BC239CTA

Single Bipolar Transistors Overview

The onsemi BC239CTA is a single NPN silicon small-signal transistor housed in a TO-92 plastic package. It features a maximum collector-emitter voltage of 25 V and a continuous collector current rating of 100 mA. The device supports a total power dissipation of 500 mW at 25°C ambient temperature, with a derating factor applied above this threshold. It operates within a junction temperature range of -55°C to +150°C and offers a minimum DC current gain (hFE) of 180 when tested at 2 mA collector current and 5 V collector-emitter voltage.

Single Bipolar Transistors Feature Summary

• NPN silicon construction for general-purpose amplification
• TO-92 through-hole mounting configuration
• High DC current gain suitable for signal processing

Single Bipolar Transistors Applications

• General-purpose amplifier circuits
• Switching applications
• Signal conditioning stages

Single Bipolar Transistors Procurement Notes

Verify the specific suffix 'CTA' against official manufacturer documentation to confirm binning or testing criteria. Ensure the component matches the required lead frame material and marking codes. Confirm RoHS compliance status if restricted substances are mandated for the target assembly process.

Single Bipolar Transistors Selection Notes

Select this component for low-power analog designs requiring moderate voltage handling and reliable switching characteristics. Compare hFE bins against circuit requirements to ensure adequate gain margins. Evaluate thermal management needs based on the 500 mW dissipation limit and expected operating ambient temperatures.

Single Bipolar Transistors Part Context

This part belongs to the BC239 family of NPN transistors, which includes variants such as BC239BBU and BC239CBU. These devices share similar electrical profiles but may differ in packaging details or specific gain classifications. The BC239 series is widely used in consumer electronics and industrial control systems for basic transistor functions.

Single Bipolar Transistors Replacement Considerations

Compatible substitutes include BC239BBU and BC239CBU from onsemi. Verify pinout compatibility and electrical parameter equivalence before substitution.