STW9NK90Z MOSFETs by STMicroelectronics – High-Voltage Power Switching for Demanding Applications
The MOSFETs STW9NK90Z by STMicroelectronics are high-voltage N-channel MOSFETs designed for rugged and reliable power switching applications. With a voltage rating of 900V and a continuous drain current of 6.8A, these transistors deliver excellent performance in demanding environments such as power supplies, lighting systems, and motor drives. Featuring Zener-protected gates and low gate charge, the STW9NK90Z MOSFETs by STMicroelectronics ensure optimal switching efficiency and durability.
In this blog, we’ll explore its technical specifications, key features, application areas, wiring and integration overview, real-world performance example, and where to purchase with global shipping from Xon Electronics.
Technical Specifications of STW9NK90Z
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Manufacturer: STMicroelectronics
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Part Number: STW9NK90Z
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Type: N-Channel Power MOSFET
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Drain-Source Voltage (Vds): 900V
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Continuous Drain Current (Id): 6.8A
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On-Resistance (Rds(on)): 1.3O max
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Total Gate Charge (Qg): 80nC
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Gate Threshold Voltage (Vgs(th)): 3–5V
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Package: TO-247
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Mounting Type: Through Hole
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Category: Semiconductors, Transistors, STW9NK90Z MOSFETs by STMicroelectronics
This component is built to handle harsh switching conditions while maintaining excellent thermal and electrical performance.
Key Features of STW9NK90Z
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High Voltage Tolerance (900V) – Suitable for high-side switching and PFC circuits
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Zener-Protected Gate – Enhanced ESD protection and gate reliability
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Low Gate Charge – Faster switching with reduced driving power
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TO-247 Package – Excellent thermal conductivity and mounting flexibility
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RoHS Compliant – Environmentally friendly and regulation compliant
With these features, the STW9NK90Z MOSFETs by STMicroelectronics are ideal for engineers looking for reliable, long-lasting components in critical systems.
Applications of STW9NK90Z MOSFET
The STW9NK90Z MOSFETs by STMicroelectronics are engineered for efficiency and endurance in the following applications:
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Switched-Mode Power Supplies (SMPS)
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Power Factor Correction (PFC) Circuits
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High-Intensity Discharge (HID) Lighting Systems
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Industrial Motor Controllers
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Solar Inverters and Energy Conversion Units
They provide reliable high-voltage switching in both consumer and industrial environments.
Wiring and Integration Overview
For a typical application setup:
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Gate (G): Connected to a PWM driver or control logic
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Drain (D): Connected to the load or high-voltage rail
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Source (S): Connected to ground or negative rail
Due to its TO-247 package, proper heatsinking is recommended for high-load or continuous operations to manage thermal stress.
Use Case Scenario: Solar Inverter PFC Upgrade
Scenario: A solar inverter manufacturer required a high-voltage MOSFET with low gate loss and robust switching performance.
Problem: Previous MOSFETs lacked sufficient voltage headroom and had high switching losses.
Solution: Replacing them with STW9NK90Z MOSFETs by STMicroelectronics significantly reduced gate drive requirements and improved energy efficiency.
Result: 12% efficiency gain in the PFC stage, improved reliability under temperature stress, and fewer component failures.
This upgrade shows how STW9NK90Z MOSFETs by STMicroelectronics can provide powerful switching performance in green energy applications.
Download Datasheet for STW9NK90Z
Need detailed specs, thermal ratings, or pin configuration?
Download the STW9NK90Z Datasheet from Xon Electronics
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Why Buy from Xon Electronics?
Xon Electronics is your trusted source for STW9NK90Z MOSFETs by STMicroelectronics, with:
- 100% Original STMicroelectronics Components
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Worldwide Shipping – USA, India, Australia, Europe & more
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Bulk Order Discounts for OEMs and System Designers
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Expert Technical Integration Support
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Safe and Secure Online Transactions
Shop now at www.xonelec.com and get high-performance switching components delivered globally.
Conclusion
The STW9NK90Z MOSFETs by STMicroelectronics offer a superior combination of high-voltage handling, low gate charge, and thermal stability. Whether for solar energy systems, PFC circuits, or industrial motor drives, these MOSFETs are a top-tier choice for modern engineers. Available now at Xon Electronics with global delivery options and full datasheet access.
FAQs – STW9NK90Z MOSFET
Q1. What is the max voltage and current rating?
The MOSFET handles up to 900V and 6.8A continuous current.
Q2. What type of package does it come in?
It’s housed in a TO-247 through-hole package ideal for power applications.
Q3. Is the gate protected?
Yes, it includes a Zener diode for built-in gate protection.
Q4. Can I use this in a solar inverter?
Absolutely, it’s well-suited for PFC and energy conversion applications.
Q5. Where can I buy it globally?
Order now from www.xonelec.com with delivery to USA, India, Australia, Europe, and other countries.