ProjectsPricingInsights

BD437 AI Analysis:
Datasheet, Specs, Alternatives & ECAD

AI summary

BD437 product

BD437

Transistors - Bipolar (BJT) - Single

NPNPower TransistorTO-126

The BD437 is a general-purpose NPN power transistor in a TO-126 package, suitable for medium-power linear and switching circuits.

Best for

  • Linear power stages
  • Switching applications

Avoid if

  • High-power designs exceeding 1.25W
  • New designs requiring long-term availability

Check before use

  • Thermal dissipation requirements
  • Lifecycle status

Key specifications

VCEO
45 V
IC
4 A
PC
1.25 W

Compliance & Environment

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

Application

PowerGeneral

Datasheet

Fairchild-Semiconductor-company-11.pdf

800 KB

Datasheet AI

CAD Models

Download ECAD models for BD437: KiCad symbol & footprint, Altium footprint, PCB footprint, and 3D model.

EDA Symbol
Schematic symbol for your EDA tool
Get Files
PCB Footprint
Land pattern for PCB layout
Get Files
3D Model
STEP file for mechanical design
Get Files
KiCad Library
Verified KiCad 8 symbol, footprint, and 3D model
Generate library

Login required · CAD models billed separately as an add-on

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 BD437 is a silicon epitaxial-base NPN power transistor designed for medium-power applications.