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BD681 AI Analysis:
Datasheet, Specs, Alternatives & ECAD

AI summary

BD681 product

BD681

Transistors - Bipolar (BJT) - Single

NPNDarlingtonTO-126Power Transistor

The BD681 is an NPN Darlington power transistor designed for medium-power linear and switching applications in industrial equipment.

Best for

  • Industrial linear applications
  • Switching circuits

Avoid if

  • New designs requiring RoHS compliance
  • High-volume production requiring active lifecycle support

Check before use

  • Current availability
  • Regulatory compliance for your region

Key specifications

VCEO
100 V
IC
4 A
PD
40 W
hFE
750

Compliance & Environment

RoHS
RoHS non-compliant
REACH
REACH Unaffected
MSL
1 (Unlimited)
ECCN
EAR99
HTSUS
8541.29.0095

Application

Industrial EquipmentPower Switching

Datasheet

Fairchild-Semiconductor-company-11.pdf

800 KB

Datasheet AI

CAD Models

Download ECAD models for BD681: KiCad symbol & footprint, Altium footprint, PCB footprint, and 3D model.

EDA Symbol
Schematic symbol for your EDA tool
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PCB Footprint
Land pattern for PCB layout
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3D Model
STEP file for mechanical design
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KiCad Library
Verified KiCad 8 symbol, footprint, and 3D model
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Where to Buy

Real-time and catalog pricing from verified distributors

Live prices updated on demand · Catalog (~) prices may differ

Alternative components

Alternatives are being enriched. Analyze this part in PartGenie for the latest matches.

Design and risk insights

Questions & answers

The BD681 is a silicon epitaxial-base NPN power transistor in a monolithic Darlington configuration, packaged in a TO-126 plastic housing.