BC559A

Single Bipolar Transistors Overview

The Diotec Semiconductor BC559A is a general-purpose PNP silicon planar epitaxial transistor housed in a TO-92 plastic package. It features a maximum collector current of 100 mA and a collector-emitter voltage (VCEO) of 30 V. The device offers a DC current gain (hFE) group A range of 110 to 220 at IC = -2 mA, with a maximum power dissipation of 500 mW. Operating temperatures span from -55°C to +150°C junction temperature.

Single Bipolar Transistors Feature Summary

• General-purpose PNP transistor suitable for universal signal processing, switching, and amplification applications
• Compliant with RoHS directives without exemption, REACH regulations, and conflict minerals standards
• Three distinct current gain groups available to accommodate varying circuit requirements

Single Bipolar Transistors Applications

• Signal processing circuits
• Electronic switching applications
• Amplification stages
• Commercial and industrial grade electronics

Single Bipolar Transistors Procurement Notes

Verify the specific ordering suffix when purchasing. Standard versions are commercial/industrial grade. Suffixes such as -Q indicate AEC-Q101 compliance, while -AQ denotes parts currently undergoing AEC-Q101 qualification. Confirm packaging details, as standard units typically ship in ammo packs, though bulk options may be requested separately.

Single Bipolar Transistors Selection Notes

Select the BC559A for low-voltage PNP switching or amplification tasks requiring a 30 V collector-emitter rating. Ensure the design accommodates the 500 mW power dissipation limit, which requires maintaining leads at ambient temperature within 2 mm of the case. Verify that the required hFE gain falls within Group A specifications for consistent performance.

Single Bipolar Transistors Part Context

This component belongs to the BC556 through BC559 series of general-purpose PNP transistors. While sharing similar physical packages and basic electrical structures, the series differentiates primarily by maximum voltage ratings and current gain groupings. The BC559A specifically targets lower voltage environments compared to higher-rated siblings like the BC557.

Single Bipolar Transistors Replacement Considerations

BC558A

Single Bipolar Transistors FAQ

What is the DC current gain range for the BC559A?

The BC559A corresponds to current gain group A, providing an hFE range of 110 to 220 when measured at a collector current of -2 mA and VCE of -5 V.

How does the BC559A differ from the BC559C?

The primary difference lies in the DC current gain grouping. The BC559A represents Group A (lower gain), whereas the BC559C represents Group C (higher gain). Both share identical voltage and current ratings.

Is the BC559A qualified for automotive applications?

Standard BC559A units are designed for commercial and industrial grades. Automotive-grade versions require specific ordering suffixes, such as -Q for AEC-Q101 compliant parts or -AQ for those in qualification.