BC237ABU

Single Bipolar Transistors Overview

The onsemi BC237ABU is a general-purpose NPN silicon small-signal transistor housed in a TO-92-3 (TO-226AA) through-hole package. It features a maximum collector-emitter voltage of 45V and a continuous collector current rating of 100mA. The device supports a transition frequency of 200MHz and has a maximum power dissipation of 350mW. It offers a minimum DC current gain (hFE) of 120 at specified test conditions, suitable for amplifier and switching applications.

Single Bipolar Transistors Feature Summary

• NPN silicon construction for reliable small-signal amplification
• General-purpose design optimized for low-power switching tasks
• Through-hole mounting capability via standard leaded package

Single Bipolar Transistors Applications

• Low-frequency signal amplification circuits
• General-purpose electronic switching applications
• Driver stages for relay or LED control

Single Bipolar Transistors Procurement Notes

Verify the specific suffix against official manufacturer documentation to confirm exact electrical binning and package variant. Confirm component status as active or obsolete prior to procurement planning. Ensure compatibility with existing thermal management requirements given the 350mW dissipation limit. Cross-reference datasheet parameters for hFE ranges and saturation voltages to match circuit design specifications accurately.

Single Bipolar Transistors Selection Notes

Select this component when a standard NPN transistor with 45V breakdown and 100mA current capacity is required. Consider the TO-92 package constraints for PCB layout and thermal performance. Evaluate the 200MHz transition frequency against the target operating speed. Compare hFE minimums with alternative parts if higher gain consistency is necessary for the specific application load.

Single Bipolar Transistors Part Context

This part belongs to the BC237 series of NPN transistors manufactured by onsemi. The series provides standardized small-signal solutions for consumer and industrial electronics. The BC237ABU variant specifies particular gain and leakage characteristics within the broader family lineup, ensuring consistent performance for mass-produced designs requiring general-purpose amplification.

Single Bipolar Transistors Replacement Considerations

Compatible substitutes include the BC237A from other manufacturers such as Microsemi or MCC, provided pinouts and electrical limits align. Verify that replacement parts maintain the same TO-92 footprint and 45V/100mA ratings. Check datasheets for equivalent hFE bins and transition frequencies to ensure functional parity in the target circuit.