Overview
The STW20NB50 is a high-voltage power MOSFET designed by STMicroelectronics, utilizing the latest high voltage technology. Although this component is currently obsolete and no longer manufactured, it was renowned for its outstanding performance and reliability. The STW20NB50 was particularly suited for applications requiring high voltage handling and robust avalanche characteristics.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| VDS (Drain-Source Voltage) | 800 | V |
| VGS (Gate-Source Voltage) | ±20 | V |
| ID (Continuous Drain Current) | 20 | A |
| PD (Total Dissipation at TC = 25°C) | 250 | W |
| RDS(on) (On-State Drain-Source Resistance) | 0.55 | Ω |
| TJ (Junction Temperature) | -55 to 150 | °C |
Key Features
The STW20NB50 features several key attributes that made it a preferred choice in its category:
- High Voltage Capability: With a drain-source voltage (VDS) of 800V, it is ideal for high-voltage applications.
- Zener Protection: The MOSFET includes Zener protection, enhancing its robustness against voltage spikes.
- Avalanche Tested: 100% avalanche tested to ensure reliability and durability under extreme conditions.
- Low On-State Resistance: An on-state drain-source resistance (RDS(on)) of 0.55 Ω, which minimizes power losses.
Applications
The STW20NB50 was widely used in various high-voltage applications, including:
- Flyback Converters: Its high voltage and low on-state resistance made it suitable for flyback converter designs.
- LED Lighting: The MOSFET’s robust avalanche characteristics and high voltage handling capabilities made it an excellent choice for LED lighting systems.
- Power Supplies: It was also used in power supply units where high reliability and efficiency are critical.
Q & A
- What is the maximum drain-source voltage (VDS) of the STW20NB50?
800V
- Is the STW20NB50 still in production?
No, the STW20NB50 is obsolete and no longer manufactured.
- What is the continuous drain current (ID) of the STW20NB50?
20A
- What is the on-state drain-source resistance (RDS(on)) of the STW20NB50?
0.55 Ω
- What are some common applications of the STW20NB50?
Flyback converters, LED lighting, and power supplies.
- Does the STW20NB50 have Zener protection?
Yes, it includes Zener protection.
- What is the junction temperature range of the STW20NB50?
-55 to 150°C
- Is the STW20NB50 100% avalanche tested?
Yes, it is 100% avalanche tested.
- Where can I find substitutes for the STW20NB50?
Substitutes can be found on websites like Digi-Key, Mouser, and other electronics distributors.
- What is the total dissipation at TC = 25°C for the STW20NB50?
250W
