TIP121 Transistor Datasheet

NPN BJT | ST

NPNTO-220-3General Purpose
VCEO
80V
Ic Max
5A
Pd Max
2W
Gain
1000
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Quick Reference

The TIP121 is a NPN bipolar transistor in a TO-220-3 package, designed for general purpose applications. It supports a breakdown voltage of 80V and continuous collector current of 5A. This component is widely used in NPN switching and linear amplification circuits.

Technical Specifications

ParameterValueDescription
ManufacturerSTOriginal Manufacturer
PackageTO-220-3Physical mounting form factor
VCEO80VBreakdown voltage
IC Max5ACollector current
Pd Max2WPower dissipation
Gain1000DC current gain
Frequency-Transition frequency
VCE(sat)4VSaturation voltage
Vebo-Emitter-Base voltage
Temp-Operating temperature range

Direct Replacements & Alternatives

Part NumberTypePackageVCEOIcPd
TIP41C255 NPN TO-220-3 100V 1.5A 1W
View all TO-220-3 NPN Transistors ›