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Product Detailed Parameters
- Description：SCR 800V 25A TO220AB
- Series：-
- Mfr：Vishay General Semiconductor - Diodes Division
- Package：Tube
- Voltage - Off State：800 V
- Voltage - Gate Trigger (Vgt) (Max)：2 V
- Current - Gate Trigger (Igt) (Max)：45 mA
- Current - Hold (Ih) (Max)：100 mA
- Current - Non Rep. Surge 50, 60Hz (Itsm)：350A @ 50Hz
- SCR Type：Standard Recovery
- Operating Temperature：-40°C ~ 125°C
- Grade：-
- Qualification：-
- Mounting Type：Through Hole
- Package / Case：TO-220-3
- Supplier Device Package：TO-220-3
- Voltage - On State (Vtm) (Max)：1.25 V
- Current - On State (It (AV)) (Max)：16 A
- Current - On State (It (RMS)) (Max)：25 A
- Current - Off State (Max)：500 µA
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Overview
The Vishay 25TTS08 is a phase control silicon controlled rectifier (SCR) from the High Voltage Series, housed in a TO-220AB package. It features glass passivation for reliable operation up to a junction temperature of 125 °C. The device supports a maximum repetitive peak reverse voltage (VRRM) and direct voltage (VDRM) of 800 V. It handles a maximum average on-state current of 16 A and an RMS current of 25 A. Non-repetitive surge current ratings reach 300 A with rated voltage reapplied and 350 A without reapplied voltage.
Feature Summary
- Glass passivation technology ensures stable performance at elevated temperatures
- Designed specifically for medium power switching and phase control applications
- Compatible with Vishay HPP input diodes, switches, and output rectifiers sharing identical package outlines
Applications
- Single-phase bridge rectification
- Three-phase bridge rectification
- Input rectification with capacitive input filters
- Soft start circuits
Procurement Notes
Verify the specific ordering suffix against the manufacturer's official documentation to confirm lead-free status and production variants. Ensure the selected component matches the required voltage rating and thermal characteristics for the intended application environment.
Selection Notes
Select this component based on its 800 V blocking capability and 16 A average current rating under specified thermal conditions. Consider the thermal resistance values and mounting torque requirements when designing the heatsink interface. Verify gate triggering parameters align with the driving circuit capabilities.
Part Context
This SCR belongs to the 25TTS... High Voltage Series designed by Vishay High Power Products. The series includes variants with different voltage ratings, such as the 25TTS12 which offers 1200 V blocking capability. All devices in this series share similar physical dimensions and thermal characteristics within the TO-220AB outline.
Replacement Considerations
Direct substitutes include other Vishay SCRs from the same series with matching voltage ratings, such as the 25TTS08STRL-M3 or 25TTS08S-M3. Cross-manufacturer replacements must match the TO-220AB package, 800 V rating, and comparable current handling specifications.
