MMBTA42LT1G

Single Bipolar Transistors Overview

The MMBTA42LT1G is a high-voltage NPN silicon bipolar junction transistor manufactured by onsemi. It operates within a collector-emitter voltage range of up to 300 Vdc and supports a continuous collector current of 500 mAdc. The device features a DC current gain (hFE) ranging from 25 to 40 depending on operating conditions, with a current-gain bandwidth product (fT) of 50 MHz. Thermal dissipation reaches 225 mW on an FR-5 board at 25°C ambient temperature. It functions reliably across a junction and storage temperature range of -55°C to +150°C.

Single Bipolar Transistors Feature Summary

• High voltage capability suitable for demanding switching applications
• Compact SOT-23 surface-mount package design
• Lead-free and halogen-free construction compliant with RoHS standards

Single Bipolar Transistors Applications

• General-purpose high-voltage switching circuits
• Driver stages in power supply designs
• Industrial control logic interfaces

Single Bipolar Transistors Procurement Notes

Verify the specific ordering suffix against official documentation to confirm packaging quantity and shipping format. Confirm that the component meets all required environmental compliance standards for the intended deployment region. Ensure thermal management strategies align with the specified maximum power dissipation limits under actual operating conditions.

Single Bipolar Transistors Selection Notes

Select this component when a single NPN transistor requires high breakdown voltage capabilities within a small footprint. Consider the thermal resistance characteristics relative to the available PCB copper area. Evaluate the minimum current gain requirements against the application's drive signal strength to ensure reliable saturation or amplification performance.

Single Bipolar Transistors Part Context

This part belongs to the MMBTA42L series of high-voltage transistors produced by onsemi. It shares the same physical package and general electrical profile as the SMMBTA42L variant, though automotive qualification prefixes may differ. The series provides a standardized solution for compact high-voltage switching needs in consumer and industrial electronics.

Single Bipolar Transistors Replacement Considerations

The MMBTA42LT3G serves as a direct functional substitute with identical electrical specifications but differs in tape and reel packaging quantity.