BD437 Transistor Datasheet

NPN BJT | ST

NPNTO-126High Power
VCEO
45V
Ic Max
4A
Pd Max
36W
Gain
-
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Quick Reference

The BD437 is a NPN bipolar transistor in a TO-126 package, designed for high power applications. It supports a breakdown voltage of 45V and continuous collector current of 4A. This component is widely used in NPN switching and linear amplification circuits.

Technical Specifications

ParameterValueDescription
ManufacturerSTOriginal Manufacturer
PackageTO-126Physical mounting form factor
VCEO45VBreakdown voltage
IC Max4ACollector current
Pd Max36WPower dissipation
Gain-DC current gain
Frequency-Transition frequency
VCE(sat)-Saturation voltage
Vebo3MHzEmitter-Base voltage
Temp-65℃~+150℃Operating temperature range

Direct Replacements & Alternatives

Part NumberTypePackageVCEOIcPd
BD13516STU-HXY NPN TO-126 45V 1.5A 1W
BD136 NPN TO-126 45V 1.5A 1W
BD135-16 NPN TO-126 45V 1.5A 1.25W
BD437 NPN TO-126 45V 4A 36W
View all TO-126 NPN Transistors ›