BC558BTAR

Single Bipolar Transistors Overview

The BC558BTAR is a PNP silicon epitaxial planar transistor manufactured by onsemi (formerly Fairchild Semiconductor). It is housed in a TO-92 lead-free package. The device supports a maximum collector current of 0.1 A and a collector-emitter voltage of 30 V. It features a minimum DC current gain (hFE) of 200. The component has a maximum power dissipation of 0.625 W and operates at temperatures up to 150 °C.

Single Bipolar Transistors Feature Summary

• PNP epitaxial silicon construction for reliable small-signal amplification
• Lead-free TO-92 cylindrical plastic package compliant with environmental directives
• High DC current gain suitable for general-purpose switching and amplification

Single Bipolar Transistors Applications

• General-purpose signal amplification circuits
• Switching applications requiring low current handling
• Complementary pairing with NPN transistors such as the BC548 series

Single Bipolar Transistors Procurement Notes

Verify that the specific procurement lot matches the BC558BTAR designation to ensure the correct hFE binning grade. Confirm RoHS compliance status, as older manufacturing runs may differ from current lead-free specifications. Check the manufacturer's official documentation for any updates regarding the transition from Fairchild to onsemi branding and packaging standards.

Single Bipolar Transistors Selection Notes

Select this component when a PNP transistor with a 30V rating and 100mA continuous current capacity is required. Ensure the application circuit accounts for the minimum hFE of 200 to guarantee proper biasing. Verify that the TO-92 through-hole package fits the target PCB layout constraints compared to surface-mount alternatives like the BC858.

Single Bipolar Transistors Part Context

This part belongs to the widely used BC558 family of PNP transistors, which serves as the complementary counterpart to the BC548 NPN series. The 'B' suffix indicates a specific DC current gain range, distinguishing it from other grades like 'A' or 'C'. The 'TAR' suffix typically denotes tape-and-reel packaging for automated assembly processes.

Single Bipolar Transistors Replacement Considerations

Direct substitutes include the BC558BTA and generic BC558B components sharing identical electrical ratings and TO-92 pinouts. Cross-reference with other manufacturers' BC558 variants to verify pin compatibility and thermal performance before implementation.