BC549C,112

Single Bipolar Transistors Overview

The BC549C,112 is an NPN general-purpose bipolar junction transistor manufactured by NXP Semiconductors. It is housed in a TO-92 (SOT54) plastic package designed for through-hole mounting. The device supports a maximum DC collector current of 100 mA and features a maximum collector-emitter voltage rating of 30 V. Additional electrical limits include a maximum collector-base voltage of 30 V, a maximum emitter-base voltage of 5 V, and a maximum power dissipation of 500 mW. The component operates at frequencies up to 100 MHz with a maximum operating temperature of +150 °C.

Single Bipolar Transistors Feature Summary

• Designed for low noise performance in audio frequency equipment applications
• Utilizes SPT (TO-92) plastic packaging for reliable through-hole installation
• Engineered as a general-purpose NPN transistor with complementary PNP variants

Single Bipolar Transistors Applications

• Low noise stages in audio frequency equipment
• General purpose switching and amplification circuits
• Audio pre-amplifier input stages

Single Bipolar Transistors Procurement Notes

Verify the specific ordering code suffix against official NXP documentation to confirm package type and tape-and-reel specifications. Ensure the procurement channel provides valid traceability for the semiconductor batch. Confirm that the received components match the SOT54 physical dimensions and pinout configuration defined in the datasheet before integration into the design.

Single Bipolar Transistors Selection Notes

Select this component when low noise characteristics are required for audio signal processing or general-purpose amplification tasks. The 100 mA current capability and 30 V voltage ratings suit standard low-power discrete circuit designs. Consider the TO-92 package constraints regarding thermal dissipation and board space requirements during the initial schematic capture phase.

Single Bipolar Transistors Part Context

This part belongs to the BC549 series of NPN general-purpose transistors from NXP Semiconductors. The series is widely recognized for its reliability in consumer electronics and industrial control applications. The BC549C variant specifically offers high DC current gain (hFE), making it suitable for precision analog applications where consistent amplification factors are necessary across production batches.

Single Bipolar Transistors Replacement Considerations

Official complementary PNP transistors in the same series include the BC559 and BC560. Designers requiring direct replacement should verify that the substitute component meets the original 100 mA current and 30 V voltage specifications while maintaining compatible pinout configurations.