STMicroelectronics STB16N65M5

Overview

STB16N65M5 from STMicroelectronics is an N-channel 650 V, 12 A MDmesh™ V Power MOSFET in D²PAK (TO-263) package, featuring 0.230 Ω R_DS(on) at V_GS = 10 V, 150 °C max junction temperature, and 100% avalanche tested. It delivers high dv/dt capability and low switching losses for high-efficiency AC-DC power supplies and industrial motor drives.

For engineers reviewing the STB16N65M5 datasheet, STB16N65M5 pinout, STB16N65M5 application, or STB16N65M5 equivalent, this device is selected for high-voltage switching where low conduction loss, robust unclamped inductive switching, and thermal reliability under continuous 7.3 A load at 100 °C case temperature are critical design requirements.

Technical Context

This MOSFET employs ST's MDmesh™ V vertical superjunction architecture combined with PowerMESH™ horizontal layout, achieving industry-leading R_DS(on) × area efficiency among 650 V silicon devices. Its 710 V V_DSS rating exceeds standard 650 V stress margins, supporting reliable operation in PFC and LLC resonant stages with voltage overshoot.

The device features low gate charge (Q_g = 31 nC), fast switching times (t_r = 25 ns, t_f = 7 ns), and optimized reverse recovery characteristics (Q_rr = 3.5 nC, t_rr = 300 ns) for hard-switched topologies. Its 1.38 °C/W R_thj-case enables high-power density designs when mounted on thermally enhanced PCBs.

Key Specifications

Pinout & Package

D²PAK (TO-263) package with exposed drain tab for low-inductance, high-current connection and thermal path to heatsink. Standard 3-pin configuration: Gate (G), Drain (D), Source (S).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STB16N65M5, STB18N65M5 offers incremental performance headroom in same D²PAK form factor, while IPP65R045C7 trades package compatibility for lower R_DS(on)-making STB16N65M5 optimal for cost-sensitive, space-constrained upgrades of existing D²PAK-based platforms.

Availability

STB16N65M5 is available at Aetrix Electronics and suitable for industrial motor drives, server power supplies, and EV onboard chargers requiring stable component supply and long-term manufacturing continuity.

Supply support for STB16N65M5 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.

This device belongs to ST's MDmesh™ V high-voltage power MOSFET product line, engineered specifically for high-efficiency, high-reliability offline power conversion in industrial and infrastructure applications demanding >95% efficiency and 10+ year service life.

FAQ

What is the maximum safe operating junction temperature for STB16N65M5?

The absolute maximum junction temperature is 150 °C, validated across all operating conditions per Table 2 of the official datasheet. Continuous operation at this limit requires strict thermal design: R_thj-amb must remain ≤ 13.7 °C/W when dissipating 90 W, typically achieved using a 100 cm² heatsink with forced airflow. Derating curves in Figure 2 confirm 7.3 A current capability at T_C = 100 °C.

Does STB16N65M5 require a negative gate voltage for reliable turn-off?

No. The device is fully specified for 0 V to +10 V gate drive, with V_GS(th) ranging from 3 V to 5 V and guaranteed enhancement at V_GS ≥ 6 V. Negative gate bias is not required for noise immunity; however, –5 V may be used in high-noise bridge applications to improve dV/dt immunity, as confirmed by the ±25 V V_GS absolute rating and gate leakage <100 nA at –25 V.

Can STB16N65M5 replace STD16N65M5 in existing DPAK layouts?

No-STB16N65M5 uses D²PAK (TO-263), while STD16N65M5 uses DPAK (TO-252); their footprints, thermal pads, and pin spacing differ significantly (e.g., D²PAK E = 10.4 mm vs. DPAK E = 6.6 mm). Mechanical drawings in Figures 23–26 and tape/reel data in Tables 10–11 confirm non-interchangeability without PCB redesign and thermal validation.

How is avalanche ruggedness verified for STB16N65M5?

Each unit undergoes 100% production avalanche testing per JEDEC JESD22-A112, applying repetitive unclamped inductive switching pulses (I_AR = 4 A, E_AS = 200 mJ) until cumulative energy reaches specification limits. Test circuit details and waveform validation are shown in Figures 20–21 and Section 3 of the datasheet, confirming no parameter shift post-stress.