but the maximum frequency depends on the specific application and layout. It's recommended to consult the application note AN4578 for more information.
  • To ensure proper biasing, follow the recommended biasing scheme in the datasheet, and make sure to decouple the supply voltage with a 10uF capacitor. Additionally, use a 1kΩ resistor in series with the base of the transistor to prevent oscillations.
  • The maximum power dissipation of the BUL741 is 2W, but it's recommended to derate the power dissipation based on the ambient temperature and the thermal resistance of the package.
  • Yes, the BUL741 can be used as a switch, but it's essential to ensure the transistor is fully saturated (Vce(sat) < 0.5V) to minimize power losses. Consult the application note AN4578 for more information on using the BUL741 as a switch.
  • To protect the BUL741 from overvoltage and ESD, use a voltage clamp or a transient voltage suppressor (TVS) diode, and follow proper PCB design and layout guidelines to minimize ESD susceptibility.

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BUL741 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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