CS45-12IO1

Overview

The IXYS CS45-12IO1 is a phase control thyristor (SCR) housed in an isolated TO-247 package. It features a maximum repetitive peak reverse voltage of 1200 V and a rated average on-state current of 48 A at a case temperature of 75°C. The device supports a non-repetitive surge current of up to 560 A for 8.3 ms at zero volts. Key electrical parameters include a gate trigger current of 100 mA at 25°C, a holding current of 100 mA, and a peak forward voltage drop of 1.64 V at 80 A. The component operates within a junction temperature range of -40°C to +140°C.

Feature Summary

• Planar passivated chip design ensures long-term stability of blocking currents and voltages.
• Isolated mounting screw hole allows for easy installation without additional insulating hardware.
• Epoxy material meets UL 94V-0 flammability standards for enhanced safety.

Applications

• Motor control systems
• Power converters
• AC power controllers
• Switch-mode and resonant mode power supplies
• Light and temperature control circuits

Procurement Notes

Verify the specific version suffix against official documentation before procurement. The io1 designation indicates an isolated back surface configuration with a dedicated mounting hole. Confirm that the required isolation voltage and mounting torque specifications align with the system design requirements to ensure proper electrical safety and mechanical integrity during assembly.

Selection Notes

Select this component based on the 1200 V blocking capability and 48 A average current rating suitable for line frequency applications. Ensure the thermal management solution maintains the case temperature below 75°C to achieve the rated current. Verify that the gate drive circuit can supply the specified trigger current across the full operating temperature range from -40°C to 140°C.

Part Context

This part belongs to the CS 45 series of phase control thyristors manufactured by IXYS. The series includes variants with different voltage ratings, such as 800 V and 1600 V, all sharing similar current capabilities and the JEDEC TO-247 package format. The CS45-12IO1 specifically addresses applications requiring 1200 V blocking while maintaining standard mounting dimensions.

Replacement Considerations

Direct replacements must match the 1200 V rating, 48 A current capacity, and TO-247 isolated package. Verify equivalent thermal resistance and gate trigger characteristics. Cross-reference with other manufacturers' SCR offerings in the ISOPLUS 247 form factor to ensure pinout compatibility and performance parity.