BC546B APM TIN/LEAD

Single Bipolar Transistors Overview

The BC546B APM TIN/LEAD is an NPN silicon epitaxial planar transistor manufactured by Central Semiconductor Corp. It is housed in a TO-92 (SOT-54) plastic package with three leads. The device is designed for general-purpose switching and amplification applications, featuring low current handling capabilities up to 100 mA and a maximum collector-emitter voltage of 65 V. The component utilizes lead-free tin plating on its terminals.

Single Bipolar Transistors Feature Summary

• NPN epitaxial silicon construction for reliable signal processing
• Low noise performance suitable for sensitive amplifier stages
• General-purpose design optimized for switching and amplification tasks

Single Bipolar Transistors Applications

• General purpose switching circuits
• Small signal amplification stages
• Audio pre-amplifier inputs

Single Bipolar Transistors Procurement Notes

Verify the specific manufacturer designation as Central Semiconductor Corp, noting that BC546B is a widely standardized part number produced by multiple vendors including NXP and Fairchild. Confirm the APM suffix indicates Ammo Pack packaging and TIN/LEAD denotes terminal composition. Ensure RoHS compliance status matches project requirements, as historical data varies by production batch and original manufacturer lineage.

Single Bipolar Transistors Selection Notes

Select this component when a standard NPN small-signal transistor with moderate gain and low voltage ratings is required. The TO-92 package facilitates through-hole mounting. Consider the hFE binning characteristics if precise DC current gain thresholds are necessary for the specific circuit design, as gain ranges vary between manufacturers.

Single Bipolar Transistors Part Context

This component belongs to the BC546 series of NPN general-purpose transistors. It serves as a complement to the PNP BC556 series. The BC546B variant specifically denotes a medium-gain binning classification within the broader family of low-power silicon planar transistors commonly used in consumer electronics and industrial control boards.

Single Bipolar Transistors Replacement Considerations

Direct pin-compatible substitutes include BC547B and BC548B from various manufacturers. For equivalent electrical characteristics, verify the hFE range matches the B-grade specification. Cross-reference datasheets from NXP, ON Semiconductor, or Diotec to ensure identical package dimensions and thermal limits.