STMicroelectronics STD1NK60-1

Overview

STD1NK60-1 from STMicroelectronics is a Zener-protected N-channel SuperMESH Power MOSFET rated for 600 V drain-source voltage, 8.5 Ω max R_DS(on) at V_GS = 10 V and I_D = 0.5 A, and 1 A continuous drain current at T_C = 25 °C. It features 100% avalanche testing, minimized gate charge (7 nC), and high dv/dt capability (3 V/ns), targeting low-power SMPS and CFL ballast circuits.

For engineers reviewing the STD1NK60-1 datasheet, STD1NK60-1 pinout, STD1NK60-1 application, or STD1NK60-1 equivalent, key selection criteria include its IPAK (TO-251) package thermal resistance (R_thJC = 4.2 °C/W), source-drain diode recovery performance (Q_rr = 240 nC at T_J = 25 °C), and Zener-protected gate robustness against ESD and transient overstress.

Technical Context

This device implements ST's SuperMESH process-a refined version of PowerMESH-optimized to reduce on-resistance while maintaining high-voltage ruggedness. Its Zener-protected gate structure enables improved ESD immunity without external clamping components.

The MOSFET supports unclamped inductive switching with guaranteed single-pulse avalanche energy (E_AS = 25 mJ) and exhibits fast switching dynamics: t_d(off) = 19 ns, t_f = 25 ns, and C_iss = 156 pF at V_DS = 25 V, making it suitable for high-frequency, low-duty-cycle flyback and resonant converters.

Key Specifications

Pinout & Package

STD1NK60-1 is housed in an IPAK (TO-251) type C package with exposed drain tab for thermal and electrical connection. The package provides R_thJC = 4.2 °C/W and is lead-free, RoHS-compliant per ECOPACK standards.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar N-channel 600 V Power MOSFET applications.

Compared with STP1NK60Z and FQP1N60, STD1NK60-1 uniquely combines IPAK thermal performance (R_thJC = 4.2 °C/W), Zener gate protection, and guaranteed avalanche energy-making it optimal for compact, self-protected, low-power offline converters where board area and reliability are prioritized over ultra-low cost.

Availability

STD1NK60-1 is available at Aetrix Electronics and suitable for low-power battery chargers, switch-mode low-power supplies (SMPS), and low-power CFL ballasts requiring stable component supply and long-term industrial availability.

Supply support for STD1NK60-1 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.

STD1NK60-1 belongs to ST's SuperMESH Power MOSFET product line, engineered specifically for high-efficiency, high-reliability, low-power offline AC/DC conversion where ruggedness, small footprint, and gate robustness are critical.

FAQ

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

The STD1NK60-1 supports 0.63 A continuous drain current at T_C = 100 °C, as specified in Table 1 of DS12019 Rev 2. This derating reflects junction-to-case thermal resistance (4.2 °C/W) and maximum allowable T_J of 150 °C, requiring appropriate PCB copper area for heat spreading.

Does STD1NK60-1 include an integrated body diode, and what are its recovery characteristics?

Yes, it features an intrinsic source-drain diode with forward voltage V_SD = 1.6 V at I_SD = 1 A and reverse recovery charge Q_rr = 240 nC at T_J = 25 °C. Recovery time t_rr is 140 ns under standard test conditions (di/dt = 100 A/µs, V_DD = 25 V), enabling use in discontinuous conduction mode flyback designs.

Can STD1NK60-1 be used in place of a standard 600 V MOSFET without gate protection?

Yes-its integrated Zener gate protection (±30 V V_GS rating) allows direct replacement in designs previously using external gate clamps. However, gate drive circuitry must still limit peak current during fast transitions, as the Zener does not eliminate need for proper gate resistor selection per switching speed requirements.

Is the IPAK package of STD1NK60-1 compatible with automated SMT assembly?

No-the IPAK (TO-251) package is through-hole mountable only, with leads designed for wave soldering or manual insertion. Its exposed drain tab requires thermal via placement on PCB but cannot be reflow-soldered due to leadframe geometry and lack of gull-wing or J-lead terminations.