MMST6427-7

Single Bipolar Transistors Overview

The MMST6427-7 is an NPN surface mount Darlington transistor manufactured by Diodes Incorporated. It features a 40V collector-emitter voltage (VCEO) and supports a continuous collector current of 500mA. The device utilizes epitaxial planar die construction within an ultra-small SOT-323 package, offering a maximum power dissipation of 200mW. Its DC current gain ranges from 10,000 to 200,000 depending on the operating current. Designed for low-power amplification and switching applications, it operates across a temperature range of -55°C to +150°C.

Single Bipolar Transistors Feature Summary

• Epitaxial planar die construction designed for high reliability in compact designs
• Ultra-small SOT-323 surface mount package optimized for space-constrained PCB layouts
• High current gain suitable for efficient low-power amplification and switching tasks

Single Bipolar Transistors Applications

• Low-power signal amplification circuits
• General-purpose electronic switching applications
• Battery-powered portable devices requiring minimal footprint

Single Bipolar Transistors Procurement Notes

Verify that the specific ordering suffix matches your required packaging format, as standard reels may differ from cut tape or other bulk options. Confirm RoHS compliance status directly with the supplier if environmental regulations are critical to your project specifications. Ensure the component is sourced through authorized channels to guarantee authenticity and adherence to the manufacturer's quality standards.

Single Bipolar Transistors Selection Notes

Select this component when a high-gain NPN transistor is required in a very small form factor. The SOT-323 package makes it ideal for dense surface-mount assemblies where traditional packages cannot fit. Consider its relatively high saturation voltage compared to single transistors when designing low-voltage drop switching stages.

Single Bipolar Transistors Part Context

This part belongs to the MMST series of surface mount Darlington transistors produced by Diodes Incorporated. It shares the same core electrical characteristics and physical package dimensions as the MMBT6427 but is specifically configured for surface-mount technology (SMT) manufacturing processes.

Single Bipolar Transistors Replacement Considerations

The MMBT6427 serves as a direct functional equivalent with identical pinout and electrical ratings. Other compatible replacements include the MMBTA28 and MMST6427-7-F variants, provided they meet the specific voltage and current requirements of the target circuit design.

Single Bipolar Transistors FAQ

What is the maximum continuous collector current rating?

The maximum continuous collector current (IC) is rated at 500 mA.

Does the device support lead-free soldering processes?

Yes, the MMST6427 is lead-free, RoHS compliant, and halogen and antimony free.

What is the typical DC current gain at 100mA?

At a collector current of 100mA and VCE of 5.0V, the DC current gain (hFE) typically ranges between 14,000 and 140,000.