BC558CTA

Single Bipolar Transistors Overview

The BC558CTA is a PNP epitaxial silicon small-signal transistor manufactured by Fairchild Semiconductor. It is housed in a lead-free TO-92 (TO-226AA) three-pin package designed for through-hole mounting. The device features a maximum collector current of 100 mA and a collector-emitter breakdown voltage of 30 V. It offers a minimum DC current gain (hFE) of 420 at a collector current of 2 mA, classifying it as a high-gain variant within the BC558 series. The transition frequency is rated at 150 MHz, with a maximum power dissipation of 500 mW.

Single Bipolar Transistors Feature Summary

• High DC current gain suitable for sensitive amplification tasks
• Lead-free construction compliant with environmental standards
• Epitaxial silicon design for stable switching performance

Single Bipolar Transistors Applications

• General-purpose amplifier circuits
• Signal switching applications
• Complementary pairing with NPN transistors

Single Bipolar Transistors Procurement Notes

Verify that the specific procurement lot matches the BC558CTA designation to ensure the high-gain C binning is present. Confirm the manufacturer origin is Fairchild Semiconductor or an authorized licensee, as other vendors may use different suffixes for identical electrical characteristics. Ensure the TO-92 package form factor aligns with the target PCB footprint requirements.

Single Bipolar Transistors Selection Notes

Select this component when a PNP transistor with significantly higher current gain than standard variants is required. The BC558C provides superior amplification capabilities compared to A or B grade devices. Verify that the 30 V voltage rating and 100 mA current limit are sufficient for the intended load conditions before implementation.

Single Bipolar Transistors Part Context

This part belongs to the BC558 family of PNP transistors, which are widely used as general-purpose signal amplifiers and switches. The 'TA' suffix typically indicates tape-and-reel packaging from Fairchild Semiconductor, distinguishing it from bulk or cut-tape variations while maintaining identical electrical specifications.

Single Bipolar Transistors Replacement Considerations

Equivalent parts include the BC558C from other manufacturers such as ON Semiconductor or Diotec. Verify that substitute components maintain the same hFE range and package dimensions for direct replacement.