Overview
The STTH108 is a high voltage ultrafast rectifier produced by STMicroelectronics. It utilizes ST's ultrafast high voltage planar technology, making it particularly suited for various power switching applications. This rectifier is designed for free-wheeling, clamping, snubbering, and demagnetization in power supplies and other similar applications. It is known for its high reliability, low forward voltage drop, and high surge current capability, which are crucial for efficient and stable operation in demanding environments.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| VRRM (Repetitive peak reverse voltage) | 800 | V |
| V(RMS) (RMS voltage) | 560 | V |
| IF(AV) (Average forward current) | 1 | A |
| IFSM (Forward surge current) | 25 A (DO-41), 20 A (SMA) | A |
| Tstg (Storage temperature range) | -50 to +175 | °C |
| Tj (Maximum operating junction temperature) | 175 | °C |
| VF (Forward voltage drop) | 1.65 V (Tj = 25°C), 1.25 V (Tj = 150°C) | V |
| IR (Reverse leakage current) | 5 µA (Tj = 25°C), 50 µA (Tj = 125°C) | µA |
| trr (Reverse recovery time) | 75 ns | ns |
| tfr (Forward recovery time) | 200 ns | ns |
| Package/Case | DO-41, SMA |
Key Features
- Low forward voltage drop: Ensures minimal energy loss during operation.
- High reliability: Designed for long-term stability and performance in various applications.
- High surge current capability: Can handle high current surges, making it suitable for demanding environments.
- Soft switching for reduced EMI disturbances: Minimizes electromagnetic interference, ensuring smoother operation.
- Planar technology: Utilizes ST's advanced planar technology for enhanced performance and efficiency.
Applications
The STTH108 is specifically designed for various power switching applications, including:
- Free-wheeling: Used in circuits where the diode acts as a path for current when the main switch is turned off.
- Clamping: Helps in voltage regulation and protection against voltage spikes.
- Snubbering: Reduces voltage spikes and oscillations in switching circuits.
- Demagnetization in power supplies: Ensures proper demagnetization of inductive components in power supply circuits.
- Other power switching applications: Suitable for any application requiring high voltage, ultrafast recovery, and low forward voltage drop.
Q & A
- Q: What is the repetitive peak reverse voltage of the STTH108?
A: The repetitive peak reverse voltage (VRRM) of the STTH108 is 800 V.
- Q: What is the average forward current rating of the STTH108?
A: The average forward current (IF(AV)) of the STTH108 is 1 A.
- Q: What is the maximum operating junction temperature for the STTH108?
A: The maximum operating junction temperature (Tj) for the STTH108 is 175°C.
- Q: What are the typical applications of the STTH108?
A: The STTH108 is typically used in free-wheeling, clamping, snubbering, and demagnetization in power supplies and other power switching applications.
- Q: What is the forward voltage drop of the STTH108 at 25°C?
A: The forward voltage drop (VF) of the STTH108 at 25°C is 1.65 V.
- Q: What is the reverse recovery time of the STTH108?
A: The reverse recovery time (trr) of the STTH108 is 75 ns.
- Q: What are the package options for the STTH108?
A: The STTH108 is available in DO-41 and SMA packages.
- Q: Is the STTH108 suitable for high surge current applications?
A: Yes, the STTH108 has a high surge current capability, with a maximum forward surge current of 25 A for DO-41 and 20 A for SMA packages.
- Q: Does the STTH108 reduce EMI disturbances?
A: Yes, the STTH108 features soft switching, which reduces electromagnetic interference (EMI) disturbances.
- Q: What is the storage temperature range for the STTH108?
A: The storage temperature range (Tstg) for the STTH108 is -50°C to +175°C.
