MMBT4401

Single Bipolar Transistors Overview

The MMBT4401 is an NPN silicon epitaxial planar transistor designed for switching applications. It features a maximum collector-emitter voltage of 40 V, a collector-base voltage of 60 V, and a continuous collector current rating of 600 mA. The device dissipates up to 300 mW of power with a thermal resistance of 417 °C/W. Electrical characteristics include a transition frequency of 250 MHz, a DC current gain ranging from 20 to 300 depending on operating conditions, and saturation voltages of 0.75 V (VCE) and 1.2 V (VBE) at high currents. It operates within a junction temperature range of -55°C to +150°C.

Single Bipolar Transistors Feature Summary

• Ultra-small surface mount package
• Plastic-Encapsulated construction

Single Bipolar Transistors Applications

• Switching circuits
• General-purpose amplification

Single Bipolar Transistors Procurement Notes

Verify the specific manufacturer documentation for the Good-Ark Semiconductor MMBT4401 to confirm exact electrical tolerances and marking codes. Ensure the SOT-23 package dimensions align with your PCB footprint requirements. Confirm RoHS compliance status directly with the supplier or datasheet revision notes before finalizing component selection.

Single Bipolar Transistors Selection Notes

Select this component for designs requiring a compact NPN switching solution with moderate current handling capabilities. The SOT-23 package facilitates high-density board layouts. Evaluate the DC current gain variations across different collector currents to ensure adequate drive margins for your specific load requirements.

Single Bipolar Transistors Part Context

This component belongs to the family of small-signal bipolar junction transistors commonly used in consumer electronics and industrial control systems. It serves as a fundamental discrete semiconductor element for signal processing and power regulation tasks where space efficiency is critical.

Single Bipolar Transistors Replacement Considerations

Cross-reference with standard industry equivalents such as the 2N4401 or MMBT4401 variants from other manufacturers. Verify that substitute parts match the SOT-23 package outline and meet the 40V/600mA absolute maximum ratings.