MDD44-18N1B

Overview

The MDD44-18N1B is a silicon standard rectifier module manufactured by IXYS. It features a single-phase bridge configuration housed in a TO-240AA package with screw mount installation. The device supports a reverse voltage of 1.8 kV and an average forward current of 44 A. Key electrical parameters include a maximum forward voltage of 1.6 V at rated conditions. The module operates within a junction temperature range of -40°C to +125°C and provides an isolation voltage of 3600 V between terminals and the base plate.

Feature Summary

• Utilizes direct copper bonded aluminum oxide ceramic base plates for efficient thermal management and reliable heat dissipation.
• Incorporates planar passivated chips to ensure robust performance and long-term stability under varying electrical loads.
• Features isolated mounting capabilities with high isolation voltage ratings, enhancing safety in industrial applications.

Applications

• DC power equipment supplies
• DC supply for PWM inverters
• Field supply for DC motors
• Battery DC power supplies

Procurement Notes

Verify the specific suffix N1B against official IXYS documentation to confirm pinout and mechanical dimensions. Ensure the procurement channel provides valid traceability documents. Confirm RoHS compliance status through the latest datasheet revision. Check for any product change notifications that may affect physical or electrical characteristics prior to finalizing orders.

Selection Notes

Select this module for applications requiring a compact single-phase bridge rectifier with high voltage blocking capability. The TO-240AA package facilitates easy integration into existing screw-mount designs. Consider the thermal resistance and operating temperature limits when designing heatsinking solutions. Verify that the 1.8 kV rating exceeds the peak inverse voltage expected in the circuit operation.

Part Context

This component belongs to the MDD series of standard rectifier modules from IXYS. The series is designed for general-purpose power conversion tasks. Similar parts in the lineup vary primarily by current and voltage ratings while maintaining compatible packaging standards. This specific model offers a balance of moderate current handling and high voltage resilience suitable for various industrial power systems.

Replacement Considerations

Cross-reference with other IXYS MDD series variants such as MDD44-16N1B or MDD44-14N1B if lower voltage ratings are acceptable. Ensure substitute parts match the TO-240AA footprint and screw mounting pattern. Verify that alternative components meet or exceed the required 3600 V isolation voltage and thermal performance specifications.