BC546ABU

Single Bipolar Transistors Overview

The BC546ABU is an NPN epitaxial silicon transistor from the BC546 series, housed in a TO-92 3L bulk package. It features a collector-emitter voltage (VCEO) of 65 V and a collector-base voltage (VCBO) of 80 V. The device supports a DC collector current of 100 mA with a power dissipation of 500 mW. The 'A' classification indicates a DC current gain (hFE) range of 110 to 220 at IC = 2 mA. Key electrical characteristics include a base-emitter saturation voltage of up to 700 mV and a current gain bandwidth product of 300 MHz.

Single Bipolar Transistors Feature Summary

• Designed for switching and amplifier applications
• High-voltage capability with 65 V collector-emitter rating
• Complements the BC556 through BC560 PNP transistor series

Single Bipolar Transistors Applications

• General-purpose switching circuits
• Linear amplifier stages
• Complementary pairs with BC55x series transistors

Single Bipolar Transistors Procurement Notes

Verify the part number against ON Semiconductor's current database, as Fairchild order numbers containing underscores may have been updated to dashes. Confirm the specific hFE bin (A, B, or C) required for your design, as the BC546ABU specifies the A bin. Ensure the TO-92 bulk packaging meets your assembly line requirements. Check for any recent datasheet revisions that might affect absolute maximum ratings or thermal characteristics.

Single Bipolar Transistors Selection Notes

Select the BC546ABU when a high-voltage NPN transistor with moderate current gain is required. The 'A' suffix denotes a lower hFE range compared to B or C variants, offering tighter gain control for specific linear applications. Consider the 65 V VCEO rating for circuits exceeding standard 45 V limits. Evaluate the TO-92 package constraints for thermal management if operating near the 500 mW dissipation limit.

Single Bipolar Transistors Part Context

This component belongs to the BC546/BC547/BC548/BC549/BC550 family of NPN epitaxial silicon transistors originally manufactured by Fairchild Semiconductor and now integrated into ON Semiconductor's portfolio. The BC546 variant specifically distinguishes itself within the family through its higher voltage ratings compared to the BC547, BC548, and BC549 models.

Single Bipolar Transistors Replacement Considerations

Direct substitutes include other BC546 variants with different hFE bins (BC546B, BC546C) or packaging methods (ATA, BTA, BTF). Complementary PNP replacements are available in the BC556 series.