BC557B

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Part Number	BC557B
Manufacturer	Linear Technology
Category	Discrete Semiconductor › Transistors - Bipolar (BJT) - Single
Description	TRANS PNP 45V 0.1A TO92
Lifecycle	Active
RoHS	No RoHS Information
EDA/CAD Models	BC557B PCB Footprint and Symbol
Warehouses	USA, Europe, China, Hong Kong SAR
Estimated Delivery	Dec 09 - Dec 13 2025(Choose Expedited Shipping)
Warranty	Up to 1 year [Limited-Warranty]*
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BC557B Specifications

Part Number:	BC557B
Brand:	Linear Technology
Lifecycle:	Active
RoHS:	Lead free / RoHS Compliant
Category:	Discrete Semiconductor
Subcategory:	Transistors - Bipolar (BJT) - Single
Manufacturer:	Linear Technology
Product Status:	Obsolete
Transistor Type:	PNP
Current - Collector (Ic) (Max):	100 mA
Voltage - Collector Emitter Breakdown (Max):	45 V
Vce Saturation (Max) @ Ib, Ic:	650mV @ 5mA, 100mA
Current - Collector Cutoff (Max):	100nA
DC Current Gain (hFE) (Min) @ Ic, Vce:	180 @ 2mA, 5V
Power - Max:	625 mW
Frequency - Transition:	320MHz
Operating Temperature:	-55°C ~ 150°C (TJ)
Mounting Type:	Through Hole
Package / Case:	TO-226-3, TO-92-3 (TO-226AA) Formed Leads
Supplier Device Package:	TO-92 (TO-226)

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