Overview
The Westcode 23-31-702200 9129 is a premium thyristor (SCR) manufactured by Westcode Semiconductors, now part of IXYS/Littelfuse. This presspack-style thyristor is engineered for demanding industrial and power transmission applications where high current handling and voltage control are critical. The Westcode 23-31-702200 combines robust design with low on-state voltage drop, making it ideal for DC drive converters, soft starters, and phase control circuits.
Key Features
- High power handling capability suitable for medium and high-voltage applications
- Optimized for low on-state voltage drop and minimal conduction losses
- Industry-standard presspack ceramic housing for reliable thermal management
- Suitable for line frequencies up to 500 Hz operation
- Matched characteristics available for series and parallel device configurations
Technical Specifications
- Manufacturer: Westcode Semiconductors (IXYS/Littelfuse)
- Part Number: 23-31-702200
- Device Type: Thyristor SCR (Silicon Controlled Rectifier)
- Housing Style: Presspack disc design with ceramic case
- Typical Application Voltage Range: Medium to high voltage (3.2 kV to 6.5 kV class)
- Operating Frequency: Up to 500 Hz
- Mounting: Pressure contact terminals for heatsink integration
Typical Applications
Westcode 23-31-702200 thyristors are engineered for:
- Medium voltage DC drives and variable speed drives
- Power transmission and grid control systems
- Soft starters and motor control circuits
- High-frequency inverters and converters for industrial power supplies
- Excitation systems and transfer switches in power generation
- Phase control and power regulation applications requiring low switching losses
Compatibility & Replacements
Compatible With
- High-power industrial converters and rectifier systems
- Medium voltage soft starter assemblies
- Thyristor cooling modules (air-cooled, water-cooled heatsinks)
- Series and parallel thyristor stack configurations
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. Part number variants within the Westcode 23-31 series may have different electrical characteristics. Contact a distributor or engineering team to confirm direct replacement with legacy equipment or alternative models.
Works With
- Industrial power control systems from Siemens, ABB, General Electric, and other major OEMs
- Custom thyristor driver and gate control circuits
- Standard presspack heatsink assemblies and thermal management systems
- Legacy and modern power conversion architectures
