STMicroelectronics STW10NK60Z

Overview

STW10NK60Z from STMicroelectronics is a Zener-protected N-channel 600 V, 10 A SuperMESH Power MOSFET in TO-247 package, featuring 0.68 Ω typical R_DS(on), 100% avalanche tested operation, and 4.5 V/ns peak diode recovery dv/dt capability. It serves as a high-reliability switching device in offline SMPS, PFC stages, and industrial motor drives where robustness under unclamped inductive switching is critical.

For engineers reviewing the STW10NK60Z datasheet, STW10NK60Z pinout, STW10NK60Z application, or STW10NK60Z equivalent, key selection criteria include its 115 W total power dissipation at T_C = 25 °C, 1.09 °C/W junction-to-case thermal resistance, 48 nC total gate charge, and verified 300 mJ single-pulse avalanche energy - all confirmed per DS2635 Rev 12.

Technical Context

This device implements ST's SuperMESH process - an evolution of PowerMESH - to simultaneously reduce on-resistance and enhance ruggedness. Its integrated gate-source Zener protection (±30 V rating) and optimized cell layout enable stable operation under high dv/dt stress (4.5 V/ns) and repetitive avalanche conditions (10 A I_AR).

The MOSFET exhibits low dynamic losses with 1370 pF input capacitance, 37 pF reverse transfer capacitance, and fast switching: 20 ns turn-on delay, 55 ns turn-off delay, and 30 ns fall time under 4.7 Ω gate drive. Its source-drain diode supports 10 A continuous current with 570 ns reverse recovery time and 4.3 µC Q_rr at 150 °C junction temperature.

Key Specifications

Pinout & Package

STW10NK60Z uses the TO-247 package: a 3-lead through-hole power package with isolated tab (drain-connected), rated for high-voltage isolation and high-current handling. The metal tab is electrically connected to the drain terminal and must be insulated from chassis ground unless drain is referenced to system ground.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STP10NK60Z, STW10NK60Z delivers 3.3× higher power handling and superior thermal performance; versus IPP60R190C7, it trades 0.49 Ω higher R_DS(on) for guaranteed avalanche ruggedness and integrated gate protection - critical for industrial reliability.

Availability

STW10NK60Z is available at Aetrix Electronics and suitable for industrial motor drives, server PSUs, AC-DC adapters ≥100 W, and UPS inverter stages requiring stable component supply across multi-year production cycles.

Supply support for STW10NK60Z 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 analog, microcontroller, power, and sensor solutions for automotive, industrial, and consumer markets.

STW10NK60Z belongs to the SuperMESH Power MOSFET product line, engineered specifically for high-reliability, high-voltage switching in industrial power conversion where avalanche tolerance and dv/dt immunity are non-negotiable.

FAQ

Is STW10NK60Z pin-compatible with other ST 10A/600V MOSFETs like STP10NK60Z?

No. STW10NK60Z uses TO-247 (D-G-S pinout: lead 1 = G, lead 2 = D, lead 3 = S), while STP10NK60Z uses TO-220 (same pinout order but different mechanical footprint and thermal characteristics). PCB layout, heatsinking, and creepage/clearance must be redesigned for TO-247. No shared land pattern or mounting hardware.

What is the maximum recommended gate resistor value for reliable switching at 200 kHz?

Based on Q_g = 48 nC and typical gate driver output impedance, a 10 Ω series gate resistor achieves ~100 ns rise/fall times with minimal ringing. For 200 kHz operation, values between 5 Ω and 15 Ω balance switching loss, EMI, and driver stress. Values >22 Ω increase switching loss disproportionately without significant EMI benefit.

Does STW10NK60Z require external gate protection given its internal Zener?

The integrated ±30 V gate-source Zener provides robust protection against ESD (4 kV HBM) and moderate gate driver overshoot. However, in systems with long gate traces, high di/dt noise, or transformer-isolated drivers, a 12 V TVS (e.g., SMAJ12A) between gate and source is still recommended to clamp sub-10 ns transients beyond Zener response speed.

Can STW10NK60Z replace STW20NK50Z in a 500 W PFC boost converter?

No. STW20NK50Z is a 500 V, 20 A device with lower R_DS(on) (0.25 Ω) but insufficient voltage rating for 600 V bus applications. STW10NK60Z offers correct 600 V rating and avalanche margin but only 10 A current capacity - verify peak inductor current does not exceed 10 A RMS or 36 A pulsed (I_DM) in your PFC design before substitution.