C784DB

SCRs - Modules Overview

The Powerex Inc. C784DB is a single-phase Silicon Controlled Rectifier (SCR) module designed for high-power industrial applications. It features a TO-200AF chassis mount package with a TBK disc configuration. The device supports a repetitive peak reverse voltage of 4200 V and an average on-state current of 1650 A. Its maximum RMS on-state current rating is 2590 A, providing robust performance for phase control and rectification tasks requiring high voltage and current handling capabilities.

SCRs - Modules Feature Summary

• Single-element silicon controlled rectifier structure optimized for high-voltage phase control
• Chassis mount design utilizing TO-200AF mechanical interface for secure installation
• TBK disc construction providing thermal stability and efficient heat dissipation
• High surge current capability supporting demanding industrial power switching environments

SCRs - Modules Applications

• Industrial motor drive systems requiring high-voltage phase control
• Resistive and inductive load switching in heavy machinery
• Power regulation circuits for large-scale industrial heating elements
• DC to AC inversion stages in high-power converter topologies

SCRs - Modules Procurement Notes

Verify the specific datasheet version from Powerex Inc. to confirm exact thermal resistance values and gate trigger parameters, as these can vary between manufacturing batches. Ensure that the mounting surface preparation meets the required flatness specifications for the TO-200AF package to maintain optimal thermal contact. Cross-reference the part number with official distributor catalogs to confirm availability status and lead times before finalizing procurement plans.

SCRs - Modules Selection Notes

Select this component when system requirements demand a 4200 V blocking voltage and sustained currents exceeding 1600 A. The TO-200AF form factor is suitable for applications where chassis mounting provides necessary structural support and thermal management. Evaluate the thermal impedance characteristics against the intended heatsink solution to ensure junction temperatures remain within safe operating limits during continuous operation.

SCRs - Modules Part Context

The C784DB belongs to Powerex's high-power thyristor product line, specifically engineered for robust industrial power electronics. It utilizes advanced silicon wafer processing to achieve high voltage blocking capabilities while maintaining reliable switching characteristics. This module represents a standard solution for applications requiring discrete SCR components with high current carrying capacity and rugged mechanical packaging.

SCRs - Modules Replacement Considerations

Direct replacements include the C784CM and C784DE models from Powerex, which share similar electrical ratings and mechanical footprints. Verify compatibility by comparing the specific voltage and current derating curves provided in the respective datasheets. Ensure that any substitute maintains the same TO-200AF mounting interface and thermal characteristics to fit existing system designs without modification.