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BC558C is listed in the Single Bipolar Transistors range at ChipApex. The manufacturer field lists Diotec Semiconductor. Its product description is TRANS PNP 30V 0.1A TO-92. Review the specifications below when checking this part for your BOM.
The BC558C is a PNP bipolar junction transistor manufactured by Diotec Semiconductor, housed in a TO-92 through-hole package. It features a maximum collector current of 100 mA and a collector-emitter voltage rating of 30 V. The device has a power dissipation capacity of 500 mW and a transition frequency of 150 MHz. DC current gain (hFE) ranges from 420 to 800 at specified test conditions. Operating temperature spans from -55°C to +150°C.
Verify the specific manufacturer lot code against the datasheet revision to ensure compliance with RoHS directives. Confirm that the TO-92 lead form matches your PCB footprint requirements. Check for any suffix variations that may indicate different gain bins or packaging types, as these do not alter electrical function but affect supply chain logistics.
Select this component when a standard PNP transistor with moderate current handling and high gain is required in a through-hole format. Compare hFE minimums against circuit bias requirements. Ensure the 30V voltage rating exceeds peak circuit voltages. Consider thermal management if operating near the 500mW limit in enclosed spaces.
Part of the BC558 series, which includes variants like BC558A and BC558B distinguished primarily by gain groupings. The BC558C represents the highest gain bin within this family. It serves as a direct pin-compatible alternative to industry-standard equivalents from other manufacturers, maintaining identical electrical specifications for design interchangeability.
BC559C is listed as a parameter-equivalent substitute by Diotec Semiconductor.
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