Diodes Incorporated DMP4011SK3Q-13

Overview

DMP4011SK3Q-13 from Diodes Incorporated is a P-channel enhancement-mode MOSFET rated for -40V V_DSS, 11 mΩ R_DS(ON) @ V_GS = -10V, and -74A continuous drain current at T_C = +25°C. It is AEC-Q101 qualified, PPAP-capable, and designed for automotive DC-DC converters, power management, and LED backlighting circuits where high-current switching and low conduction loss are critical.

For engineers reviewing the DMP4011SK3Q-13 datasheet, DMP4011SK3Q-13 pinout, DMP4011SK3Q-13 application, or DMP4011SK3Q-13 equivalent, key selection criteria include its -40V breakdown rating, 11 mΩ on-resistance at -10V gate drive, TO252 (DPAK) thermal performance (R_θJC = 1.4 °C/W), AEC-Q101 qualification, and unclamped inductive switching (UIS) capability.

Technical Context

This MOSFET operates as a high-side switch in automotive power rails, leveraging its negative threshold voltage (-1.0 to -2.5 V) and robust body diode (V_SD = -0.7 to -1.0 V @ I_S = -1 A). Its gate charge profile (Q_g = 52 nC @ V_GS = -10V) supports fast turn-on/turn-off with controlled EMI in synchronous buck topologies.

The device's thermal design centers on junction-to-case conduction via the exposed drain pad of the TO252 package, enabling 3.1 W steady-state dissipation with a 1-inch² copper pad (R_θJA = 41 °C/W). Its avalanche rating (E_AS = 250 mJ, I_AS = -22 A) ensures reliability under transient overloads in automotive load-dump conditions.

Key Specifications

Pinout & Package

Package: TO252 (DPAK), surface-mount, thermally enhanced with exposed drain pad. Molded plastic housing (UL 94V-0), matte tin finish on copper leadframe, moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DMT4001SPS-13 and IPB80P04P4L-02, the DMP4011SK3Q-13 delivers optimal balance of current rating, on-resistance, and TO252 thermal performance for mid-power automotive modules-offering higher I_D than the former and smaller footprint than the latter without sacrificing AEC-Q101 compliance.

Availability

DMP4011SK3Q-13 is available at Aetrix Electronics and suitable for automotive DC-DC converters, LED backlighting systems, and body control module power switches requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for DMP4011SK3Q-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 components for automotive, industrial, and computing markets.

The DMP4011SK3Q belongs to Diodes' AEC-Q101-qualified automotive MOSFET product line, engineered specifically for high-current, high-temperature power switching in safety-critical vehicle subsystems.

FAQ

What is the maximum allowable gate-source voltage for DMP4011SK3Q-13?

The absolute maximum V_GS is ±20 V. Exceeding this risks permanent gate oxide damage. In practice, gate drive should be limited to -10 V for full enhancement and -4.5 V for logic-level operation, both well within safe margins. The device's V_GS(TH) range (-1.0 to -2.5 V) ensures turn-on stability across temperature and process variation.

Does DMP4011SK3Q-13 require a gate resistor in automotive applications?

Yes-a gate resistor (typically 6–22 Ω) is required to control dV/dt and prevent oscillation during switching. The datasheet specifies t_D(ON) and t_F test conditions using R_G = 6 Ω. Omitting it risks shoot-through in half-bridge configurations and EMI due to excessive ringing, especially with the device's 21.4 Ω intrinsic gate resistance and 222 pF Crss.

How does the TO252 package of DMP4011SK3Q-13 handle thermal dissipation in sealed automotive enclosures?

The TO252's exposed drain pad provides a low-impedance thermal path to PCB copper. With a 1-inch² 2 oz copper pad, R_θJA drops to 41 °C/W, allowing 3.1 W dissipation at T_A = 85°C. In sealed enclosures, thermal vias under the pad and internal copper planes are essential-designs must avoid conformal coating over the pad to preserve conduction efficiency.

Is DMP4011SK3Q-13 suitable for reverse polarity protection in 24 V truck systems?

No-it is rated for -40 V V_DSS, making it appropriate only for 12 V automotive systems (ISO 16750-2, load dump ≤35 V). For 24 V trucks with 58 V load dump transients, a -60 V or -80 V rated P-channel MOSFET (e.g., DMP6010SK3Q) is required to maintain sufficient voltage margin and avoid avalanche overstress.