Diodes Incorporated DMN2041UFDB-7

Overview

DMN2041UFDB from Diodes Incorporated is a dual N-channel enhancement-mode MOSFET in a U-DFN2020-6 (Type B) package, rated for 20V V_DSS, 40mΩ R_DS(ON) @ 4.5V V_GS, and 4.7A continuous drain current at +25°C. It integrates two matched low-R_DS(ON) switches with ESD-protected gates and low input capacitance (713pF), enabling compact, high-efficiency load switching in portable power adaptors and battery-powered systems.

For engineers reviewing the DMN2041UFDB datasheet, DMN2041UFDB pinout, DMN2041UFDB application, or DMN2041UFDB equivalent, key selection criteria include its dual-channel layout, 0.6mm max height for space-constrained PCBs, gate threshold voltage range (0.35–1.4V), body diode forward voltage (0.75–1.2V), and thermal resistance (92°C/W junction-to-ambient).

Technical Context

This dual MOSFET uses planar silicon technology with integrated gate protection diodes on both channels, supporting independent control of two N-channel paths. Its low R_DS(ON) at 2.5V V_GS (65mΩ) enables operation from low-voltage logic rails, while fast switching (t_R = 15.9ns, t_F = 2.6ns) minimizes conduction and transition losses in DC-DC load switching.

The device features symmetric internal structure: Q1 and Q2 share identical electrical specs and thermal coupling within the same die. Its U-DFN2020-6 (Type B) package provides exposed drain pads for both channels to enhance thermal dissipation and reduce parasitic inductance-critical for stable high-frequency power management.

Key Specifications

Pinout & Package

Package: U-DFN2020-6 (Type B), 2.0mm × 2.0mm × 0.6mm, thermally enhanced with dual exposed drain pads (D1 and D2). Molded green compound, NiPdAu-plated terminals, moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual N-channel load switching applications.

Compared with DMN2041UFDB, DMN2045UFDB delivers lower conduction loss in identical form factor, while Si2302DDS demands additional components and layout effort to achieve dual functionality-making DMN2041UFDB optimal for new designs prioritizing integration, reliability, and space efficiency.

Availability

DMN2041UFDB is available at Aetrix Electronics and suitable for portable power adaptors, USB-C power delivery modules, and battery protection circuits requiring stable component supply across multi-year production cycles.

Supply support for DMN2041UFDB 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 industrial, computing, and consumer markets.

DMN2041UFDB belongs to Diodes' U-DFN logic-level MOSFET product line, engineered specifically for space-constrained, high-efficiency load switching in battery-powered and USB-powered systems where low gate drive voltage and minimal footprint are critical.

FAQ

What is the maximum allowable gate-source voltage for DMN2041UFDB?

The absolute maximum gate-source voltage (V_GS) is ±12V per the datasheet's Maximum Ratings table. Exceeding this risks permanent gate oxide damage. For reliable operation, keep V_GS between 0.35V and 4.5V during normal switching-higher than 4.5V yields diminishing R_DS(ON) improvement but increases gate charge and driver stress.

Can DMN2041UFDB be used in a back-to-back configuration for AC blocking?

Yes-its dual N-channel structure supports back-to-back connection (D1–S2 and S1–D2 tied) to block bidirectional current flow, commonly used in battery protection ICs. The matched R_DS(ON) ensures symmetrical on-resistance, and the 20V V_DSS rating supports up to ±10V differential across the pair under blocking conditions.

Does DMN2041UFDB require external gate resistors for EMI suppression?

While not mandatory, a 5–10Ω series gate resistor is recommended to dampen ringing caused by the 713pF C_iss interacting with PCB trace inductance. This reduces electromagnetic emissions during 15.9ns rise time transitions and prevents false triggering in noise-sensitive environments like medical or audio applications.

How does the U-DFN2020-6 (Type B) package affect PCB layout for thermal performance?

The package requires soldering both D1 and D2 pads to large copper planes (≥100mm² each) with ≥4 thermal vias per pad (0.3mm diameter, filled or plated) to achieve the rated 92°C/W R_θJA. Isolating the thermal pads or omitting vias raises junction temperature by >30°C at 2W dissipation, risking premature thermal shutdown or parametric drift.