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Product Detailed Parameters
- Description：SCR 1.2KV 25A TO220AB
- Series：-
- Mfr：Vishay General Semiconductor - Diodes Division
- Package：Tube
- Voltage - Off State：1.2 kV
- 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 25TTS12 is a phase control silicon controlled rectifier (SCR) from the High Voltage Series, housed in a TO-220AB package. It features a maximum repetitive peak reverse voltage of 1200 V and an average on-state current rating of 16 A. The device supports a non-repetitive surge current of 300 A at rated voltage and 350 A without voltage reapplied. Key electrical characteristics include a maximum on-state voltage drop of 1.25 V at 16 A, a holding current of 100 mA, and a gate trigger current of 45 mA at 25 °C. Operating junction temperature ranges from -40 °C to 125 °C.
Feature Summary
- Designed for medium power switching and phase control applications with reliable operation up to 125 °C junction temperature.
- Utilizes glass passivation technology for enhanced durability and performance in industrial environments.
- Engineered to be compatible with Vishay High Power Products input diodes, switches, and output rectifiers sharing identical package outlines.
Applications
- Input rectification circuits requiring soft start capabilities
- Single-phase bridge configurations
- Three-phase bridge configurations
Procurement Notes
Verify the specific voltage variant required, as the series includes both 800 V and 1200 V options. Confirm lead-free status if specified by ordering suffix. Ensure thermal management design accounts for the 1.1 °C/W junction-to-case resistance. Check for any regional distribution restrictions or obsolescence notices before finalizing procurement plans.
Selection Notes
Select this component for industrial-level phase control where high voltage blocking capability is essential. Consider the 1200 V rating for robustness against line transients. Evaluate thermal dissipation requirements based on the conduction angle and ambient conditions. Ensure gate drive circuitry can supply the necessary trigger current across the full operating temperature range.
Part Context
This SCR belongs to the 25TTS... High Voltage Series manufactured by Vishay High Power Products. The series is specifically engineered for medium power applications, offering a standardized TO-220AB footprint that facilitates integration with other Vishay power components. The product is designed and qualified for industrial level reliability standards.
Replacement Considerations
No public confirmed substitute part numbers are available in the provided documentation.
FAQ
What is the maximum rate of rise of off-state voltage (dV/dt) for the 25TTS12?
The maximum rate of rise of off-state voltage is 500 V/µs.
How does the gate trigger current vary with temperature?
The maximum required DC gate current to trigger decreases as temperature increases: 60 mA at -10 °C, 45 mA at 25 °C, and 20 mA at 125 °C.
What is the typical turn-off time for this device?
The typical turn-off time (tq) is 110 µs.
