SSM3K339R MOSFET: Features, Uses, and Specifications

The SSM3K339R is a compact and efficient N-channel MOSFET designed by Toshiba. It is widely used in low-voltage switching applications where efficiency, small size, and fast switching are critical. Its low ON-resistance (RDS(on)) and high-speed switching capability make it an excellent choice for modern electronic circuits.

Basic Features of SSM3K339R

• Type: N-channel MOSFET
• Package: Small surface-mount SOT-23F package
• Low ON-resistance: Ensures minimal conduction losses and higher efficiency
• High-speed switching: Suitable for fast digital and analog switching applications
• Low gate threshold voltage: Allows operation at low drive voltages, making it compatible with microcontrollers and logic-level circuits
• RoHS compliant: Environmentally friendly and lead-free design

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⚡ Applications and Uses of SSM3K339R

The SSM3K339R MOSFET is commonly used in:

• ✅ DC-DC converters – for efficient power switching
• ✅ Load switching – controlling power to modules and sensors
• ✅ Power management circuits – used in portable and battery-operated devices
• ✅ Motor drivers – small DC motors and actuators
• ✅ Relay replacement – for solid-state switching in compact designs
• ✅ Signal switching – in logic-level and analog circuits

Its ability to handle reasonable current and provide fast response makes it ideal for consumer electronics, embedded systems, and IoT devices.

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Specifications of SSM3K339R

Parameter                           Value

Type                                     N-channel MOSFET

Drain-Source Voltage (VDS)           30V

Continuous Drain Current (ID)      ~6A (at VGS = 10V, Ta = 25°C)

Gate Threshold Voltage (VGS(th))  1V – 2.5V

RDS(on) (typ.)                                      19 mΩ (at VGS = 10V) / 28 mΩ (at VGS = 4.5V)

Package                                                 SOT-23F

Power Dissipation (Pd)                     2W (at Ta = 25°C)

Operating Temperature                  -55°C to +150°C

(Note: Always refer to the latest Toshiba datasheet for precise values.)

Summary

The SSM3K339R is a high-performance N-channel MOSFET designed for power switching, load driving, and efficient DC-DC conversion. With its low ON-resistance, fast switching, and small package size, it is highly suitable for portable electronics, IoT devices, and embedded applications.

If you are working on power-efficient designs or need a compact MOSFET solution, the SSM3K339R is an excellent choice.

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About The Author

Aniruddh Kumar Sharma

I am an electronics enthusiast.

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