STMicroelectronics STD11N65M2

Overview

STD11N65M2 from STMicroelectronics is an N-channel 650 V, 7 A Power MOSFET in DPAK (TO-252) package, fabricated with MDmesh™ M2 technology. It delivers 0.60 Ω typ. R_DS(on), 12.5 nC total gate charge, and 85 W power dissipation at T_case = 25 °C, enabling high-efficiency operation in offline SMPS primary-side switching.

For engineers reviewing the STD11N65M2 datasheet, STD11N65M2 pinout, STD11N65M2 application, or STD11N65M2 equivalent, key selection criteria include avalanche ruggedness (110 mJ E_AS), low C_oss profile (20 pF typ.), Zener-protected gate, and dv/dt ruggedness up to 50 V/ns - critical for reliable hard-switching in industrial AC-DC converters.

Technical Context

This device employs a strip-based vertical structure optimized for reduced conduction and switching losses. Its MDmesh™ M2 process enables low R_DS(on) × Q_g figure-of-merit (0.68 Ω × 12.5 nC = 8.5 Ω·nC), supporting high-frequency operation up to 100 kHz in flyback and PFC topologies.

The integrated Zener-protected gate withstands ±25 V V_GS, while its 100% unclamped inductive switching (UIS) tested avalanche capability ensures robustness under transient overloads. The source-drain diode exhibits 318 ns trr and 2.5 µC Q_rr at T_j = 25 °C, minimizing commutation losses in quasi-resonant designs.

Key Specifications

Pinout & Package

DPAK (TO-252) package with exposed drain tab (pin 2) for thermal and electrical connection; compact surface-mount footprint suitable for automated assembly and high-power density board designs.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar N-channel 650 V Power MOSFET applications.

Compared with STP11N65M2, STD11N65M2 provides identical electrical performance in a smaller, automated-assembly-ready DPAK package - reducing PCB area by 65% and eliminating through-hole drilling. Versus IPD95R1K2P7, it delivers 42% lower R_DS(on) at 650 V, directly lowering conduction loss in mainstream industrial SMPS.

Availability

STD11N65M2 is available at Aetrix Electronics and suitable for industrial AC-DC adapters, server PSU primary switches, and EV charger auxiliary supplies requiring stable component supply and long-term production continuity.

Supply support for STD11N65M2 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 microcontrollers, power devices, sensors, and analog ICs for industrial, automotive, and consumer markets.

STD11N65M2 belongs to the MDmesh™ M2 Power MOSFET product line, engineered specifically for high-efficiency, high-reliability offline switching power supplies operating at 650 V with demanding thermal and ruggedness requirements.

FAQ

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

The STD11N65M2 supports 4.4 A continuous drain current at T_case = 100 °C, as specified in Table 1 of DS10348 Rev 6. This derating reflects thermal limitations of the DPAK package's 1.47 °C/W junction-to-case resistance and ensures safe operation within the 150 °C maximum junction temperature limit under sustained load conditions.

Does STD11N65M2 include integrated gate protection?

Yes - the device integrates a Zener diode between gate and source, rated for ±25 V V_GS. This protects the gate oxide from electrostatic discharge and gate driver overshoot, eliminating the need for external gate protection components in most industrial applications, as confirmed in the "Features" section and Absolute Maximum Ratings table.

How does the MDmesh™ M2 technology improve performance over standard planar MOSFETs?

MDmesh™ M2 uses a high-density strip layout and optimized vertical charge-balancing structure to reduce both R_DS(on) and gate charge simultaneously. Compared to first-generation 650 V planar MOSFETs, it achieves up to 40% lower R_DS(on) × Q_g figure-of-merit, directly improving efficiency in high-frequency switching applications like PFC and QR flyback converters.

Can STD11N65M2 replace STP11N65M2 in existing TO-220 designs?

No direct drop-in replacement - STD11N65M2 uses DPAK (TO-252) packaging with different pinout (G-S-D vs. TO-220's G-D-S), thermal pad orientation, and PCB footprint. While electrically identical, mechanical redesign is required for pad layout, thermal relief, and assembly process; STP11N65M2 remains the correct choice for through-hole or heatsink-clamped implementations.