BC558CTA

Single Bipolar Transistors Overview

The BC558CTA is a PNP silicon epitaxial planar transistor manufactured by onsemi, housed in a TO-92 through-hole package. It features a maximum collector-emitter voltage of 30 V and a continuous collector current of 100 mA. The device offers a minimum DC current gain (hFE) of 420 at Ic=2mA and Vce=5V, with a transition frequency of 150 MHz. Maximum power dissipation is rated at 500 mW, and the junction temperature range extends up to +150 °C.

Single Bipolar Transistors Feature Summary

• High DC current gain for efficient signal amplification
• Low saturation voltage for improved switching efficiency
• Robust thermal performance with high junction temperature rating

Single Bipolar Transistors Applications

• General-purpose amplifier circuits
• Switching applications requiring low saturation voltage
• Driver stages for relay or LED loads

Single Bipolar Transistors Procurement Notes

Verify the manufacturer marking and date code against official onsemi documentation to ensure authenticity. Confirm that the component meets the specific hFE binning requirements for your design, as gain varies within the specified range. Check for RoHS compliance status if required by your manufacturing standards.

Single Bipolar Transistors Selection Notes

Select this component when a PNP transistor with moderate voltage ratings and high current gain is needed. The TO-92 package suits prototyping and low-volume production. Ensure the application current remains below 100 mA and voltage stays within 30 V limits to maintain reliability.

Single Bipolar Transistors Part Context

This part belongs to the standard BJT family used in discrete semiconductor applications. It serves as a fundamental building block for analog and digital logic interfaces. The BC558 series is widely recognized for its balance of performance and cost in consumer and industrial electronics.

Single Bipolar Transistors Replacement Considerations

BC558BTA is a verified substitute with similar electrical characteristics but potentially different gain binning. Verify pinout compatibility and thermal requirements before substitution.