STFW8N120K5

STW8N120K5 is a high‑voltage N‑channel power MOSFET from STMicroelectronics, built with ST’s trench MOSFET technology and offered in the K5 (TO‑220–style) package for easy heatsinking. It’s intended for switching power electronics such as switch‑mode supplies, DC‑DC converters, motor drives, and inverters.
Key points:
- Vds ≈ 120 V; continuous drain current around 8 A (ratings depend on package, temperature, and cooling)
- Gate drive usually around 10 V for full enhancement; threshold typically 2–4 V
- Designed for fast switching with rugged avalanche energy response
- Requires proper heatsinking and gate‑drive circuitry; operate within the device’s safe operating area (SOA)
Note: exact numbers (Rds(on), Id max, thermal resistance, etc.) depend on the specific package variant and operating conditions. If you meant STW8N120K5, check the official datasheet for the precise specifications.

STW8N120K5 is a high-voltage N-channel IGBT from STMicroelectronics. Key features typically include:
- 1200 V blocking voltage
- About 8 A continuous collector current
- Fast-switching operation with low saturation voltage for efficiency
- High dv/dt/di/dt immunity for rugged switching
- Avalanche ruggedness suitable for inductive-load protection
- Gate-drive compatibility with standard IGBT drives (typical drive around 15 V)
- Suitable for high-voltage switching applications such as switch-mode power supplies, motor drives, and inverters
Note: exact numeric specs (Vce(sat), switching times, packaging, safe operating area, etc.) can vary by lot and packaging. Please refer to the official datasheet for precise details.

3 pins (G, D, S) with the drain tab. It is an N-channel enhancement-mode power MOSFET used for high-voltage switching.

STMicroelectronics (ST) is the manufacturer. It is a multinational electronics and semiconductor company that designs and produces integrated circuits and discrete semiconductors (including power MOSFETs). It is headquartered in Geneva, Switzerland, with global operations and is publicly traded on Euronext Paris and Borsa Italiana.

STW8N120K5 is a high‑voltage N‑channel MOSFET (≈1200 V, ≈8 A). Common application areas include:
- Offline switching power supplies (SMPS) and PFC stages
- DC‑DC converters in high‑voltage power electronics
- Inverters and solar/wuel UPS power stages
- Motor drives and induction motor controllers
- Battery chargers and welding equipment
- Any high‑voltage switching application in industrial equipment and power adapters

D²PAK (TO-263) surface-mount package.