BC239CG

Single Bipolar Transistors Overview

The onsemi BC239CG is an NPN silicon epitaxial planar transistor designed for general-purpose amplification and low-noise applications. It features a collector-emitter voltage (VCEO) of 25 V, a continuous collector current (IC) of 100 mA, and a minimum DC current gain (hFE) of 180 at IC=2mA, VCE=5V. The device operates within a junction temperature range of -55°C to +150°C and is housed in a TO-92 plastic package.

Single Bipolar Transistors Feature Summary

• Epitaxial planar NPN silicon construction for reliable amplification
• Low noise characteristics suitable for sensitive signal processing
• High DC current gain ensuring efficient signal control

Single Bipolar Transistors Applications

• General purpose amplifier circuits
• Low noise audio pre-amplifiers
• Switching applications requiring moderate current handling

Single Bipolar Transistors Procurement Notes

Verify the specific suffix CG against the official onsemi datasheet to confirm pinout configuration and electrical tolerances. Ensure the component matches the required TO-92 package dimensions and lead finish specifications for your assembly process. Cross-reference with authorized distributors to validate authenticity and traceability.

Single Bipolar Transistors Selection Notes

Select this component when a low-noise NPN transistor with moderate voltage ratings is required. The high hFE makes it suitable for stages needing significant current amplification. Consider thermal management if operating near maximum dissipation limits in enclosed environments.

Single Bipolar Transistors Part Context

The BC239 series belongs to onsemi's lineup of small-signal NPN transistors. It is commonly used in consumer electronics and industrial control systems where reliable switching and linear amplification are needed. The BC239CG variant specifically denotes a particular binning or packaging option within the broader BC239 family.

Single Bipolar Transistors Replacement Considerations

Compatible substitutes include BC239B, BC239C, and BC237/BC238 series variants from onsemi or other manufacturers, provided they meet the 25V VCEO and 100mA IC requirements. Verify pin compatibility and thermal characteristics before substitution.