Diodes Incorporated DMN3050S-7

Overview

DMN3050S-7 from Diodes Incorporated is an N-channel enhancement-mode MOSFET in SOT-23 package, rated for 30 V V_DSS, 5.2 A continuous drain current at 25°C, and 35 mΩ R_DS(on) at V_GS = 10 V. It features low gate threshold (1–3 V), fast switching, and AEC-Q101 qualification-used in automotive load switching and portable power management circuits.

For engineers reviewing the DMN3050S-7 datasheet, DMN3050S-7 pinout, DMN3050S-7 application, or DMN3050S-7 equivalent, key selection criteria include its 4.5 V drive capability (50 mΩ R_DS(on)), thermal resistance of 90°C/W, and SOT-23 footprint compatibility with space-constrained DC-DC and battery protection designs.

Technical Context

This MOSFET operates in enhancement mode with a typical gate threshold voltage of 1.5 V, enabling direct interface with 3.3 V and 5 V logic controllers. Its low input capacitance (C_iss = 390 pF) and fast switching support high-frequency PWM control in compact power stages.

The device integrates a body diode with forward voltage of 0.7 V at 1 A, supporting synchronous rectification and reverse-current blocking in buck converters and OR-ing circuits. Thermal performance is validated under FR-4 PCB mounting per JESD51-2, with R_θJA = 90°C/W and operation up to +150°C junction temperature.

Key Specifications

Pinout & Package

Package: SOT-23 (JEDEC TO-236AB), surface-mount, 3-terminal plastic case with matte tin-plated copper leadframe; moisture sensitivity level 1 per J-STD-020D.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DMN3050S-7, DMN3025LSD-13 offers lower conduction loss but demands stronger gate drive, while AO3400 trades AEC-Q101 compliance and tighter threshold control for lower unit cost in non-automotive applications.

Availability

DMN3050S-7 is available at Aetrix Electronics and suitable for automotive body electronics, USB-C power delivery systems, industrial sensor node power gating, and white LED driver circuits requiring stable component supply across production lifecycles.

Supply support for DMN3050S-7 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, manufacturing, and sales operations across Asia, Europe, and North America.

The DMN3050S-7 belongs to Diodes' AEC-Q101-qualified power MOSFET product line, engineered for robust, low-R_DS(on) switching in space-constrained automotive and industrial power management applications.

FAQ

What is the maximum pulsed drain current rating for DMN3050S-7?

The DMN3050S-7 is rated for 20 A pulsed drain current (I_DM) under short-duration pulse conditions that minimize self-heating. This rating assumes proper PCB thermal design and is not sustainable continuously; derating applies above 70°C ambient per the datasheet's ID vs. TA curve.

Is DMN3050S-7 suitable for high-frequency switching above 1 MHz?

Yes-its 390 pF input capacitance and 45 pF reverse transfer capacitance support efficient operation up to ~2 MHz in well-designed gate-drive layouts. However, actual achievable frequency depends on gate resistor selection, PCB parasitics, and load characteristics; SPICE simulation using Diodes' official model is recommended for critical timing validation.

Does DMN3050S-7 have integrated ESD protection?

No integrated ESD protection structure is specified in DS31503 Rev. 3-2. The device exhibits ±100 nA gate leakage at ±20 V, indicating standard MOSFET gate oxide robustness. External TVS or RC filtering is advised for board-level ESD immunity in harsh environments like automotive or industrial installations.

Can DMN3050S-7 be used in linear (analog) regulation mode?

It is not recommended for sustained linear operation. With a thermal resistance of 90°C/W and only 1.4 W total power dissipation limit, even modest voltage drops (e.g., 5 V × 1 A = 5 W) exceed safe operating area limits. Use only in saturated switching mode with appropriate SOA derating per Figure 9 transient thermal curves.