Free shipping worldwide on featured products - use code JUNE22_FREESHIP at checkout! Start your design today.Free shipping worldwide on featured products - use code JUNE22_FREESHIP at checkout! Start your design today.Free shipping worldwide on featured products - use code JUNE22_FREESHIP at checkout! Start your design today.Free shipping worldwide on featured products - use code JUNE22_FREESHIP at checkout! Start your design today.Free shipping worldwide on featured products - use code JUNE22_FREESHIP at checkout! Start your design today.

BUL138

Active

High voltage fast-switching NPN power transistor

Quantity $ per Unit Savings
1 - 9$1.560%
10 - 24$1.4010%
25 - 99$1.3215%
100 - 499$1.1328%
500$0.9241%
Contact Sales
In stock
$1.56
Parameter NameParameter Value
Operating RangeIndustrial
Operating Temp Min Celsius-65.0
Operating Temp Max Celsius150.0
ECCN USEAR99
ECCN EUNEC
Packing TypeTube
ROHS Compliance GradeEcopack2
GradeIndustrial
Package NameTO-220

The BUL138 is manufactured using high voltage Multi Epitaxial Planar technology for high switching speeds and high voltage capability. It uses a Cellular Emitter structure with planar edge termination to enhance switching speeds.


The BUL series is designed for use in lighting applications and low cost switch-mode power supplies.

Key features
  • FULLY CHARACTERIZED AT 125oC
  • VERY HIGH SWITCHING SPEED
  • STMicroelectronics PREFERRED SALESTYPE
  • HIGH VOLTAGE CAPABILITY
  • NPN TRANSISTOR
  • MINIMUM LOT-TO-LOT SPREAD FOR RELIABLE OPERATION
  • LOW SPREAD OF DYNAMIC PARAMETERS