BC557

Description：TRANS PNP 45V 0.1A TO-92-3
Series：-

SKU:08261b031f43 Category: Single Bipolar Transistors Brand: onsemi

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Product introduction

BC557 is listed in the Single Bipolar Transistors range at ChipApex. The manufacturer field lists onsemi. Its product description is TRANS PNP 45V 0.1A TO-92-3. Review the specifications below when checking this part for your BOM.

Single Bipolar Transistors specifications for BC557

Description：TRANS PNP 45V 0.1A TO-92-3
Series：-
Mfr：onsemi
Package：Bulk
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)：15nA (ICBO)
DC Current Gain (hFE) (Min) @ Ic, Vce：110 @ 2mA, 5V
Power - Max：500 mW
Frequency - Transition：150MHz
Operating Temperature：150°C (TJ)
Mounting Type：Through Hole
Package / Case：TO-226-3, TO-92-3 (TO-226AA)
Supplier Device Package：TO-92-3

Single Bipolar Transistors datasheet and documents for BC557

BC557

Single Bipolar Transistors Overview

The onsemi BC557 is a PNP silicon bipolar junction transistor (BJT) designed for general-purpose small-signal applications. It operates with a maximum collector current of 100 mA and a collector-emitter breakdown voltage of 45 V. The device features a transition frequency of 150 MHz and a power dissipation rating of 500 mW. It is housed in a TO-92-3 through-hole package, suitable for standard lead-forming processes. The component supports a maximum operating temperature of +150°C and includes an emitter-base voltage limit of 5 V.

Single Bipolar Transistors Feature Summary

PNP polarity configuration for complementary switching and amplification circuits
High-frequency performance capability up to 150 MHz transition frequency
Robust thermal handling with a maximum junction temperature of 150°C

Single Bipolar Transistors Applications

General-purpose small-signal amplification
Complementary pairs with NPN transistors
Switching applications requiring low current control

Single Bipolar Transistors Procurement Notes

Verify the specific suffix code (e.g., A, B, C) as it determines the DC current gain binning. Confirm RoHS compliance status via the manufacturer's official documentation. Check for End-of-Life notices or Production Change Notifications regarding availability. Ensure the package type matches the required PCB footprint specifications.

Single Bipolar Transistors Selection Notes

Select based on the required hFE range; different suffixes offer varying gain levels. Verify that the 100 mA collector current meets the load requirements. Ensure the TO-92-3 package fits the mechanical constraints. Consider the 500 mW power dissipation limit under actual operating conditions.

Single Bipolar Transistors Part Context

The BC557 belongs to a widely used family of PNP small-signal transistors. It is commonly paired with the BC547 NPN transistor in complementary configurations. The series is known for reliability in consumer electronics and industrial control systems. Variants exist with different gain classifications to suit precise circuit design needs.