BC557B Transistor Datasheet

PNP BJT | LGE

PNPTO-92General Purpose
VCEO
45V
Ic Max
100mA
Pd Max
625mW
Gain
180
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Quick Reference

The BC557B is a PNP bipolar transistor in a TO-92 package, designed for general purpose applications. It supports a breakdown voltage of 45V and continuous collector current of 100mA. This component is widely used in PNP switching and linear amplification circuits.

Technical Specifications

ParameterValueDescription
ManufacturerLGEOriginal Manufacturer
PackageTO-92Physical mounting form factor
VCEO45VBreakdown voltage
IC Max100mACollector current
Pd Max625mWPower dissipation
Gain180DC current gain
Frequency150MHzTransition frequency
VCE(sat)650mVSaturation voltage
Vebo5VEmitter-Base voltage
Temp-Operating temperature range

Direct Replacements & Alternatives

Part NumberTypePackageVCEOIcPd
2SA1015(RANGE:200-400) PNP TO-92 50V 150mA 400mW
BC327-40BK PNP TO-92 45V 800mA 625mW
2N3906 PNP TO-92 40V 200mA 625mW
BC327-25 PNP TO-92 45V 800mA 625mW
2SA1015-GR PNP TO-92 50V 150mA 400mW
KTA1266 PNP TO-92 50V 150mA 625mW
2SA1015 PNP SOT-23 50V 150mA 200mW
BC327 PNP TO-92 45V 800mA 625mW
2N3906 PNP TO-92 40V 200mA 625mW
2N3906 PNP TO-92 40V 200mA 625mW
View all TO-92 PNP Transistors ›