KSC839YBU

Single Bipolar Transistors Overview

The KSC839YBU is an NPN epitaxial silicon transistor housed in a TO-92 package. It features a collector-emitter voltage of 30 V and a collector current rating of 100 mA. The device provides a DC current gain ranging from 40 to 400, classified by suffixes R, O, Y, G. Its current gain bandwidth product reaches up to 200 MHz, supporting high-frequency applications.

Single Bipolar Transistors Feature Summary

• NPN epitaxial silicon construction for reliable signal processing
• High current gain bandwidth product suitable for RF amplification
• Integrated hFE classification system for precise gain selection

Single Bipolar Transistors Applications

• FM/AM radio frequency amplifiers
• Radio converter circuits
• Oscillator stages
• Intermediate frequency (IF) amplifiers

Single Bipolar Transistors Procurement Notes

Verify the manufacturer origin, as the component was originally produced by Fairchild Semiconductor. Confirm the specific hFE bin via the ordering suffix (R, O, Y, or G). Ensure the TO-92 package dimensions match the design requirements before finalizing procurement.

Single Bipolar Transistors Selection Notes

Select based on required DC current gain ranges defined by the suffix codes. Verify that the 30 V collector-emitter voltage and 100 mA collector current limits accommodate the circuit's maximum operating conditions. Consider the 250 mW power dissipation capability for thermal management.

Single Bipolar Transistors Part Context

This component belongs to the family of small-signal NPN transistors designed for general-purpose amplification and switching. It utilizes a standard TO-92 through-hole package, making it compatible with legacy PCB layouts and manual assembly processes common in consumer electronics.

Single Bipolar Transistors Replacement Considerations

Check for direct equivalents such as the BC547 series or 2N3904, ensuring their voltage and current ratings meet or exceed the KSC839 specifications. Verify pinout compatibility and hFE characteristics to maintain circuit performance without redesign.

Single Bipolar Transistors FAQ

What do the suffix letters R, O, Y, and G indicate?

These letters denote the DC current gain (hFE) classification bins. For example, 'G' indicates a gain range of 200 to 400, while 'R' indicates 40 to 80.

Is this transistor suitable for automotive applications?

The provided datasheet does not specify automotive grade certification or AEC-Q101 compliance. It is primarily intended for commercial FM/AM radio applications.

What is the maximum junction temperature?

The absolute maximum rating for the junction temperature (TJ) is 150 °C.