KSC945LTA

Single Bipolar Transistors Overview

The Fairchild Semiconductor KSC945LTA is a small-signal NPN silicon epitaxial transistor housed in a TO-92 three-pin through-hole package. It features a maximum collector current of 150 mA and a collector-emitter voltage rating of 50 V, with a collector-base voltage of 60 V. The device has a power dissipation capacity of 250 mW and a minimum DC current gain (hFE) of 40. Its transition frequency is specified at 300 MHz, supporting operation up to a maximum junction temperature of 150°C.

Single Bipolar Transistors Feature Summary

• NPN polarity configuration for general-purpose switching and amplification
• High thermal stability with a maximum operating temperature of 150°C
• Through-hole mounting in a standard TO-92 plastic encapsulation

Single Bipolar Transistors Applications

• General-purpose signal amplification circuits
• Low-power switching applications
• Driver stages for indicator loads

Single Bipolar Transistors Procurement Notes

Verify the specific suffix 'LTA' against the official Fairchild or onsemi datasheet to confirm lead frame plating and tape-and-reel specifications. Ensure the component matches the required hFE binning and transition frequency parameters for the target circuit design before finalizing procurement.

Single Bipolar Transistors Selection Notes

Select this component when a low-cost NPN transistor with moderate current handling and high-voltage tolerance is required. The 150 mA limit and 50 V breakdown make it suitable for driving small relays or LEDs. Verify that the TO-92 package dimensions fit the available PCB real estate.

Single Bipolar Transistors Part Context

This part belongs to the KSC945 series of NPN transistors originally manufactured by Fairchild Semiconductor, which was later acquired by onsemi. The series provides a standardized solution for discrete semiconductor needs in consumer electronics and industrial control systems requiring reliable small-signal performance.

Single Bipolar Transistors Replacement Considerations

Equivalent parts include the ON Semiconductor KSC945CYTA and the STMicroelectronics BC847B (verify pinout compatibility). Cross-reference the specific electrical characteristics and package tolerances to ensure functional interchangeability.