Overview
The STP9NK50Z is a high-performance N-channel MOSFET from STMicroelectronics, part of the SuperMESH™ series. This device is optimized using ST's strip-based PowerMESH™ layout, which significantly reduces on-resistance and enhances dv/dt capability. The STP9NK50Z is designed for high current, high speed switching applications and is particularly suited for off-line power supplies, adaptors, and power factor correction (PFC) circuits.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Drain-source Voltage (VDS) | 500 | V |
| Drain-gate Voltage (VDGR) | 500 | V |
| Gate-source Voltage (VGS) | ±30 | V |
| Drain Current (continuous) at TC = 25°C (ID) | 7.2 | A |
| Drain Current (continuous) at TC = 100°C (ID) | 4.5 | A |
| Drain Current (pulsed) (IDM) | 28.8 | A |
| Total Dissipation at TC = 25°C (PTOT) | 110 | W |
| Static Drain-source On Resistance (RDS(on)) | < 0.85 | Ω |
| Gate Threshold Voltage (VGS(th)) | 3 - 4.5 | V |
| Thermal Resistance Junction-case (Rthj-case) | 1.14 | °C/W |
| Thermal Resistance Junction-ambient (Rthj-amb) | 62.5 | °C/W |
| Maximum Lead Temperature For Soldering Purpose (Tl) | 300 | °C |
Key Features
- Extremely high dv/dt capability
- 100% avalanche tested
- Gate charge minimized
- Very low intrinsic capacitances
- Very good manufacturing repeatability
- Built-in back-to-back Zener diodes for gate-source protection
- Low on-resistance (RDS(on)) of less than 0.85 Ω
- High drain current of up to 7.2 A
Applications
- High current, high speed switching
- Off-line power supplies
- Adaptors
- Power factor correction (PFC) circuits
- Lighting applications
Q & A
- What is the maximum drain-source voltage of the STP9NK50Z?
The maximum drain-source voltage is 500 V. - What is the typical on-resistance of the STP9NK50Z?
The typical on-resistance is less than 0.85 Ω. - What is the maximum continuous drain current at 25°C?
The maximum continuous drain current at 25°C is 7.2 A. - What is the gate-source voltage range?
The gate-source voltage range is ±30 V. - Does the STP9NK50Z have built-in protection for the gate-source?
Yes, it has built-in back-to-back Zener diodes for gate-source protection. - What are the typical applications of the STP9NK50Z?
Typical applications include high current, high speed switching, off-line power supplies, adaptors, and PFC circuits. - What is the thermal resistance junction-case for the TO-220 package?
The thermal resistance junction-case for the TO-220 package is 1.14 °C/W. - What is the maximum lead temperature for soldering purpose?
The maximum lead temperature for soldering purpose is 300 °C. - Is the STP9NK50Z 100% avalanche tested?
Yes, the STP9NK50Z is 100% avalanche tested. - What is the gate threshold voltage range?
The gate threshold voltage range is 3 to 4.5 V.
