Diodes Incorporated DMTH6005LFGQ-7

Overview

DMTH6005LFGQ from Diodes Incorporated is a 60V, 98A N-channel enhancement-mode MOSFET in PowerDI3333-8 package, qualified to AEC-Q101 and rated for +175°C operation. It delivers 4.1mΩ R_DS(ON) at V_GS = 10V and supports synchronous rectification, motor control, and DC-DC converters in automotive power systems.

For engineers reviewing the DMTH6005LFGQ datasheet, DMTH6005LFGQ pinout, DMTH6005LFGQ application, or DMTH6005LFGQ equivalent, key selection criteria include its 60V V_DSS, 175°C junction rating, 4.1mΩ on-resistance at 10V gate drive, 100% production-tested UIS robustness, and thermally optimized PowerDI3333-8 footprint.

Technical Context

This MOSFET employs trench-gate silicon technology optimized for low conduction loss and fast switching in high-temperature automotive environments. Its 2°C/W R_θJC enables efficient heat transfer from junction to exposed drain pad, supporting high-current operation without external heatsinking under constrained thermal conditions.

The device features tightly controlled V_GS(TH) (1–2.5V), low Q_g (47.5nC at 10V), and minimized C_oss (841pF), enabling stable gate drive with reduced Miller effect and predictable turn-off behavior in hard-switched topologies like buck converters and H-bridge motor drivers.

Key Specifications

Pinout & Package

Package: PowerDI3333-8 - Thermally enhanced surface-mount package with exposed drain pad, occupying only 33% board area of SO-8 while delivering superior thermal performance (R_θJC = 2°C/W).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STL220N6F7 and IXTQ50N60P, DMTH6005LFGQ offers optimal balance of automotive qualification, compact size, and mid-range current capability - ideal for space-constrained 48V systems where AEC-Q101 compliance and thermal efficiency are mandatory.

Availability

DMTH6005LFGQ is available at Aetrix Electronics and suitable for automotive engine control units, 48V mild hybrid DC-DC converters, and electric power steering motor drivers requiring stable component supply across extended product lifecycles.

Supply support for DMTH6005LFGQ 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, specializing in high-reliability components for automotive, industrial, and computing markets.

This MOSFET belongs to Diodes' PowerDI® automotive-qualified portfolio, engineered specifically for high-temperature, high-current switching in safety-critical vehicle subsystems such as powertrain and ADAS.

FAQ

Is DMTH6005LFGQ suitable for gate drive directly from a 3.3V microcontroller?

No - its V_GS(TH) min is 1V, but R_DS(ON) rises sharply below 4.5V gate drive: 7mΩ at 4.5V vs 4.1mΩ at 10V. For reliable low-loss operation, a dedicated gate driver (e.g., TC4427 or LM5113) supplying ≥6V is required. Operating at 3.3V yields excessive conduction loss and thermal risk above 10A.

What is the maximum recommended PCB copper area for the exposed drain pad?

Diodes recommends a minimum 25mm² (5mm × 5mm) 2oz copper pour connected to the drain pad via ≥8 thermal vias (0.3mm diameter, filled or plated). This achieves near-datasheet R_θJA of 63°C/W. Larger copper areas further reduce thermal resistance - up to 100mm² improves R_θJA to ~45°C/W in typical 4-layer boards.

Does DMTH6005LFGQ include integrated ESD protection on the gate?

No - the device has no built-in gate ESD protection diodes. External 10–22Ω gate series resistor and optional 12V Zener clamp (anode to source, cathode to gate) are required per AEC-Q101 layout guidelines to prevent gate oxide damage during handling or system-level ESD events.

Can DMTH6005LFGQ replace SO-8 packaged MOSFETs without PCB redesign?

No - PowerDI3333-8 has different pad layout, pin count (8 vs SO-8's 8 pins but different mapping), and thermal pad geometry. While both are 8-pin packages, the PowerDI3333-8 uses seven drain pins and one gate pin with bottom-exposed drain, requiring new footprint, stencil, and thermal via design - it is not a drop-in replacement.