STMicroelectronics STW15N95K5

Overview

STW15N95K5 from STMicroelectronics is a high-voltage N-channel Power MOSFET using MDmesh K5 technology, rated for 950 V V_DS, 410 mΩ typ. R_DS(on) at V_GS = 10 V and 6 A, with 12 A continuous drain current (T_C = 25 °C), ultra-low 30 nC total gate charge, and 100% avalanche tested - deployed in industrial AC-DC front-end switching and high-efficiency HV DC-DC converters.

For engineers reviewing the STW15N95K5 datasheet, STW15N95K5 pinout, STW15N95K5 application, or STW15N95K5 equivalent, key selection criteria include its 950 V breakdown voltage, 410 mΩ on-resistance at 10 V gate drive, 30 nC Q_g, TO-247 package thermal resistance (R_thJC = 0.74 °C/W), and Zener-protected gate structure for robust ESD immunity.

Technical Context

This device implements ST's proprietary MDmesh K5 vertical superjunction architecture to minimize conduction and switching losses simultaneously. Its 855 pF C_iss, 65 pF C_oss, and 1 pF C_rss enable fast, low-loss hard-switching up to 100 kHz in PFC and resonant topologies.

The integrated source-drain diode features 444 ns t_rr and 7 µC Q_rr at 25 °C (rising to 630 ns / 9.2 µC at 150 °C), supporting moderate-frequency inductive switching with controlled recovery behavior. The 50 V/ns MOSFET dv/dt ruggedness rating ensures reliable operation under high-slew-rate conditions.

Key Specifications

Pinout & Package

STW15N95K5 is housed in a TO-247 package with isolated tab (pin 2), offering low thermal resistance and high-voltage isolation. The case is electrically connected to the drain terminal, requiring insulated mounting hardware when used in high-side configurations.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IXTH12N90L2 and IPP60R099C7, STW15N95K5 uniquely balances 950 V capability, 410 mΩ conduction resistance, and 30 nC gate charge - making it the only option among the three qualified for 690 VAC industrial PFC and certified for 2.5 kV isolation mounting.

Availability

STW15N95K5 is available at Aetrix Electronics and suitable for industrial AC-DC power supplies, photovoltaic string inverters, and high-voltage battery chargers requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for STW15N95K5 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.

STW15N95K5 belongs to the MDmesh K5 high-voltage Power MOSFET product line, engineered specifically for high-efficiency, high-power-density switching applications in industrial power conversion where 900+ V blocking capability and low FoM are mandatory.

FAQ

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

The STW15N95K5 supports 7.6 A continuous drain current at T_C = 100 °C, as specified in Table 1 of DS9942 Rev 3. This derating reflects thermal limitations of the TO-247 package and ensures safe operation within the SOA boundary at elevated temperatures.

Is the source-drain body diode suitable for synchronous rectification?

No - the intrinsic body diode has 444 ns reverse recovery time and 7 µC Q_rr at 25 °C, which causes significant switching loss and EMI in synchronous rectifier configurations. External Schottky or GaN FETs are recommended for that role.

Does STW15N95K5 require negative gate voltage for reliable turn-off?

No - the device turns off fully with 0 V gate drive due to its 3–5 V threshold voltage. However, applying –5 V to –10 V improves noise immunity and ensures complete depletion during high dv/dt events, especially in half-bridge configurations.

Can STW15N95K5 be mounted directly to a grounded heatsink?

No - the metal tab is internally connected to the drain terminal. Mounting to a grounded heatsink creates a short between drain and system ground. An electrically isolating pad (e.g., silicone thermal pad with >2.5 kV dielectric strength) is required per the insulation rating.