SSFQ3812

Overview

The SSFQ3812 is a dual N-channel MOSFET manufactured by Good-Ark Semiconductor, designed for high-efficiency switching applications. It features a drain-source voltage (Vdss) of 30 V and a continuous drain current (Id) of 7.5 A at 25°C case temperature. The device achieves a maximum on-resistance (Rds(on)) of 20 mΩ at Vgs=10V and 23 mΩ at Vgs=4.5V. Key electrical parameters include a gate threshold voltage (Vgs(th)) ranging from 1.2 V to 4.1 V, a total gate charge (Qg) of 15.8 nC at Vgs=10V, and an input capacitance (Ciss) of 345 pF. The component operates within a junction temperature range of -55°C to +150°C and utilizes an SOP-8 surface-mount package.

Feature Summary

• Dual configuration with fast switching and reverse body recovery capabilities
• Advanced MOSFET process technology ensuring low on-resistance and low gate charge
• High cell density design for improved efficiency and reliability

Applications

• Motherboard (MB), VGA, and Vcore power delivery circuits
• Load switch implementations
• Switching mode power supplies (SMPS)

Procurement Notes

Verify the specific datasheet version against the manufacturer's official documentation before finalizing specifications. Confirm that the SOP-8 package dimensions and pinout align with the target PCB footprint requirements. Ensure thermal management strategies account for the specified junction-to-ambient thermal resistance values under actual operating conditions.

Selection Notes

Select this component for designs requiring a compact dual-N channel solution with low conduction losses. The low gate charge facilitates faster switching speeds, reducing dynamic losses in high-frequency converters. Verify that the 30 V breakdown voltage provides sufficient margin for the intended circuit rail voltages and transient spikes.

Part Context

This part belongs to the discrete semiconductor category, specifically within the single FET/MOSFET segment. It is classified as a metal-oxide semiconductor field-effect transistor utilizing enhancement mode operation. The device is intended for general-purpose switching applications where space constraints and power efficiency are critical design factors.

Replacement Considerations

Consult official substitution lists or cross-reference databases for verified equivalent parts. Ensure any replacement maintains identical pin configurations, voltage ratings, and thermal characteristics to guarantee compatibility without redesigning the host circuit board.

FAQ

What is the maximum continuous drain current rating?

The maximum continuous drain current is 7.5 A when measured at a case temperature of 25°C.

Does the device include integrated diodes?

Yes, the datasheet specifies Drain-Source Diode Characteristics, indicating the presence of intrinsic body diodes associated with the MOSFET structure.

What is the recommended gate drive voltage for optimal performance?

The on-resistance is specified at Vgs=10V and Vgs=4.5V, with lower resistance achieved at the higher voltage, suggesting 10V is preferred for minimal conduction loss.