Diodes Incorporated DMNH6021SK3-13

Overview

DMNH6021SK3-13 from Diodes Incorporated is a 60V, 50A N-channel enhancement-mode MOSFET in TO252 (DPAK) package, featuring 23 mΩ R_DS(ON) at V_GS = 10 V and rated for continuous operation up to +175°C junction temperature. It delivers low conduction loss and fast switching (t_F = 5.4 ns, Q_g = 20.1 nC), making it suitable for high-efficiency DC-DC converters and motor drive half-bridges.

For engineers reviewing the DMNH6021SK3-13 datasheet, DMNH6021SK3-13 pinout, DMNH6021SK3-13 application, or DMNH6021SK3-13 equivalent, key selection criteria include its AEC-Q101 qualification, 100% UIS-tested ruggedness, thermal resistance R_θJC = 1.8°C/W, and dual gate-drive compatibility (V_GS(TH) = 1–3 V, V_GSS = ±20 V).

Technical Context

This MOSFET employs planar trench-gate technology optimized for low R_DS(ON) while preserving fast turn-off (t_D(OFF) = 14.2 ns) and low Crss (69 pF), enabling high-frequency synchronous rectification and PWM motor control. Its body diode exhibits t_RR = 21.2 ns and Q_RR = 15.2 nC under 100 A/μs di/dt, supporting efficient freewheeling in inductive loads.

The device's thermal design centers on the exposed drain pad - thermally coupled to PCB copper - delivering R_θJC = 1.8°C/W and enabling 3.7 W power dissipation with proper board layout. Its +175°C rating and -55°C to +175°C operating range support under-hood automotive and industrial power stages where ambient temperatures exceed 125°C.

Key Specifications

Pinout & Package

Package: TO252 (DPAK), surface-mount, with exposed drain pad for thermal and electrical connection. Molded green compound (UL 94V-0), 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 DMNH6021SK3-13, the DMNH6021SK3Q adds automotive compliance overhead without performance gain, while IPB027N06L3 trades ruggedness and temperature capability for lower R_DS(ON) - making the original optimal for balanced high-temp, high-reliability 48 V power switching.

Availability

DMNH6021SK3-13 is available at Aetrix Electronics and suitable for automotive engine control units, industrial motor drives, and server power supply designs requiring stable component supply, extended temperature operation, and AEC-Q101-aligned quality assurance.

Supply support for DMNH6021SK3-13 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, specializing in high-reliability power management, signal integrity, and protection solutions for automotive, industrial, and computing markets.

This MOSFET belongs to Diodes' Automotive-Qualified PowerMOS™ family, engineered specifically for high-temperature, high-ruggedness power switching in safety-critical and mission-critical systems.

FAQ

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

The DMNH6021SK3-13 supports 35 A continuous drain current at T_C = +100°C, per the Absolute Maximum Ratings table. This derating reflects thermal limits imposed by junction-to-case resistance (1.8°C/W) and safe operating area constraints under sustained conduction.

Does this MOSFET require a gate resistor for stability in high-speed switching?

Yes - a 4.7 Ω gate resistor is used in the datasheet's switching time test conditions (t_D(ON), t_R). This value damps ringing caused by gate loop inductance and Crss feedback; omitting it risks oscillation and gate overvoltage exceeding ±20 V rating.

Can the body diode be used for continuous freewheeling in a buck converter?

Yes - the body diode is rated for 40 A continuous forward current (I_S) and exhibits V_SD = 0.75–1.2 V at 20 A. However, its reverse recovery charge (Q_RR = 15.2 nC) and time (t_RR = 21.2 ns) must be accounted for in synchronous rectifier timing to avoid shoot-through.

Is the TO252 package lead (pin 2) electrically connected to the drain?

Yes - in the TO252 (DPAK) package, the center pin (G) is isolated; the left and right pins (S and D) plus the large exposed copper pad beneath the package are all internally connected to the drain terminal. The datasheet pinout diagram confirms D–S–D configuration with drain on both outer leads and the pad.