BC556ABK

Single Bipolar Transistors Overview

The BC556ABK is a PNP silicon epitaxial planar transistor manufactured by Diotec Semiconductor, housed in a TO-92BK through-hole package. It features a maximum collector-emitter voltage (VCEO) of 65 V and a continuous collector current (IC) of 100 mA. The device has a power dissipation rating of 500 mW and a transition frequency (fT) of 150 MHz. Electrical characteristics include a collector-base voltage (VCBO) of 80 V, an emitter-base voltage (VEBO) of 5 V, and a collector-emitter saturation voltage of 250 mV. The DC current gain (hFE) maximum is specified at 120. Operating temperatures range from -55 °C to +150 °C.

Single Bipolar Transistors Feature Summary

• PNP polarity configuration for switching and amplification applications
• Through-hole TO-92BK plastic package construction
• High thermal stability with junction temperature up to 150 °C

Single Bipolar Transistors Applications

• General purpose switching circuits
• Audio frequency amplifier stages
• Signal processing applications

Single Bipolar Transistors Procurement Notes

Verify the specific suffix BK against official Diotec Semiconductor documentation to confirm package type and binning. Ensure the hFE group matches design requirements. Confirm RoHS compliance status via the manufacturer's datasheet before integration. Cross-reference the part number with authorized distributors to validate authenticity and supply chain integrity.

Single Bipolar Transistors Selection Notes

Select this component when a PNP transistor with 65 V breakdown and 100 mA current capability is required in a TO-92 package. Compare hFE ranges against circuit sensitivity needs. Consider thermal management for 500 mW dissipation. Verify compatibility with existing PCB footprints for TO-92BK mounting.

Single Bipolar Transistors Part Context

The BC556ABK belongs to the BC556 series of PNP general-purpose transistors. This series is widely used in consumer electronics and industrial equipment for low-power signal handling. The 'A' designation typically indicates a specific current gain binning within the series, while 'BK' denotes the specific packaging variant.

Single Bipolar Transistors Replacement Considerations

BC557BBK: Higher voltage rating (45 V VCEO vs 65 V), similar current and package. BC558C: Lower voltage rating (30 V VCEO), higher gain. Verify voltage margins and gain requirements before substitution.