BC549BBK

Single Bipolar Transistors Overview

The BC549BBK is an NPN bipolar junction transistor manufactured by Diotec Semiconductor, housed in a TO-92 through-hole package. It features a maximum collector-emitter voltage of 30 V and a continuous collector current rating of 100 mA. The device supports a transition frequency of 300 MHz and dissipates up to 500 mW of power. It exhibits a minimum DC current gain (hFE) of 200 at 2 mA and 5 V, with a maximum collector cutoff current of 15 nA. The saturation voltage is limited to 600 mV at 5 mA base and 100 mA collector currents. Operating temperatures range from -55°C to 150°C.

Single Bipolar Transistors Feature Summary

• High DC current gain for effective signal amplification
• Low collector cutoff current for reduced leakage
• Wide operating temperature range for thermal stability

Single Bipolar Transistors Applications

• General-purpose switching circuits
• Small-signal amplification stages
• Audio pre-amplifier designs

Single Bipolar Transistors Procurement Notes

Verify the specific suffix BK against official Diotec documentation to confirm any distinct binning or packaging variations compared to standard BC549B units. Ensure RoHS compliance status matches project requirements, as manufacturing sources may vary. Cross-reference datasheet electrical limits with circuit design constraints before finalizing procurement orders.

Single Bipolar Transistors Selection Notes

Select this component when a high-gain NPN transistor is required for low-power applications. The TO-92 package suits prototyping and through-hole PCB layouts. Compare hFE bins and saturation voltages against alternative BJT families if specific linearity or switching speed thresholds are critical for the target application performance.

Single Bipolar Transistors Part Context

This part belongs to the BC548/BC549 series of general-purpose NPN transistors. The 'BK' suffix typically denotes a specific manufacturer lot or binning code rather than a functional change. It shares pinouts and basic electrical characteristics with the BC548B and BC549B, serving as a direct replacement in many legacy designs requiring standard small-signal capabilities.

Single Bipolar Transistors Replacement Considerations

Publicly confirmed parameter-equivalent substitutes include BC548B and BC549B from Diotec Semiconductor.