STMicroelectronics STW36N55M5

Overview

STW36N55M5 from STMicroelectronics is an N-channel 550 V, 33 A MDmesh™ V Power MOSFET in TO-247 package with 0.06 Ω typ. R_DS(on), 150 °C max junction temperature, and 100% avalanche tested - used as a high-voltage switching device in offline SMPS, PFC stages, and industrial motor drives.

For engineers reviewing the STW36N55M5 datasheet, STW36N55M5 pinout, STW36N55M5 application, or STW36N55M5 equivalent, key selection criteria include its 550 V V_DSS, low gate charge (62 nC), fast switching (13 ns t_r/t_f), and robust 510 mJ single-pulse avalanche energy rating.

Technical Context

This MOSFET employs ST's MDmesh™ V vertical silicon process combined with PowerMESH™ horizontal layout to achieve industry-leading R_DS(on) × area efficiency. Its 550 V breakdown voltage supports 400 V bus applications with margin, and its 15 V/ns dv/dt capability ensures noise-immune operation in hard-switched converters.

The device features a fully rated source-drain diode with 334 ns reverse recovery time at 25 °C and 406 ns at 150 °C, enabling use in synchronous rectification and freewheeling paths where controlled body-diode conduction is required.

Key Specifications

Pinout & Package

STW36N55M5 is housed in a TO-247 package with three terminals: Drain (Tab), Source (Pin 1), and Gate (Pin 2). The metal tab is electrically connected to the Drain, requiring isolation when mounted to heatsinks.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IXTH30N50L and IPP60R099C7, STW36N55M5 uniquely balances 550 V rating, ultra-low 0.06 Ω on-resistance, and guaranteed avalanche ruggedness - making it optimal for high-power, high-reliability 400 V bus systems where thermal and transient margins are critical.

Availability

STW36N55M5 is available at Aetrix Electronics and suitable for industrial motor drives, telecom rectifier modules, and EV onboard charger PFC stages requiring stable component supply and long-term production continuity.

Supply support for STW36N55M5 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 industrial, automotive, and consumer markets.

STW36N55M5 belongs to the MDmesh™ V Power MOSFET product line, engineered specifically for high-efficiency, high-voltage switching in offline SMPS, PFC, and industrial inverters demanding best-in-class R_DS(on) and ruggedness.

FAQ

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

The STW36N55M5 supports 20.8 A continuous drain current at T_C = 100 °C, as specified in Table 2 of the official datasheet (Doc ID 022902 Rev 2). This rating assumes proper heatsinking and accounts for R_DS(on) increase with temperature, ensuring safe operation without exceeding 150 °C junction limit.

Does STW36N55M5 have an integrated body diode, and what are its recovery characteristics?

Yes, STW36N55M5 includes a monolithic source-drain body diode rated for 33 A continuous and 132 A pulsed current. Its reverse recovery time is 334 ns at 25 °C and 406 ns at 150 °C, with 5 µC Q_rr at 25 °C - values measured under standardized conditions (I_SD = 33 A, di/dt = 100 A/µs, V_DD = 100 V).

Can STW36N55M5 be used in zero-voltage switching (ZVS) topologies?

Yes - its low C_oss (75 pF) and Co(er) (71 pF), combined with 62 nC total gate charge, support reliable ZVS operation in LLC resonant converters up to 500 kHz. The device's 15 V/ns dv/dt immunity prevents spurious turn-on during resonant transitions, a key requirement for stable ZVS behavior.

Is the TO-247 package lead-free and RoHS compliant?

Yes, STW36N55M5 is manufactured in an ECOPACK®-compliant TO-247 package meeting RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. ST's official ECOPACK documentation confirms full lead-free termination finish and halogen-free molding compound for this part number.