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BD140 - STMicroelectronics

Description: BD140, PNP Bipolar Transistor, 3 A 80 V HFE:25 Power, 3-Pin SOT-32

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BD140 - STMicroelectronics - PCB symbol
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PCB Footprints
BD140 - STMicroelectronics PCB footprint - Transistor Outline, Vertical - Transistor Outline, Vertical - sot-32-ren1
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3D Models
BD140 - STMicroelectronics - 3D model - Transistor Outline, Vertical - sot-32-ren1
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BD140 Details

  • Manufacturer Part Number:

    BD140

  • Brand Name:

    STMicroelectronics

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Country Of Origin:

    India

  • ECCN Code:

    EAR99

  • HTS Code:

    8541.29.00.75

  • Factory Lead Time:

    14 Weeks

  • Manufacturer:

    STMicroelectronics

  • YTEOL:

    9

  • Case Connection:

    ISOLATED

  • Collector Current-Max (IC):

    1.5 A

  • Collector-Emitter Voltage-Max:

    80 V

  • Configuration:

    SINGLE

  • DC Current Gain-Min (hFE):

    25

  • 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:

    12.5 W

  • Power Dissipation-Max (Abs):

    8 W

  • Qualification Status:

    Not Qualified

  • Surface Mount:

    NO

  • Terminal Finish:

    Matte Tin (Sn) - annealed

  • Terminal Form:

    THROUGH-HOLE

  • Terminal Position:

    SINGLE

  • Transistor Application:

    AMPLIFIER

  • Transistor Element Material:

    SILICON

  • Transition Frequency-Nom (fT):

    75 MHz

  • VCEsat-Max:

    0.5 V

BD140 Frequently Asked Questions (FAQs)

  • The maximum SOA for the BD140 is not explicitly stated in the datasheet, but it can be estimated based on the transistor's thermal resistance and maximum junction temperature. As a general rule, it's recommended to keep the transistor within the SOA to prevent thermal runaway and ensure reliable operation.
  • To ensure the BD140 is properly biased for linear operation, you should ensure that the base-emitter voltage (VBE) is around 0.7V, and the collector-emitter voltage (VCE) is at least 1V. Additionally, the base current should be limited to prevent saturation, and the collector current should be within the recommended range.
  • The recommended heatsink for the BD140 depends on the specific application and power dissipation requirements. However, as a general rule, a heatsink with a thermal resistance of around 10-20°C/W is recommended. You can use a standard TO-220 heatsink or a custom-designed heatsink depending on your specific requirements.
  • Yes, the BD140 can be used as a switch, but it's not recommended due to its relatively slow switching speed and limited current handling capability. If you need to use the BD140 as a switch, ensure that the switching frequency is low (e.g., <10kHz), and the current is within the recommended range. Additionally, consider using a faster switching transistor or a dedicated switch transistor for high-frequency applications.
  • To protect the BD140 from overvoltage and overcurrent, you can use a combination of voltage regulators, zener diodes, and current-limiting resistors. Additionally, consider using a fuse or a polyfuse to protect against overcurrent conditions. It's also essential to ensure that the transistor is properly biased and operated within its recommended specifications.

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BD140 Overview

Use the download button to access the BD140 schematic symbol, PCB footprint, and 3D model.
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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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BD140 Alternates

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Image Part Number Model
Part Image BD140 Continental Device India Ltd

Power Bipolar Transistor, 1.5A I(C), 80V V(BR)CEO, 1-Element, PNP, Silicon, TO-126, Plastic/Epoxy, 3 Pin
Part Image BD140 Fairchild Semiconductor Corporation

Power Bipolar Transistor, 1.5A I(C), 80V V(BR)CEO, 1-Element, PNP, Silicon, TO-126, Plastic/Epoxy, 3 Pin
Part Image BD140 Baneasa SA

Power Bipolar Transistor, 1A I(C), 1-Element, PNP, Silicon, TO-126, Plastic/Epoxy, 3 Pin
Part Image BD140 Samsung Semiconductor

Power Bipolar Transistor, 1.5A I(C), 80V V(BR)CEO, 1-Element, PNP, Silicon, TO-126, Plastic/Epoxy, 3 Pin
Part Image BD140 KEC

Power Bipolar Transistor, 1.5A I(C), 80V V(BR)CEO, 1-Element, PNP, Silicon, TO-126, Plastic/Epoxy, 3 Pin
For a full list of alternate parts for BD140, check out Findchips.com