BC557C,112

Single Bipolar Transistors Overview

The BC557C,112 is a PNP silicon small-signal transistor manufactured by NXP Semiconductors. It is housed in a TO-92 (SOT54) plastic package with three pins. The device is designed for general-purpose switching and amplification applications. Key electrical specifications include a maximum collector current of 100 mA and a collector-emitter voltage of 45 V. The component features a minimum DC current gain (hFE) of 125. It operates within a temperature range up to 150 °C and complies with RoHS standards.

Single Bipolar Transistors Feature Summary

• PNP silicon construction for general-purpose signal processing
• Low current handling capability suitable for small-signal tasks
• Plastic TO-92 encapsulation for through-hole mounting

Single Bipolar Transistors Applications

• General purpose switching circuits
• Small-signal amplification stages
• Complementary pairing with NPN transistors such as BC546, BC547, or BC548

Single Bipolar Transistors Procurement Notes

Verify the specific ordering code BC557C,112 against official NXP documentation to confirm package type and tape-and-reel configuration. Ensure compatibility with design requirements regarding thermal management and pinout orientation. Cross-reference datasheet revisions to validate parameter consistency before finalizing procurement decisions.

Single Bipolar Transistors Selection Notes

Select this component when a PNP transistor with moderate current capacity and low voltage ratings is required. It serves as a complement to the BC54x series. Consider the TO-92 package constraints for board space and thermal dissipation. Verify that the hFE binning meets the circuit's gain requirements for stable operation.

Single Bipolar Transistors Part Context

This part belongs to the BC557 family of general-purpose PNP transistors produced by NXP. It is functionally similar to parts from other manufacturers but may differ in specific parameter tolerances. The BC557C variant typically offers higher current gain than the B grade. It is widely used in consumer electronics and industrial control systems requiring reliable small-signal performance.

Single Bipolar Transistors Replacement Considerations

Direct substitutes include BC557B and BC557A from NXP, which share the same package but differ in hFE ranges. Other manufacturers offer equivalent parts like the 2N3906, though pinouts and exact parameters must be verified against the original schematic requirements.