STMicroelectronics STF11NM60N

Overview

STF11NM60N from STMicroelectronics is an N-channel 600 V, 0.37 Ω (typ), 10 A MDmesh™ II Power MOSFET in TO-220FP package, designed for high-efficiency switching converters. It features 100% avalanche tested ruggedness, low gate charge (31 nC), and low input capacitance (850 pF), enabling fast switching in SMPS, PFC stages, and industrial AC-DC power supplies.

For engineers reviewing the STF11NM60N datasheet, STF11NM60N pinout, STF11NM60N application, or STF11NM60N equivalent, key selection criteria include its 600 V V_DSS, 0.37 Ω R_DS(on) at V_GS = 10 V, 31 nC total gate charge, 150 °C max junction temperature, and TO-220FP thermal resistance of 5 °C/W (junction-to-case).

Technical Context

This device uses ST's second-generation MDmesh™ vertical structure combined with strip layout to minimize conduction and switching losses simultaneously. Its optimized charge distribution enables high dv/dt immunity (45 V/ns typ) and low reverse recovery charge (3.26 µC) in the integrated body diode.

The TO-220FP package provides isolated mounting via insulated tab while maintaining low R_thj-case = 5 °C/W - critical for thermally constrained designs. Gate threshold voltage (2–4 V) ensures compatibility with standard 10 V gate drivers and supports robust noise margin in noisy industrial environments.

Key Specifications

Pinout & Package

STF11NM60N is housed in a TO-220FP (Full-Pak) package with electrically insulated tab, enabling direct mounting to heatsinks without isolation hardware. The package has three leads: Drain (tab), Source (pin 1), and Gate (pin 2), with pin 3 internally connected to Drain (tab) for mechanical reinforcement.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STP11NM60N, STF11NM60N trades 3.9 °C/W higher junction-to-case thermal resistance for electrical isolation - essential in floating-ground or multi-rail systems. Versus FDPF12N50, it delivers 100 V higher blocking voltage and certified avalanche ruggedness, making it suitable for industrial-grade 600 V designs where reliability is non-negotiable.

Availability

STF11NM60N is available at Aetrix Electronics and suitable for server power supplies, industrial PFC modules, solar microinverters, and EV onboard chargers requiring stable component supply across extended production lifecycles.

Supply support for STF11NM60N 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, specializing in power management, analog, MEMS, and microcontrollers for industrial, automotive, and consumer markets.

STF11NM60N belongs to the MDmesh™ II Power MOSFET product line, engineered specifically for high-efficiency, high-voltage switching in offline SMPS, PFC, and industrial motor drives where low R_DS(on) × Q_g is critical.

FAQ

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

The STF11NM60N supports 6.3 A continuous drain current at T_C = 100 °C, as specified in Table 2 of the datasheet. This value reflects thermal derating due to reduced safe operating area at elevated temperatures and assumes proper heatsinking with R_thj-case ≤ 5 °C/W. Exceeding this current risks thermal runaway even if peak pulse ratings appear sufficient.

Does STF11NM60N require a gate resistor for stability?

Yes - a gate resistor (typically 10–47 Ω) is required to dampen parasitic oscillation caused by PCB trace inductance interacting with C_iss and C_rss. The device's low gate input resistance (3.7 Ω) and 850 pF input capacitance make it susceptible to ringing without controlled turn-on/turn-off slew rates. Layout best practices also mandate short, low-inductance gate traces and local gate capacitor decoupling.

Can STF11NM60N replace STP11NM60N in existing designs?

Electrically yes, but mechanically no - STF11NM60N uses TO-220FP with insulated tab, whereas STP11NM60N uses standard TO-220. Direct replacement requires verifying heatsink isolation, mounting torque, and thermal interface design. The higher R_thj-case (5 vs. 1.38 °C/W) may necessitate larger heatsink area or lower ambient temperature to maintain equivalent junction temperature.

Is the body diode suitable for synchronous rectification?

No - the body diode has t_rr = 340 ns and Q_rr = 3.26 µC at 25 °C (rising to 4.42 µC at 150 °C), resulting in significant reverse recovery loss and EMI. For synchronous rectification, a discrete Schottky or GaN FET with zero reverse recovery is strongly recommended. This MOSFET is intended for hard-switched or resonant topologies where body diode conduction is minimized or avoided.