BC548BG

Single Bipolar Transistors Overview

The onsemi BC548BG is an NPN silicon epitaxial planar transistor designed for amplifier applications. It features a collector-emitter voltage of 30 Vdc and a continuous collector current of 100 mAdc. The device provides a total power dissipation of 625 mW at 25°C ambient temperature, with a junction-to-ambient thermal resistance of 200 °C/W. Operating within a temperature range of -55 to +150 °C, the BC548BG utilizes a TO-92 package (Case 29) with straight leads in bulk packaging.

Single Bipolar Transistors Feature Summary

• NPN silicon epitaxial planar construction optimized for general-purpose amplifier circuits
• Lead-free package compliant with environmental directives
• Robust thermal performance supporting operation up to 150 °C junction temperature

Single Bipolar Transistors Applications

• General-purpose small signal amplification
• Low-frequency switching applications
• Audio pre-amplifier stages

Single Bipolar Transistors Procurement Notes

Verify the specific ordering suffix 'G' confirms lead-free status as per onsemi documentation. Confirm the package style matches the required lead configuration for your assembly process. Ensure the component meets RoHS compliance requirements for your target market regulations before finalizing procurement specifications.

Single Bipolar Transistors Selection Notes

Select this component when a standard NPN small-signal transistor with moderate gain is required. The BC548 series offers distinct hFE bins; verify the specific gain bin matches your circuit design needs. Consider the complementary BC558 series if a PNP counterpart is needed for push-pull configurations or differential pairs.

Single Bipolar Transistors Part Context

The BC548BG belongs to the BC546/BC547/BC548 family of NPN silicon transistors manufactured by onsemi. This family shares similar physical characteristics but differs in breakdown voltage ratings. The BC548 variant specifically provides a 30 V collector-emitter rating, distinguishing it from the higher-voltage BC546 and intermediate BC547 models.

Single Bipolar Transistors Replacement Considerations

Compatible substitutes include other manufacturers' BC548B variants in TO-92 packages. Verify pinout compatibility (Collector-Base-Emitter) and electrical parameters such as hFE ranges and saturation voltages to ensure functional equivalence in existing designs.