Diodes Incorporated DMT12H065LFDF-13

Overview

DMT12H065LFDF-13 from Diodes Incorporated is a 115V N-channel enhancement-mode MOSFET in U-DFN2020-6 (Type F) package, with R_DS(ON) = 65 mΩ @ V_GS = 10 V, I_D = 4.3 A at T_A = +25°C, and 100% production-tested UIS robustness-designed for DC-DC primary switching and low-profile load switching in space-constrained power converters.

For engineers reviewing the DMT12H065LFDF-13 datasheet, DMT12H065LFDF-13 pinout, DMT12H065LFDF-13 application, or DMT12H065LFDF-13 equivalent, key selection criteria include its 65 mΩ on-resistance at 10 V gate drive, 124 °C/W R_θJA on standard FR-4, 0.6 mm profile, and verified unclamped inductive switching performance under 0.3 mH conditions.

Technical Context

This MOSFET employs a trench-gate silicon process optimized for low R_DS(ON) while preserving fast switching characteristics: t_D(ON) = 2.1 ns, t_F = 3.6 ns, and Q_g = 5.5 nC at V_DS = 50 V. Its gate threshold voltage (V_GS(TH) = 0.6–2.2 V) enables compatibility with 3.3 V and 4.5 V logic-level drivers.

The device integrates a body diode with V_SD = 0.8–1.3 V at I_S = 2.4 A and t_RR = 101 ns, supporting synchronous rectification and flyback recovery. Thermal design is enabled by R_θJC = 13 °C/W and validated junction temperature range of –55°C to +150°C.

Key Specifications

Pinout & Package

U-DFN2020-6 (Type F) is a 2.0 × 2.0 mm, 0.6 mm profile, leadless surface-mount package with exposed thermal pad (Pin 6). Molded green compound meets UL 94V-0 and RoHS 3 compliance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DMT12H065LFDF-13, DMN10H065LFD-7 offers better conduction efficiency below 24 V but sacrifices 15 V surge headroom, while DMT6009LSD trades miniaturization and UIS assurance for ease of hand-soldering and thermal derating flexibility.

Availability

DMT12H065LFDF-13 is available at Aetrix Electronics and suitable for DC-DC primary switching, USB-C load switching, and battery protection circuits requiring stable component supply across industrial, portable, and automotive-qualified production programs.

Supply support for DMT12H065LFDF-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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.

This MOSFET belongs to Diodes' "PowerMOS" portfolio, engineered specifically for high-efficiency, low-profile power conversion in consumer, computing, and industrial applications where R_DS(ON), switching speed, and package size are co-optimized.

FAQ

What is the maximum safe operating junction temperature for DMT12H065LFDF-13?

The absolute maximum junction temperature is +150°C per the datasheet's TJ, TSTG specification. Operation above this limit risks permanent parametric shift or catastrophic failure. Derating curves in Figure 5 and Figure 7 confirm R_DS(ON) increases linearly beyond 125°C, so thermal design should target ≤125°C under worst-case ambient and power dissipation conditions.

Can DMT12H065LFDF-13 be used with 3.3 V logic-level gate drive?

Yes-its V_GS(TH) range (0.6–2.2 V) and R_DS(ON) = 70 mΩ @ V_GS = 4.5 V and 150 mΩ @ V_GS = 3.0 V allow functional switching at 3.3 V, though conduction loss rises significantly. For optimal efficiency, pair with a gate driver or level shifter to ensure ≥4.5 V drive during active periods.

Is the thermal pad (Pin 6) electrically isolated or connected to the drain?

The exposed thermal pad (Pin 6) is electrically connected to the drain terminal, as confirmed by the Equivalent Circuit diagram and mechanical drawings. It must be soldered to a PCB copper pour tied to the drain net-not left floating or grounded-to ensure both thermal performance and electrical safety.

Does DMT12H065LFDF-13 have avalanche energy rating, and how is it validated?

Yes-E_AS = 2.4 mJ at I_AS = 4 A and L = 0.3 mH, with 100% production UIS testing per datasheet Note 5. This validation ensures each unit survives single-pulse inductive energy events typical in DC-DC flyback and boost converters without parameter degradation or bond-wire failure.