KSC945OBU

Single Bipolar Transistors Overview

The KSC945OBU is a discontinued NPN epitaxial silicon transistor manufactured by onsemi. It operates in a TO-92-3 (CASE 135AR) through-hole package with standard pinout: Emitter (Pin 1), Base (Pin 2), and Collector (Pin 3). Key electrical ratings include a collector-base voltage of 60 V, collector-emitter voltage of 50 V, and emitter-base voltage of 5 V. The device supports a maximum continuous collector current of 150 mA and dissipates up to 250 mW of power. It features a typical current gain bandwidth product of 300 MHz and a DC current gain ranging from 120 to 240 at 1.0 mA.

Single Bipolar Transistors Feature Summary

• Designed for audio frequency amplifier and high-frequency oscillator applications
• Complementary to the KSA733 PNP transistor
• Provides high current gain bandwidth product for signal processing

Single Bipolar Transistors Applications

• Audio frequency amplification circuits
• High-frequency oscillator designs

Single Bipolar Transistors Procurement Notes

This component is officially listed as discontinued by onsemi and is not recommended for new designs. Verify availability through secondary distributors or surplus channels. Confirm that the specific ordering suffix matches the required lead configuration and packaging format before procurement.

Single Bipolar Transistors Selection Notes

Select this part only for legacy circuit maintenance or replacement where the original design specifications are fixed. Ensure the application does not require new design recommendations due to its discontinued status. Validate thermal management requirements against the specified junction-to-ambient resistance.

Single Bipolar Transistors Part Context

The KSC945OBU belongs to the KSC945 series of NPN transistors. It utilizes a standard TO-92 plastic package without center collector leads, distinguishing it from variants like the KSC945CYTA which feature a center collector configuration. The 'OBU' suffix indicates a specific bulk packaging configuration.

Single Bipolar Transistors Replacement Considerations

The datasheet explicitly identifies the KSA733 as the complementary device. For direct replacements, verify equivalent NPN characteristics such as voltage ratings and current gain.