MMO175-08IO7

Overview

The IXYS MMO175-08IO7 is a thyristor controller module designed for AC mains frequency applications. It features an RMS current rating of 175 A at 85°C case temperature and supports a repetitive reverse voltage (VRRM) of 800 V. The device utilizes planar glass passivated chips to ensure low forward voltage drop and high power density. Key electrical characteristics include a maximum non-repetitive surge current of 1600 A at 45°C junction temperature for 8.3 ms, and a critical rate of rise of on-state current ((di/dt)cr) of 150 A/µs under repetitive conditions. Thermal resistance from junction to case is specified at 0.5 K/W per thyristor.

Feature Summary

• Integrated isolation voltage capability of 3000 V~ for safe operation in mains circuits
• Planar glass passivated chip technology providing robust performance and low forward voltage drop
• Designed for easy mounting using two screws with lead suitable for PC board soldering

Applications

• Switching and control of single and three-phase AC circuits
• Light and temperature control systems
• Soft-start AC motor controllers
• Solid state switches

Procurement Notes

Verify the specific voltage variant required, as the MMO175 series includes 800 V, 1200 V, and 1600 V options. Confirm that the 800 V rating aligns with the system's peak reverse voltage requirements. Ensure thermal management solutions accommodate the specified thermal resistance values. Check for compliance with IEC standards if applicable to the target market. Validate mounting torque specifications during assembly to prevent mechanical failure.

Selection Notes

Select this module for applications requiring high current handling at mains frequencies. Consider the 175 A RMS rating against the actual load current and duty cycle. Evaluate the thermal environment to ensure the case temperature remains within limits. Compare the surge current capabilities with potential fault conditions. Assess the physical dimensions and mounting style for integration into the existing chassis or PCB layout.

Part Context

This component belongs to the IXYS MMO175 series of AC controller modules. The series offers various voltage ratings including 800 V, 1200 V, and 1600 V. These modules are engineered for high power density and improved temperature cycling performance. They are commonly used in industrial power control applications where reliable switching of AC loads is necessary.

Replacement Considerations

Public confirmed substitute part numbers: MLO175-08IO7.