STMicroelectronics STW43N60DM2

Overview

STW43N60DM2 from STMicroelectronics is a high-voltage N-channel Power MOSFET with 600 V V_(BR)DSS, 0.085 Ω typ. R_DS(on), 34 A continuous drain current, and fast-recovery body diode (t_rr = 120 ns @ T_j = 25 °C). It is engineered for ZVS phase-shift converters and full-bridge topologies requiring low Q_rr (0.6 µC) and high dv/dt ruggedness (50 V/ns).

For engineers reviewing the STW43N60DM2 datasheet, STW43N60DM2 pinout, STW43N60DM2 application, or STW43N60DM2 equivalent, key selection criteria include its MDmesh™ DM2 fast-recovery diode integration, 250 W total dissipation at T_case = 25 °C, 100% avalanche tested rating (E_AS = 800 mJ), and TO-247 package thermal resistance (R_thj-case = 0.50 °C/W).

Technical Context

This device implements ST's MDmesh™ DM2 silicon technology, combining ultra-low gate charge (Q_g = 56 nC) and reduced output capacitance (C_oss = 120 pF) to minimize switching losses in high-frequency hard-switched and resonant converters. Its Zener-protected gate enables robust ESD immunity without external clamping.

The integrated fast-recovery body diode delivers t_rr = 120 ns and Q_rr = 0.6 µC at 25 °C - critical for reducing commutation losses in bridge-legs - while maintaining rated 600 V blocking and 50 V/ns dv/dt ruggedness under inductive turn-off stress.

Key Specifications

Pinout & Package

STW43N60DM2 is housed in a TO-247 package with isolated tab (drain-connected), optimized for high-power thermal management and PCB-level creepage/clearance compliance in industrial AC-DC and DC-DC systems.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage power switching applications.

Compared with IXFH40N60X and IPP60R099C7, STW43N60DM2 delivers superior ZVS efficiency via lower Q_rr and integrated gate protection, making it optimal for phase-shifted and LLC converters where diode recovery and gate reliability are design-critical.

Availability

STW43N60DM2 is available at Aetrix Electronics and suitable for industrial motor drives, renewable energy inverters, server power supplies, and EV onboard chargers requiring stable component supply across multi-year production cycles.

Supply support for STW43N60DM2 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing analog, digital, and mixed-signal ICs for automotive, industrial, and power applications.

This device belongs to ST's MDmesh™ DM2 high-voltage MOSFET product line, developed specifically for high-efficiency, high-frequency switched-mode power supplies and motor control systems demanding low conduction and switching losses.

FAQ

What is the maximum continuous drain current at 100 °C case temperature?

The STW43N60DM2 supports 21 A continuous drain current at T_case = 100 °C, as specified in Table 2 of the datasheet. This derating reflects thermal limitations of the TO-247 package and ensures safe operation within the SOA boundary when mounted on a heatsink with adequate thermal interface material and airflow.

Does this MOSFET require an external gate resistor for stability?

Yes - a gate resistor of 4.7 Ω is used in the official switching time test circuit (Figure 14), and ST recommends values between 2.2 Ω and 10 Ω to balance switching speed against ringing and EMI. Lower values increase dv/dt stress; higher values raise switching losses and delay times beyond the 29 ns t_d(on) spec.

Is the TO-247 package lead-free and RoHS compliant?

Yes - ST certifies the STW43N60DM2 as ECOPACK®2-compliant, meeting RoHS Directive 2011/65/EU and REACH SVHC requirements. The TO-247 package uses matte tin plating on leads and lead-free solder-compatible terminations, with full material declarations available in ST's ECOPACK® database.

Can this device replace STW43N60M2 in existing designs?

Yes - STW43N60DM2 is a direct upgrade to STW43N60M2, offering identical pinout, voltage/current ratings, and TO-247 package, but with improved Q_rr (0.6 µC vs 1.2 µC), lower R_DS(on) (0.085 Ω vs 0.095 Ω), and enhanced dv/dt ruggedness (50 V/ns vs 35 V/ns), enabling higher efficiency and reliability without layout changes.