BC548_D81Z

Single Bipolar Transistors Overview

The onsemi BC548_D81Z is an NPN silicon planar epitaxial small-signal transistor housed in a TO-92 (TO-226AA) lead-free package. It features a collector-emitter voltage rating of 30V and a continuous collector current capacity of 100mA. The device supports a maximum power dissipation of 500mW at 25°C ambient temperature, with a junction-to-ambient thermal resistance of 357°C/W. It operates within a temperature range of -55°C to +150°C and includes a DC current gain (hFE) minimum of 110 at 2mA and 5V.

Single Bipolar Transistors Feature Summary

• NPN silicon planar epitaxial construction for reliable small-signal amplification
• Lead-free packaging compliant with environmental directives
• High thermal stability with a maximum junction temperature of 150°C

Single Bipolar Transistors Applications

• General-purpose amplifier circuits
• Switching applications requiring low noise operation
• Audio signal processing stages

Single Bipolar Transistors Procurement Notes

Verify the specific suffix D81Z against official onsemi documentation to confirm tape-and-reel specifications or marking variations. Ensure compatibility with RoHS requirements if applicable to your design constraints. Cross-reference datasheets from authorized distributors to validate availability and exact mechanical dimensions before finalizing procurement plans.

Single Bipolar Transistors Selection Notes

Select this component for designs requiring a standard NPN small-signal transistor with moderate voltage ratings. Consider the complementary BC558 series for PNP requirements. Evaluate thermal management needs given the 500mW dissipation limit in free air. Verify that the 30V breakdown voltage meets the circuit's peak operating conditions.

Single Bipolar Transistors Part Context

This part belongs to the BC546/BC547/BC548 family of general-purpose NPN transistors. The BC548 variant specifically offers a 30V collector-emitter voltage rating, distinguishing it from the higher-voltage BC547 (45V) and BC546 (65V). The D81Z suffix typically indicates a specific packaging or reel configuration provided by onsemi for automated assembly processes.

Single Bipolar Transistors Replacement Considerations

Direct substitutes include BC548A, BC548B, and BC548C from various manufacturers, which share identical electrical characteristics but differ in hFE binning. Equivalent parts from other vendors must match the TO-92 package and 30V/100mA ratings.