BC559B

Single Bipolar Transistors Overview

The onsemi BC559B is a PNP silicon epitaxial planar transistor housed in a TO-92 three-pin package. It features a maximum collector-emitter voltage (VCEO) of -30 V and a maximum collector-base voltage (VCBO) of -30 V. The device supports a maximum DC collector current (IC) of -100 mA with a power dissipation (Pd) of 500 mW. The minimum DC current gain (hFE) is specified at 100 under standard test conditions. Operating temperatures range from -55°C to +150°C, with a transition frequency (fT) of 10 MHz.

Single Bipolar Transistors Feature Summary

• PNP polarity configuration for complementary circuit designs
• Low noise performance characteristics suitable for sensitive signal processing
• Through-hole mounting capability via TO-92 package

Single Bipolar Transistors Applications

• General purpose amplification circuits
• Switching applications requiring low noise
• Complementary pairs with NPN transistors

Single Bipolar Transistors Procurement Notes

Verify the specific suffix against official datasheets to confirm hFE binning and packaging variations. Confirm RoHS compliance status for the specific manufacturing lot. Ensure the TO-92 pinout matches the target PCB footprint design requirements before integration.

Single Bipolar Transistors Selection Notes

Select this component when low noise performance is critical for PNP switching or amplification tasks. Compare hFE ranges against circuit biasing requirements. Verify thermal management needs given the 500 mW power dissipation limit in the TO-92 package.

Single Bipolar Transistors Part Context

Part of the BC556-BC560 series of low noise transistors. Designed as a complement to the BC546-BC550 NPN series. Widely used in general electronics for audio and RF signal processing where noise figures are important constraints.

Single Bipolar Transistors Replacement Considerations

Check BC559C for higher gain requirements. Verify BC559A if lower gain thresholds suffice. Cross-reference with other manufacturers' BC559B equivalents ensuring identical electrical ratings and package dimensions.