Diodes Incorporated DMT4011LFG-7

Overview

DMT4011LFG-7 from Diodes Incorporated is a 40V N-channel enhancement-mode MOSFET in PowerDI3333-8 package, with R_DS(ON) = 11.5 mΩ @ V_GS = 10 V, 30 A continuous drain current at T_C = +25°C, and 100% production-tested UIS robustness. It serves as a high-efficiency synchronous rectifier or main switch in DC-DC converters for notebook adapters and industrial power supplies.

For engineers reviewing the DMT4011LFG-7 datasheet, DMT4011LFG-7 pinout, DMT4011LFG-7 application, or DMT4011LFG-7 equivalent, key selection criteria include R_DS(ON) at 4.5 V (17.8 mΩ), Q_gd × R_DS(ON) figure-of-merit, thermal resistance R_θJC = 8 °C/W, and PowerDI3333-8 footprint compatibility with high-density PCB layouts.

Technical Context

This MOSFET employs trench-gate silicon technology optimized for low conduction loss and fast switching in buck converter topologies. Its gate threshold voltage (1–3 V) enables direct drive from 3.3 V and 5 V controllers, while its 30.6 pF reverse transfer capacitance (Crss) supports stable operation under high dV/dt conditions.

The device integrates a robust body diode with t_RR = 9.8 ns and Q_RR = 5.1 nC, enabling efficient synchronous rectification without external Schottky diodes. Its 8 °C/W junction-to-case thermal resistance allows direct thermal coupling to copper planes in compact 2-layer board designs.

Key Specifications

Pinout & Package

Package: PowerDI3333-8 - thermally enhanced 8-pin surface-mount package with exposed drain paddle, 0.8 mm profile, and 3.3 mm × 3.3 mm footprint optimized for PCB heat spreading.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar N-channel power MOSFET applications.

Compared with DMT4011LFG-7, DMT4011LPS-7 offers superior thermal management at the cost of board area, while SI7157DP-T1-GE3 trades off ruggedness and package efficiency for legacy footprint compatibility - neither matches the PowerDI3333-8's balance of density, UIS reliability, and 4.5 V drive capability.

Availability

DMT4011LFG-7 is available at Aetrix Electronics and suitable for laptop AC-DC adapters, industrial 24 V DC-DC converters, and LED backlight drivers requiring stable component supply across multi-year production cycles.

Supply support for DMT4011LFG-7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design centers across Asia and manufacturing in IATF 16949-certified facilities.

The PowerDI3333-8 MOSFET product line targets high-density, high-efficiency power conversion in space-constrained applications where thermal performance and logic-level drive are critical - including portable computing, industrial SMPS, and automotive infotainment power rails.

FAQ

What is the maximum safe operating temperature for DMT4011LFG-7?

The device has a rated junction temperature range of –55°C to +150°C. Under continuous DC operation at T_C = +25°C, it supports 30 A drain current. Derating begins above +25°C case temperature per the SOA curve in Figure 12; at T_C = +70°C, max continuous current drops to 24 A. Thermal design must ensure R_θJC path to copper plane remains ≤8 °C/W.

Can DMT4011LFG-7 be driven directly by a 3.3 V microcontroller GPIO?

No - its gate threshold voltage (1–3 V) is insufficient for reliable turn-on at 3.3 V due to process variation and temperature drift. At V_GS = 3.3 V, R_DS(ON) rises sharply above 50 mΩ (per Figure 3), causing excessive conduction loss. A dedicated gate driver or level shifter delivering ≥4.5 V is required for full enhancement.

Does DMT4011LFG-7 have an integrated ESD protection diode on the gate?

Yes - the datasheet specifies ±100 nA gate leakage at V_GS = ±16 V, confirming built-in gate oxide protection. However, this is not a robust ESD clamp; external 10 kΩ series gate resistor and 12 V Zener to source are recommended for systems exposed to >2 kV HBM events per IEC 61000-4-2.

Is the PowerDI3333-8 package lead-free and RoHS compliant?

Yes - DMT4011LFG-7 uses matte tin annealed over copper leadframe and halogen-free green molding compound. It complies fully with EU RoHS 2015/863/EU (RoHS 3), contains <900 ppm bromine and chlorine combined, and <1000 ppm antimony, certified per Diodes' quality definitions.