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BD681 - STMicroelectronics

Description: BD681, Darlington Transistor, NPN 4 A 100 V HFE:750, 3-Pin, SOT-32

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Symbol
BD681 - STMicroelectronics - PCB symbol
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PCB Footprints
BD681 - STMicroelectronics PCB footprint - Transistor Outline, Vertical - Transistor Outline, Vertical - SOT-32 (TO-126)
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3D Models
BD681 - STMicroelectronics - 3D model - Transistor Outline, Vertical - SOT-32 (TO-126)
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BD681 Details

  • Manufacturer Part Number:

    BD681

  • Brand Name:

    STMicroelectronics

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    SIP

  • Package Description:

    ROHS COMPLIANT PACKAGE-3

  • Pin Count:

    3

  • Country Of Origin:

    India

  • ECCN Code:

    EAR99

  • HTS Code:

    8541.29.00.95

  • Factory Lead Time:

    14 Weeks

  • Manufacturer:

    STMicroelectronics

  • YTEOL:

    9

  • Case Connection:

    ISOLATED

  • Collector Current-Max (IC):

    4 A

  • Collector-Emitter Voltage-Max:

    100 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

  • Peak Reflow Temperature (Cel):

    NOT SPECIFIED

  • Polarity/Channel Type:

    NPN

  • Power Dissipation Ambient-Max:

    40 W

  • Power Dissipation-Max (Abs):

    40 W

  • Qualification Status:

    Not Qualified

  • Surface Mount:

    NO

  • Terminal Finish:

    Matte Tin (Sn)

  • Terminal Form:

    THROUGH-HOLE

  • Terminal Position:

    SINGLE

  • Time@Peak Reflow Temperature-Max (s):

    NOT SPECIFIED

  • Transistor Application:

    SWITCHING

  • Transistor Element Material:

    SILICON

  • Transition Frequency-Nom (fT):

    10 MHz

  • VCEsat-Max:

    2.5 V

BD681 Frequently Asked Questions (FAQs)

  • The BD681 can operate safely between -40°C to 150°C, but the optimal operating temperature range is between 0°C to 70°C for maximum performance and reliability.
  • To ensure proper biasing, the BD681 requires a base-emitter voltage (VBE) of around 0.7V to 1.2V, and a collector-emitter voltage (VCE) of at least 1V to 2V. Additionally, the base current should be limited to 5mA to prevent overheating.
  • The BD681 can handle a maximum collector current (IC) of 500mA, and a peak current of 1A for short durations. However, it's recommended to keep the current below 300mA for continuous operation to ensure reliability.
  • Yes, the BD681 can be used as a switch. The switching characteristics include a turn-on time of around 10ns, a turn-off time of around 20ns, and a rise and fall time of around 5ns. However, the switching frequency should be limited to 100kHz to prevent overheating.
  • To protect the BD681 from ESD, it's recommended to handle the device with an anti-static wrist strap or mat, and to use ESD-sensitive handling procedures. Additionally, the device should be stored in an anti-static bag or tube to prevent damage.

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BD681 Overview

Use the download button to access the BD681 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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BD681 Alternates

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Image Part Number Model
Part Image BD681G Rochester Electronics LLC

4A, 100V, NPN, Si, POWER TRANSISTOR, TO-225AA, ROHS COMPLIANT, PLASTIC, CASE 77-09, 3 PIN
Part Image BD681 Rochester Electronics LLC

4A, 100V, NPN, Si, POWER TRANSISTOR, TO-225AA, PLASTIC, CASE 77-09, 3 PIN
Part Image BD681S Rochester Electronics LLC

4A, 100V, NPN, Si, POWER TRANSISTOR, TO-126
Part Image BD681S Fairchild Semiconductor Corporation

Power Bipolar Transistor, 4A I(C), 100V V(BR)CEO, 1-Element, NPN, Silicon, TO-126, Plastic/Epoxy, 3 Pin
Part Image BD681 Central Semiconductor Corp

Power Bipolar Transistor, 4A I(C), 100V V(BR)CEO, 1-Element, NPN, Silicon, TO-126, Plastic/Epoxy, 3 Pin
For a full list of alternate parts for BD681, check out Findchips.com