STW9NK90Z Overview
The STW9NK90Z is a high-voltage N-channel power MOSFET specifically designed for efficient switching and power management in industrial and automotive applications. Featuring a 900 V drain-source voltage and low on-resistance, this device enables superior energy efficiency and thermal performance in demanding environments. Its robust construction ensures reliable operation under high voltage stress, making it ideal for power conversion and motor drive systems. Engineers and sourcing specialists will appreciate the device??s balance of performance and ruggedness, available through IC Manufacturer.
STW9NK90Z Technical Specifications
| Parameter | Specification |
|---|---|
| Type | N-channel MOSFET |
| Drain-Source Voltage (VDS) | 900 V |
| Continuous Drain Current (ID) | 9.5 A (at 25??C) |
| On-Resistance (RDS(on)) | 0.55 ?? (Max at VGS=10 V, ID=4.5 A) |
| Gate Threshold Voltage (VGS(th)) | 3.0 V (Min) to 5.0 V (Max) |
| Gate Charge (Qg) | 36 nC (typical) |
| Maximum Power Dissipation (PD) | 55 W |
| Operating Junction Temperature (TJ) | -55??C to +150??C |
| Package | TO-220 |
STW9NK90Z Key Features
- High voltage capability: Supports up to 900 V drain-source voltage, enabling use in high-voltage power conversion circuits.
- Low on-resistance: Minimizes conduction losses, improving overall efficiency and reducing heat generation during operation.
- Robust thermal performance: Capable of handling up to 55 W power dissipation, ensuring reliable operation under high power stress.
- Fast switching characteristics: Low gate charge facilitates rapid switching, beneficial for high-frequency applications and reducing switching losses.
Typical Applications
- Switch-mode power supplies (SMPS): Optimal for high-voltage power conversion stages requiring efficient switching and thermal reliability.
- Motor control circuits: Suitable for driving motors in industrial and automotive systems due to its high voltage and current capabilities.
- Power factor correction (PFC) circuits: Supports efficient correction of power factor in AC-DC converters for improved energy utilization.
- Inverters and UPS systems: Enables robust and efficient operation in uninterruptible power supplies and inverter systems.
STW9NK90Z Advantages vs Typical Alternatives
This MOSFET excels in delivering a combination of high voltage tolerance and low on-resistance, which reduces losses compared to typical alternatives. Its TO-220 package allows efficient heat dissipation, increasing reliability under continuous high-power conditions. The device??s competitive gate charge values further enhance switching efficiency, making it a preferred choice for engineers seeking balance between sensitivity, power handling, and integration ease in industrial-grade power electronics.
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STW9NK90Z Brand Info
The STW9NK90Z is manufactured by STMicroelectronics, a leading global semiconductor company known for its innovation in power management solutions. STMicroelectronics specializes in high-performance power MOSFETs designed to meet industrial and automotive requirements. This product benefits from ST??s expertise in delivering reliable, energy-efficient semiconductor devices with proven quality and global support infrastructure.
FAQ
What is the maximum drain-source voltage rating of the STW9NK90Z?
The device is rated for a maximum drain-source voltage (VDS) of 900 V, allowing it to operate safely in high-voltage circuits such as power supplies and motor drives.
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What package is used for the STW9NK90Z, and how does it affect thermal performance?
It is housed in a TO-220 package, which facilitates efficient heat dissipation through a metal tab that can be attached to a heat sink. This packaging supports its high power dissipation rating of 55 W






