Diodes Incorporated DMP2004WK-7

Overview

DMP2004WK from Diodes Incorporated is a P-channel enhancement-mode MOSFET in SOT323 package, rated for -20 V V_DSS, -400 mA continuous drain current, and 0.7–1.1 Ω R_DS(ON) at V_GS = -4.5 V. It features ultra-low gate threshold voltage (V_GS(th) < -1.0 V), ESD-protected gate, and AEC-Q101 qualification-used in compact load switching and power management circuits in automotive body electronics and portable USB-powered devices.

For engineers reviewing the DMP2004WK datasheet, DMP2004WK pinout, DMP2004WK application, or DMP2004WK equivalent, key selection criteria include its sub-1V turn-on capability, low 175 pF C_iss, 250 mW power dissipation on FR-4, and compatibility with 1.8 V logic-level control in space-constrained DC-DC bias rails and LED driver enable paths.

Technical Context

This device operates as a single P-channel switch with source-connected-to-rail topology, enabling high-side load control without level-shifting circuitry. Its V_GS(th) range of -0.5 V to -1.0 V ensures reliable conduction under 1.8 V microcontroller GPIO drive, while the integrated gate protection diode and ESD-hardened structure support robust operation in noisy automotive environments.

The MOSFET exhibits low dynamic capacitance (C_iss = 175 pF, C_oss = 30 pF) and fast switching speed, minimizing transition losses in PWM-driven applications. Thermal resistance of 500 °C/W (R_θJA) reflects its SOT323 footprint limitation, requiring careful PCB copper area design for sustained >200 mA operation.

Key Specifications

Pinout & Package

SOT323 package: 3-pin surface-mount plastic case, 2.1 mm × 1.3 mm × 0.9 mm profile, matte tin-plated Alloy 42 leadframe, moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DMG2305UVT-7 and AO3401, DMP2004WK offers optimal balance of ultra-low threshold, compact SOT323 size, and AEC-Q101 compliance-making it preferred for space-limited automotive and portable designs where 400 mA switching and 1.8 V logic compatibility are critical.

Availability

DMP2004WK is available at Aetrix Electronics and suitable for automotive interior lighting, USB-C port power switching, and industrial sensor bias supply requiring stable component supply across production lifecycles.

Supply support for DMP2004WK 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 and manufacturing operations across Asia and the Americas.

The DMP2004WK belongs to Diodes' AEC-Q101-qualified small-signal MOSFET product line, engineered specifically for high-reliability, low-voltage logic-level switching in automotive body electronics and portable power management.

FAQ

What is the maximum continuous drain current for DMP2004WK at 85°C ambient?

At T_A = 85°C, derated current is approximately 260 mA due to thermal limitations. With 25 mm² copper pour on FR-4, junction temperature remains within -55°C to +150°C range. The 400 mA rating applies only at T_A = 25°C with minimal PCB copper; actual design must verify thermal margin using R_θJA = 500°C/W and power loss calculation.

Does DMP2004WK require an external gate resistor for typical switching applications?

No external gate resistor is required for switching frequencies below 500 kHz. The device's low C_iss (175 pF) and gate charge (Q_g ≈ 2.1 nC, inferred from C_iss and V_GS swing) allow direct drive from standard MCU GPIO pins. A 10 Ω series resistor may be added only to damp ringing in high-noise environments or >1 MHz operation.

Is the SOT323 package of DMP2004WK compatible with reflow soldering per J-STD-020?

Yes-the SOT323 package is rated for moisture sensitivity level 1 and fully compatible with standard Pb-free reflow profiles (peak 260°C). The matte tin finish meets MIL-STD-202 Method 208 solderability requirements, and the UL 94V-0 molding compound ensures process stability during convection and vapor-phase reflow.

Can DMP2004WK be used in reverse polarity protection circuits?

Yes-it is commonly deployed in reverse polarity protection at the input of 12 V automotive modules. With V_DSS = -20 V and low R_DS(ON), it conducts forward when polarity is correct and blocks reverse current. Its integrated body diode (V_SD = -0.5 to -1.2 V) must be considered in layout; orientation must place source at input and drain at system rail to ensure proper blocking behavior.