Diodes Incorporated DMN34D0U-13

Overview

DMN34D0U-13 from Diodes Incorporated is an N-channel enhancement-mode MOSFET in SOT23 package, rated for 25V V_DSS, 4Ω R_DS(ON) @ V_GS = 4.5V, and 0.3A continuous drain current at +25°C. It features low gate threshold (0.7–1.1V), ESD-protected gate, and fast switching (t_D(ON) = 3.3ns), enabling use in compact DC-DC converters and battery-powered load switching.

For engineers reviewing the DMN34D0U-13 datasheet, DMN34D0U-13 pinout, DMN34D0U-13 application, or DMN34D0U-13 equivalent, key selection criteria include verified R_DS(ON) at low V_GS (2.7V/5Ω), thermal resistance (R_θJA = 222°C/W with copper pad), and SOT23-compatible layout for space-constrained power management.

Technical Context

This MOSFET operates as a low-voltage, low-current discrete switch optimized for logic-level drive. Its 0.7–1.1V gate threshold enables direct interface with 1.8V/2.5V/3.3V microcontrollers without level-shifting, while its 24pF input capacitance and 0.4nC total gate charge support efficient high-frequency switching up to several MHz in buck converter topologies.

The device integrates an ESD-protected gate structure and exhibits stable R_DS(ON) over temperature (±15% from −55°C to +150°C at V_GS = 4.5V), with body diode forward voltage of 0.7–1.2V at 0.29A - suitable for synchronous rectification and bidirectional control in low-power systems.

Key Specifications

Pinout & Package

Package: SOT23 - surface-mount, 3-pin plastic package (0.915mm pitch, 2.40mm × 1.30mm footprint), UL 94V-0 rated, moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DMN34D0U-13, DMN3025LSD-13 offers dual-channel integration and lower R_DS(ON) but demands more PCB area and layout revision, while AO3400 delivers higher current capacity at the expense of 30× higher Q_g, making it unsuitable for sub-1MHz, low-quiescent-current designs.

Availability

DMN34D0U-13 is available at Aetrix Electronics and suitable for DC-DC converters, battery-operated portable electronics, and solid-state relay modules requiring stable component supply across production lifecycles.

Supply support for DMN34D0U-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 semiconductor manufacturer specializing in discrete, analog, and mixed-signal solutions for power management, signal integrity, and connectivity applications.

The DMN34D0U belongs to Diodes' logic-level MOSFET product line, engineered for ultra-low-voltage gate drive compatibility and minimal conduction loss in space- and power-constrained portable and IoT devices.

FAQ

What is the maximum safe operating junction temperature for DMN34D0U-13?

The absolute maximum junction temperature is +150°C, with thermal derating beginning at +70°C ambient when mounted on a 1-inch square copper pad (R_θJA = 222°C/W). At +70°C ambient, the device supports 0.24A continuous drain current before reaching TJ = 150°C under steady-state conditions.

Does DMN34D0U-13 require external gate resistors for typical 3.3V MCU drive?

No external gate resistor is required for basic on/off switching with 3.3V microcontrollers due to its low 0.4nC gate charge and 24pF input capacitance. However, a 10–47Ω series resistor is recommended to dampen ringing during high-speed PWM operation (>1MHz) or when driving long PCB traces.

Can DMN34D0U-13 be used in reverse-biased (source-to-drain) conduction mode?

Yes - its intrinsic body diode supports continuous 0.56A forward current with 0.7–1.2V drop at 0.29A. This enables bidirectional current flow in H-bridge half-bridges and relay-replacement circuits, though conduction loss is higher than channel-based forward operation.

Is DMN34D0U-13 qualified for automotive applications per AEC-Q101?

No - DMN34D0U-13 is not AEC-Q101 qualified. Diodes offers automotive-grade equivalents (e.g., DMN34D0UQ-13) with PPAP documentation, IATF 16949 manufacturing, and extended temperature validation; contact Diodes sales for qualified variants.