Diodes Incorporated DMTH4004LK3-13

Overview

DMTH4004LK3-13 from Diodes Incorporated is a 40V, 100A N-channel enhancement-mode MOSFET in TO252 (DPAK) package, rated for 175°C operation and qualified to AEC-Q101. It delivers 3 mΩ R_DS(ON) at V_GS = 10V and 5 mΩ at 4.5V, with 83 nC total gate charge and 0.8°C/W R_θJC, enabling high-efficiency power switching in automotive engine management and DC-DC converters.

For engineers reviewing the DMTH4004LK3-13 datasheet, DMTH4004LK3-13 pinout, DMTH4004LK3-13 application, or DMTH4004LK3-13 equivalent, key selection criteria include its 175°C junction rating, 100% unclamped inductive switching capability, low Q_g/Q_gd ratio, AEC-Q101 qualification, and thermal performance under high-current pulsed loads.

Technical Context

This MOSFET employs a trench-gate silicon process optimized for low R_DS(ON) while preserving fast switching dynamics. Its 0.7 Ω gate resistance, 74 pF Crss, and 13.2 ns rise time support efficient hard-switching in synchronous buck stages up to 300 kHz.

The device integrates a robust body diode with 48 ns reverse recovery time and 72 nC Q_RR, enabling reliable freewheeling in high-di/dt environments such as automotive solenoid drivers and motor phase-legs without external Schottky supplementation.

Key Specifications

Pinout & Package

Package: TO252-3L (DPAK), surface-mount with exposed drain pad for thermal conduction. Molded green compound, UL 94V-0 rated, matte tin-plated copper leadframe.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IXTP110N04T4 and STL220N4LF8AG, DMTH4004LK3-13 uniquely balances AEC-Q101 compliance, industry-leading 0.8°C/W thermal resistance, and 100% UIS validation - making it optimal for thermally demanding, safety-critical automotive power stages where reliability trumps size or cost.

Availability

DMTH4004LK3-13 is available at Aetrix Electronics and suitable for engine management systems, body control electronics, and DC-DC converters requiring stable component supply, long-term automotive-grade availability, and traceable sourcing.

Supply support for DMTH4004LK3-13 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, manufacturing, and sales operations across Asia, Europe, and North America.

This MOSFET belongs to Diodes' Automotive Power Solutions product line, engineered specifically for high-reliability, high-temperature power switching in engine control units, battery management, and chassis electronics.

FAQ

What is the maximum continuous drain current at 100°C case temperature?

The DMTH4004LK3-13 supports 100 A continuous drain current at T_C = +100°C, as specified in the Absolute Maximum Ratings table. This value is not derated from the 25°C rating because the device is package-limited and thermally designed to sustain full current at elevated case temperatures when mounted on adequate copper area.

Is the body diode suitable for synchronous rectification in a buck converter?

No - the integrated body diode has 48 ns reverse recovery time and 72 nC Q_RR, which causes significant switching loss and voltage overshoot in high-frequency synchronous rectification. It is intended for freewheeling only; external synchronous FETs or Schottky diodes are required for true synchronous operation above 100 kHz.

Does the TO252-3L package require solder paste stencil optimization for the exposed drain pad?

Yes - the exposed drain pad must be printed with ≥70% solder paste coverage using a 0.15 mm thick stencil and 75% open area pattern. Thermal vias (≥6×0.3 mm diameter, filled or capped) are required beneath the pad and connected to inner-layer ground planes to achieve the specified 0.8°C/W R_θJC.

How does the 175°C rating impact PCB layout versus standard 150°C MOSFETs?

The 175°C rating allows uninterrupted operation at higher ambient temperatures, but does not relax layout requirements. The TO252-3L still demands ≥25 mm × 25 mm 2 oz copper on the primary side, minimum 0.5 mm clearance to other components, and avoidance of conformal coating over the drain pad - all per AP02001 and AP02002 land patterns.