CD431699C

SCRs - Modules Overview

The Powerex CD431699C is a dual SCR isolated POW-R-BLOK module rated for 100 Amperes and up to 1800 Volts. It features electrically isolated heatsinking, compression bonding for increased power cycling capability, and low thermal impedance. The module supports phase control applications with an RMS forward current of 173 A at TC=85°C and an average forward current of 110 A at TC=85°C. Peak on-state voltage is 1.83 V at ITM=270A, with a maximum repetitive peak blocking voltage of 1800 V. Thermal resistance from junction to case is 0.25 °C/W per junction, and the isolation voltage is 2500 Vrms.

SCRs - Modules Feature Summary

• Electrically isolated packaging allows direct mounting on common heatsinks without additional insulation components
• Compression bonded construction enhances power cycling capability and reliability
• Low thermal impedance design improves overall current handling capacity

SCRs - Modules Applications

• Bridge circuits
• AC & DC motor drives
• Battery supplies
• Power supplies
• Large IGBT circuit front ends
• Lighting control
• Heat & temperature control
• Welders

SCRs - Modules Procurement Notes

Verify the complete nine-digit part number against official documentation before ordering. Confirm specific voltage ratings (e.g., 1600V vs 1800V) as suffixes may indicate variations within the CD43__99C family. Ensure compliance with RoHS standards and check for UL recognition status if required by your application specifications.

SCRs - Modules Selection Notes

Select this module for high-power phase control applications requiring electrical isolation. Consider the 173 A RMS current rating at 85°C case temperature when designing thermal management systems. Verify that the gate trigger requirements (30-100 mA, 0.75-2.5 V) align with your driver circuit capabilities. Ensure the operating temperature range of -40 to +125°C meets environmental demands.

SCRs - Modules Part Context

The CD431699C belongs to Powerex's Dual SCR Isolated POW-R-BLOK series, designed for robust industrial power conversion. This specific variant offers 100 A current handling with voltage options up to 1800 V. The series is characterized by its flange-mount package and compression-bonded technology, providing a reliable solution for demanding thyristor applications in heavy industry.

SCRs - Modules Replacement Considerations

Direct replacements should be sought from the same POW-R-BLOK series or equivalent isolated dual SCR modules with matching current and voltage ratings. Verify pinout compatibility, specifically the M5 mounting screw configuration and terminal layout. Ensure thermal resistance and gate drive characteristics are comparable to maintain system performance.