BC557CBK

Single Bipolar Transistors Overview

The BC557CBK is a PNP bipolar junction transistor manufactured by Diotec Semiconductor, housed in a TO-92BK through-hole package. It features a maximum collector current of 100 mA and a collector-emitter breakdown voltage of 45 V. The device has a power dissipation rating of 500 mW and a transition frequency of 150 MHz. DC current gain (hFE) ranges from 420 to 800 at Ic=2mA and Vce=5V. Operating temperature spans -55°C to +150°C.

Single Bipolar Transistors Feature Summary

• High DC current gain for precise amplification
• Robust thermal stability up to 150°C
• Low saturation voltage for efficient switching

Single Bipolar Transistors Applications

• General-purpose signal amplification
• Switching circuits
• Driver stages for power transistors

Single Bipolar Transistors Procurement Notes

Verify the specific suffix BK indicates bulk packaging rather than tape and reel when sourcing. Confirm RoHS compliance status with the manufacturer as requirements vary by region. Ensure the TO-92BK lead forming matches your PCB assembly equipment specifications before finalizing procurement orders.

Single Bipolar Transistors Selection Notes

Select this component when high current gain is required for low-level signal processing. The 45V rating suits moderate voltage applications. Compare hFE minimums against circuit requirements to ensure adequate margin. Consider the TO-92BK package constraints for thermal management in enclosed designs.

Single Bipolar Transistors Part Context

This part belongs to the BC557 series of PNP transistors. It shares electrical characteristics with BC557C but differs in packaging format. The series is widely used in consumer electronics and industrial control systems requiring reliable small-signal handling.

Single Bipolar Transistors Replacement Considerations

BC557C is the direct electrical equivalent in standard TO-92 packaging. Verify pinout compatibility and thermal resistance differences between TO-92 and TO-92BK packages during substitution.