STMicroelectronics

STW18NK80Z

STW18NK80Z Description

The STW18NK80Z from STMicroelectronics is an N-channel 800V, 19A power MOSFET housed in a TO-247-3 package, designed for high-voltage switching applications. Leveraging SuperMESH™ technology, it delivers superior performance with low on-state resistance (Rds(on) of 380mΩ @ 10A, 10V) and high power dissipation capability (350W @ Tc). Although marked as obsolete, its robust design ensures reliability in demanding environments. The device features a gate charge (Qg) of 250nC @ 10V and an input capacitance (Ciss) of 6100pF @ 25V, optimizing switching efficiency. With a Vgs(max) of ±30V and a threshold voltage (Vgs(th) of 4.5V @ 150µA, it offers stable gate control. Compliant with ROHS3 and REACH standards, it is suitable for legacy designs requiring high-voltage tolerance and thermal resilience.

STW18NK80Z Features

• High Voltage Rating: 800V Vdss for industrial and automotive applications.
• Low Rds(on): 380mΩ @ 10A, 10V minimizes conduction losses.
• SuperMESH™ Technology: Enhances switching efficiency and reduces parasitic effects.
• High Power Handling: 350W (Tc) dissipation for thermally challenging setups.
• Robust Gate Drive: ±30V Vgs(max) and 4.5V threshold for reliable operation.
• Compliance: ROHS3, REACH Unaffected, and MSL 1 (Unlimited) for environmental and handling flexibility.
• Legacy Support: Ideal for maintaining or upgrading older high-voltage systems.

STW18NK80Z Applications

• Switched-Mode Power Supplies (SMPS): High-efficiency PFC and DC-DC converters.
• Industrial Motor Drives: Inverters and motor control circuits requiring 800V endurance.
• Renewable Energy Systems: Solar inverters and wind power converters.
• Automotive Electronics: EV charging systems and high-voltage DC-DC modules.
• Lighting Solutions: High-power LED drivers and HID ballasts.

Conclusion of STW18NK80Z

The STW18NK80Z remains a viable choice for engineers working with high-voltage, high-current applications despite its obsolete status. Its SuperMESH™ technology, low Rds(on), and high power dissipation make it suitable for industrial, automotive, and renewable energy systems. While newer alternatives may exist, its proven reliability and compliance with environmental standards ensure continued utility in legacy and specialized designs.