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BUL49D AI Analysis:
Datasheet, Specs, Alternatives & ECAD

AI summary

BUL49D product

BUL49D

Transistors - Bipolar (BJT) - Single

NPNPower TransistorHigh VoltageFast Switching

The BUL49D is a high-voltage NPN power transistor optimized for fast switching in halogen lamp electronic transformers and low-power converters.

Best for

  • Halogen lamp electronic transformers
  • Low-power flyback converters

Avoid if

  • Applications requiring low-voltage operation
  • Designs where thermal space is extremely limited without adequate heatsinking

Check before use

  • Package type compatibility
  • Thermal resistance requirements

Key specifications

VCES
850 V
VCEO
450 V
IC
5 A

Compliance & Environment

RoHS
ROHS3 Compliant
REACH
-
MSL
-
ECCN
-
HTSUS
-

Application

Power ConversionLighting

Datasheet

bulb49d.pdf

800 KB

Datasheet AI

CAD Models

Download ECAD models for BUL49D: 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 BUL49D is a high-voltage, fast-switching NPN power transistor from STMicroelectronics, built using multi-epitaxial planar technology.