BC550ATA

Single Bipolar Transistors Overview

The onsemi BC550ATA is an NPN silicon epitaxial planar transistor housed in a TO-92 (TO-226AA) three-pin through-hole package. It features a maximum collector current of 100 mA and a collector-emitter voltage rating of 45 V, with a collector-base voltage of 50 V. The device offers a minimum DC current gain (hFE) of 110 and a maximum power dissipation of 500 mW at 25°C. Operating temperatures range from 0°C to 150°C junction temperature.

Single Bipolar Transistors Feature Summary

• Low noise performance suitable for sensitive signal amplification
• Complementary pairing available within the BC556–BC560 series
• RoHS compliant lead-free construction

Single Bipolar Transistors Applications

• General-purpose low-noise amplifier circuits
• Audio pre-amplifier stages
• Signal switching applications

Single Bipolar Transistors Procurement Notes

Verify the specific suffix 'ATA' against the official manufacturer datasheet to confirm pinout orientation and electrical tolerances. Ensure the component matches the required RoHS compliance status for your assembly process. Confirm that the TO-92 package dimensions align with your PCB footprint requirements before finalizing procurement.

Single Bipolar Transistors Selection Notes

Select this component when designing circuits requiring low noise characteristics alongside standard NPN switching capabilities. Compare the 45V breakdown voltage against circuit supply rails to ensure adequate safety margins. Consider the complementary PNP counterpart if push-pull output stages are required for the design.

Single Bipolar Transistors Part Context

This part belongs to the BC550 series of NPN transistors manufactured by onsemi. The series is designed as a complement to the BC560 family of PNP devices. These components utilize epitaxial silicon planar technology to provide reliable performance in general-purpose electronic applications.

Single Bipolar Transistors Replacement Considerations

Consult official substitution guides for equivalent NPN transistors with matching 100mA current ratings and 45V voltage limits. Verify that any alternative maintains the same TO-92 package form factor and hFE gain classification.