STMicroelectronics STF13N95K3

Overview

STF13N95K3 from STMicroelectronics is an N-channel 950 V, 680 mΩ typ. (850 mΩ max), 10 A MDmesh K3 Power MOSFET in TO-220FP package, designed for high-voltage switching in offline SMPS, PFC stages, and industrial inverters. It features 100% avalanche tested ruggedness, 9 V/ns dv/dt capability, and Zener-protected gate.

For engineers reviewing the STF13N95K3 datasheet, STF13N95K3 pinout, STF13N95K3 application, or STF13N95K3 equivalent, key selection criteria include R_DS(on) at 10 V drive, E_AS = 400 mJ, Q_g = 51 nC, C_oss = 117 pF, and TO-220FP thermal resistance R_thJC = 3.13 °C/W.

Technical Context

This device employs ST's optimized vertical MDmesh K3 structure to achieve ultra-low on-resistance while maintaining high voltage blocking (950 V) and fast dynamic performance. Its low C_iss (1620 pF), Crss (1.2 pF), and Co(er) (131 pF) enable efficient high-frequency hard-switching operation up to several hundred kHz.

The integrated source-drain diode delivers improved reverse recovery with t_rr = 500 ns (T_J = 25 °C) and Q_rr = 9 µC, reducing switching losses in bridge configurations. The Zener-protected gate ensures ±30 V V_GS robustness against transients.

Key Specifications

Pinout & Package

STF13N95K3 is housed in a TO-220FP (Type B) package with isolated tab, offering enhanced creepage and thermal performance over standard TO-220. The plastic body provides electrical isolation between drain (tab) and mounting surface.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STP13N95K3 and STW13N95K3, STF13N95K3 uniquely combines certified electrical isolation, standardized TO-220FP footprint, and 40 W power capability-making it optimal for space-constrained, safety-certified AC-DC power supplies where creepage and thermal management must coexist.

Availability

STF13N95K3 is available at Aetrix Electronics and suitable for industrial AC-DC power supplies, telecom rectifier modules, and server PSU PFC stages requiring stable component supply and long-term design-in support.

Supply support for STF13N95K3 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, microcontrollers, sensors, and automotive ICs.

The MDmesh K3 product line targets high-efficiency, high-reliability high-voltage power conversion-specifically engineered for 800 V+ DC bus applications in industrial, telecom, and server power systems.

FAQ

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

The STF13N95K3 supports 6 A continuous drain current at T_C = 100 °C, as specified in Table 1 of DS6262 Rev 4. This reflects thermal derating due to junction-to-case resistance (3.13 °C/W) and maximum rated junction temperature (150 °C), ensuring safe operation under sustained load in enclosed environments.

Does STF13N95K3 require external gate protection?

No. The device integrates a Zener diode between gate and source, clamping V_GS to ±20 V under transient conditions. This eliminates the need for external gate protection components in typical SMPS layouts, provided PCB layout minimizes inductive gate loops and drive impedance remains within recommended limits (e.g., RG = 4.7 Ω).

How does its reverse recovery performance compare to standard silicon MOSFETs?

STF13N95K3 achieves t_rr = 500 ns and Q_rr = 9 µC at 25 °C-up to 40% lower Q_rr than legacy 900 V MOSFETs. This results from MDmesh K3's optimized body diode structure, directly reducing commutation loss and EMI in bridge topologies without requiring external SiC or Schottky catch diodes.

Can STF13N95K3 be used in place of STP13N95K3 without layout changes?

No. Although both share identical die characteristics, STF13N95K3 uses TO-220FP (isolated tab), whereas STP13N95K3 uses TO-220 (conductive tab). Substitution requires verifying creepage/clearance compliance, updating thermal interface design (insulating pad mandatory), and confirming mechanical fit-no direct footprint compatibility exists.