Overview
The STTH108RL, produced by STMicroelectronics, is a high voltage ultrafast rectifier diode that utilizes ST's ultrafast high voltage planar technology. This diode is specifically designed for applications such as free-wheeling, clamping, snubbering, and demagnetization in power supplies and other power switching circuits. It is known for its high reliability, low forward voltage drop, and high surge current capability, making it an ideal choice for various industrial and power management applications.
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 (Tl = 110°C, δ = 0.5 for SMA; Tl = 130°C, δ = 0.5 for DO-41) |
| IFSM (Forward surge current) | 20 A (SMA), 25 A (DO-41) | A (t = 8.3 ms) |
| Tstg (Storage temperature range) | -50 to +175 | °C |
| Tj (Maximum operating junction temperature) | 175 | °C |
| VF (max) (Forward voltage drop) | 1.25 | V (IF = 1 A, Tj = 25°C) |
| IR (Reverse leakage current) | 5 µA (VR = 800V, Tj = 25°C); 50 µA (VR = 800V, Tj = 125°C) | µA |
| Rth(j-l) (Junction to lead thermal resistance) | 30 °C/W (SMA), 45 °C/W (DO-41) | °C/W (Lead length = 10 mm) |
| Rth(j-a) (Junction to ambient thermal resistance) | 110 °C/W (DO-41) | °C/W (Lead length = 10 mm) |
Key Features
- Low forward voltage drop
- High reliability
- High surge current capability
- Soft switching for reduced EMI disturbances
- Planar technology
Applications
The STTH108RL is suited for various power management and switching applications, including:
- Free-wheeling
- Clamping
- Snubbering
- Demagnetization in power supplies
- Other power switching applications
Q & A
- What is the repetitive peak reverse voltage (VRRM) of the STTH108RL?
The VRRM of the STTH108RL is 800 V. - What is the average forward current (IF(AV)) of the STTH108RL?
The IF(AV) is 1 A for both SMA and DO-41 packages, with specific temperature and duty cycle conditions. - What is the maximum forward surge current (IFSM) of the STTH108RL?
The IFSM is 20 A for SMA and 25 A for DO-41, with a pulse duration of 8.3 ms. - What is the maximum operating junction temperature (Tj) of the STTH108RL?
The maximum Tj is 175 °C. - What is the forward voltage drop (VF) of the STTH108RL?
The VF is 1.25 V at IF = 1 A and Tj = 25°C. - What are the typical applications of the STTH108RL?
The STTH108RL is typically used in free-wheeling, clamping, snubbering, and demagnetization in power supplies and other power switching applications. - What is the storage temperature range (Tstg) of the STTH108RL?
The Tstg range is from -50 °C to +175 °C. - What is the thermal resistance from junction to lead (Rth(j-l)) of the STTH108RL?
The Rth(j-l) is 30 °C/W for SMA and 45 °C/W for DO-41, with a lead length of 10 mm. - Does the STTH108RL have any special packaging options?
Yes, it is available in both DO-41 and SMA packages, with different packing types such as Ammopack and Tape & Reel. - Is the STTH108RL suitable for high-frequency applications?
Yes, it is designed to handle high-frequency switching applications with reduced EMI disturbances due to its soft switching characteristics.
