MCD56-18IO8B

Overview

The MCD56-18IO8B is a silicon thyristor module manufactured by IXYS, designed for high-power industrial applications. It features a TO-240AA package with screw mount installation and provides an RMS output current of 56 A. The device supports a repetitive peak reverse voltage of 1800 V and handles a surge current rating of 1.6 kA. Key electrical parameters include a maximum gate trigger current of 100 mA, a maximum holding current of 200 mA, and a peak on-state voltage of 1.57 V. The module operates within a temperature range up to 125°C and weighs approximately 81 grams.

Feature Summary

• High-voltage blocking capability suitable for demanding power conversion environments
• Robust thermal management through isolated flange mounting in a standard TO-240AA housing
• Integrated diode configuration for phase leg or single-element rectification applications

Applications

• Industrial motor drives and variable frequency drives
• High-power DC-DC converters and power supplies
• Welding equipment and electrostatic precipitators

Procurement Notes

Verify the specific suffix 'IO8B' against official IXYS documentation to confirm pinout and internal configuration, as variations exist within the MCD series. Ensure compatibility with existing heatsinking infrastructure due to the TO-240AA form factor. Request RoHS compliance certificates and material declarations from authorized distributors prior to procurement to meet regulatory standards.

Selection Notes

Select this component when an 1800 V rating is required alongside a 56 A continuous current capacity. Compare against the MCC56-08IO8B if lower voltage ratings suffice, or consider the MCD56-16IO8B for 1600 V applications. Evaluate thermal resistance requirements based on the specific ambient conditions and cooling method employed in the target design.

Part Context

This part belongs to the IXYS MCD series of discrete semiconductor modules, which are widely used in medium to high-power electronics. The series typically includes various voltage and current ratings packaged in TO-240AA housings. These modules are engineered for reliability in harsh industrial environments, offering consistent performance across a wide operating temperature range.

Replacement Considerations

Direct substitutes may include the MCD56-16IO8B for slightly lower voltage applications or the MCC56-18IO8B if pinout compatibility is verified. Cross-referencing datasheets for thermal characteristics and gate trigger specifications is essential before substitution to ensure circuit integrity.