BC546A APM PBFREE

Single Bipolar Transistors Overview

The BC546A APM PBFREE is an NPN epitaxial silicon small-signal transistor manufactured by Central Semiconductor Corp. It utilizes a TO-92 (TO-226AA) plastic package with three leads. The device features a collector-emitter breakdown voltage of 65V and a maximum continuous collector current of 100mA. It offers a minimum DC current gain (hFE) of 110 in the 'A' subcode bin. The component supports a maximum power dissipation of 625mW and operates within a junction temperature range of -55°C to +150°C.

Single Bipolar Transistors Feature Summary

• NPN epitaxial silicon planar construction for reliable switching and amplification
• High collector-emitter breakdown voltage suitable for general-purpose applications
• Lead-free finish compliant with environmental directives

Single Bipolar Transistors Applications

• General-purpose signal amplification
• Electronic switching circuits
• Low-noise audio pre-amplifiers

Single Bipolar Transistors Procurement Notes

Verify the manufacturer designation as Central Semiconductor Corp against the specific part marking, as the BC546 series is widely produced by multiple vendors including Fairchild and ON Semiconductor. Confirm the 'APM' suffix corresponds to the specific tape-and-reel or bulk packaging configuration defined by the supplier. Ensure the 'PBFREE' designation aligns with RoHS compliance requirements for the intended assembly process.

Single Bipolar Transistors Selection Notes

Select this component when a standard NPN transistor with 65V rating and TO-92 form factor is required. The 'A' bin ensures a minimum hFE of 110, providing consistent gain for linear applications. Consider the 625mW thermal limit and ensure adequate heat sinking or airflow if operating near maximum ratings. Verify pinout compatibility with existing PCB footprints designed for TO-92 packages.

Single Bipolar Transistors Part Context

The BC546 series comprises NPN general-purpose transistors often used as complementary pairs to the BC556 PNP series. The BC546A specifically denotes the lowest gain bin within the BC546 family, typically ranging from 110 to 200. This component serves as a fundamental building block in analog electronics, replacing older equivalents like the 2N3904 in low-voltage, low-current scenarios where higher voltage tolerance is beneficial.

Single Bipolar Transistors Replacement Considerations

Direct substitutes include BC546B, BC546C, and 2N3904, provided the lower gain of the 'A' bin is acceptable. For surface-mount replacements, consider the BC846AW-AU in SOT-323 packaging, noting the difference in power dissipation capabilities.