STMicroelectronics STF42N60M2-EP

Overview

STF42N60M2-EP from STMicroelectronics is an N-channel 600 V, 34 A Power MOSFET in TO-220FP package, featuring 0.076 Ω typ. R_DS(on), 55 nC total gate charge, and 15 V/ns dv/dt ruggedness. It employs MDmesh™ M2 EP technology for ultra-low turn-off switching losses and is engineered for high-frequency hard-switched converters above 150 kHz in industrial SMPS and PFC stages.

For engineers reviewing the STF42N60M2-EP datasheet, STF42N60M2-EP pinout, STF42N60M2-EP application, or STF42N60M2-EP equivalent, key selection criteria include its 600 V V_(BR)DSS, 136 A pulsed drain current, 150 °C max junction temperature, Zener-protected gate, and 100% avalanche-tested reliability under unclamped inductive load conditions.

Technical Context

This MOSFET uses a strip-based MDmesh™ M2 EP vertical structure to simultaneously reduce R_DS(on) and output capacitance (C_OSS = 112 pF typ.), enabling high-efficiency operation at >150 kHz switching frequencies. Its optimized C_oss profile and low Q_gd/Q_g ratio (25/55 nC) minimize Miller-induced voltage spikes and improve gate drive robustness.

The device integrates a monolithic Zener diode between gate and source for ±25 V gate-source voltage protection and undergoes 100% unclamped inductive switching (UIS) testing with E_AS = 800 mJ at 50 V. Thermal resistance is rated at 3.13 °C/W (j-case), supporting continuous 34 A conduction at T_C = 25 °C.

Key Specifications

Pinout & Package

STF42N60M2-EP is housed in a TO-220FP (Full-Pak) package with isolated tab, offering enhanced creepage/clearance and simplified heatsinking versus standard TO-220. The plastic body insulates the drain-connected tab from mounting hardware, eliminating need for insulating washers in many applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IPP60R099C7 and IXFH42N60X3, STF42N60M2-EP delivers superior combination of low R_DS(on), integrated gate protection, and verified avalanche capability in a compact, isolated-tab TO-220FP-making it optimal for cost-sensitive, space-constrained 1–3 kW industrial SMPS where reliability under transient stress is critical.

Availability

STF42N60M2-EP is available at Aetrix Electronics and suitable for industrial switch-mode power supplies, active PFC front-ends, and high-frequency LLC resonant converters requiring stable component supply and long-term production continuity.

Supply support for STF42N60M2-EP 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, Switzerland, designing and manufacturing microcontrollers, power transistors, analog ICs, and sensors for industrial, automotive, and consumer markets.

This device belongs to ST's MDmesh™ M2 EP high-voltage Power MOSFET product line, developed specifically for high-efficiency, high-frequency switched-mode power conversion in industrial and telecom infrastructure equipment.

FAQ

What is the maximum continuous drain current for STF42N60M2-EP at 100 °C case temperature?

The maximum continuous drain current is 22 A at T_C = 100 °C, as specified in Table 2 of the datasheet. This derating reflects thermal limits imposed by the TO-220FP package's 3.13 °C/W junction-to-case thermal resistance and safe operating area constraints-not gate drive or silicon limitations.

Does STF42N60M2-EP require an external gate resistor for stability in 200 kHz operation?

A gate resistor of 4.7 Ω is used in the datasheet's switching characterization (Table 8), confirming stable operation at 200 kHz. While not mandatory, this value damps gate ringing and controls dv/dt; values below 2.2 Ω risk oscillation due to low 4.5 Ω intrinsic gate resistance and layout parasitics.

How does the Zener protection on the gate function during overvoltage events?

The integrated bidirectional Zener clamps gate-source voltage to ±25 V, diverting excess current away from the gate oxide. During transient overvoltage, it conducts before gate oxide breakdown occurs (typically <20 V), preserving device integrity without requiring external components-verified across 100% production test.

Can STF42N60M2-EP replace STW42N60M2 in existing TO-3P designs?

No-STF42N60M2-EP uses TO-220FP (isolated tab), while STW42N60M2 uses TO-3P (conductive tab). Mechanical fit, thermal interface, and electrical isolation differ fundamentally. Direct replacement would compromise safety isolation and thermal performance; redesign of heatsink mounting and PCB layout is required.