BC546

Single Bipolar Transistors Overview

The BC546 is an NPN epitaxial silicon transistor designed for switching and amplifier applications. It features a collector-emitter voltage (VCEO) of 65 V and a collector-base voltage (VCBO) of 80 V. The device supports a maximum DC collector current (IC) of 100 mA and a collector power dissipation (PC) of 500 mW at 25°C ambient temperature. The junction temperature rating is 150 °C, with a storage range from -65 to +150 °C. Electrical characteristics include a DC current gain (hFE) ranging from 110 to 800 depending on the classification, a transition frequency (fT) of 300 MHz, and a noise figure between 2.0 and 10.0 dB.

Single Bipolar Transistors Feature Summary

• High-voltage capability suitable for demanding switching and amplification circuits
• Low-noise performance optimized for sensitive signal processing applications
• Complementary design available within the broader BC556 through BC560 series

Single Bipolar Transistors Applications

• General-purpose switching circuits
• Linear amplifier stages
• Low-noise audio pre-amplifiers

Single Bipolar Transistors Procurement Notes

Verify the specific ordering suffix against the official ON Semiconductor website to ensure correct packing method and marking. Confirm that the component meets RoHS compliance requirements if applicable to your manufacturing process. Review the absolute maximum ratings carefully to prevent overstressing the device during operation or testing procedures.

Single Bipolar Transistors Selection Notes

Select this component when a high collector-emitter voltage of 65 V is required alongside low-noise characteristics. Ensure the chosen hFE bin matches the circuit's gain requirements. Verify thermal management capabilities for the intended power dissipation levels in the final assembly environment.

Single Bipolar Transistors Part Context

This part belongs to the BC546-BC550 family of NPN epitaxial silicon transistors originally developed by Fairchild Semiconductor. Following corporate integration, these products are now managed under the ON Semiconductor portfolio. The datasheet reflects historical Fairchild documentation while maintaining current product specifications and ordering guidelines.

Single Bipolar Transistors Replacement Considerations

Direct substitutes include BC547, BC548, BC549, and BC550 variants within the same family. Cross-manufacturer equivalents such as MMBT3904 may be considered if voltage ratings align with application constraints.