The IXYS MDD72-18N1B is a dual diode module rated at 72 amperes and 1800 volts, engineered for high-voltage rectification, freewheeling, and clamping functions in demanding power conversion circuits. Its robust silicon construction and isolated baseplate deliver stable thermal performance across industrial operating conditions. With an 1800V blocking voltage rating, this module is well-suited for applications where line-side transients and regenerative voltage spikes require wide safety margins. The MDD72-18N1B follows the established IXYS MD-series footprint, simplifying drop-in replacement in existing designs.

The MDD72-18N1B sees broad deployment in industrial AC/DC converters, motor drive front-ends, soft-start rectifier bridges, UPS systems, and welding power supplies. Its high reverse voltage rating makes it particularly valuable in medium-voltage drive topologies where 690V AC inputs or regenerative braking demand extended blocking capability. Renewable energy inverters, traction power supplies, and industrial heating equipment also commonly rely on this module series for reliable, long-service rectification in thermally demanding environments where uptime is critical.

Quick Reference: MDD72-18N1B

Key Features of the MDD72-18N1B:

• 1800V repetitive peak reverse voltage (VRRM) for wide margin in high-voltage rectifier and clamping circuits
• 72A average forward current (IFAV) supporting continuous duty rectification in industrial drive and converter designs
• Dual diode configuration in a single isolated-baseplate module reduces component count and simplifies thermal management
• Low forward voltage drop minimizes conduction losses and heat generation at rated current
• Isolated copper baseplate enables direct heatsink mounting without additional insulating hardware, streamlining assembly
• Compatible with standard IXYS MD-series PCB footprint and mounting geometry for straightforward retrofits

With a factory lead time of 38 weeks, sourcing the MDD72-18N1B through normal distribution channels can create serious production and maintenance delays. For maintenance engineers facing unplanned downtime or procurement teams managing critical spares, waiting nearly a year for new stock is not a viable option. ATI Accurate Technology maintains independent inventory of hard-to-find and long-lead-time IXYS modules precisely for these situations, providing a reliable source when factory channels cannot meet urgent timelines. Verify current stock levels before your next scheduled outage or production run.

ATI Accurate Technology is a power semiconductor distributor located in Palmetto, Florida, stocking IGBTs, diodes, thyristors, and rectifier modules including obsolete and long-lead-time parts. Orders placed before 5PM EST ship same day. Contact our team for volume pricing, cross-reference assistance, or application support: 239-734-7566 | sales@igbts.us.