The IXYS MDD26-18N1B is a high-voltage diode module engineered for industrial-grade rectification and freewheeling duties. Rated at 26A average output current and 1800V repetitive peak reverse voltage (VRRM), this module delivers dependable blocking performance and low forward voltage drop in a compact, isolated package. IXYS designed the MDD26-18N1B for harsh power conversion environments where thermal stability and long-term reliability are non-negotiable. The isolated baseplate simplifies heatsink mounting and helps maintain electrical safety margins across the full operating temperature range.

The MDD26-18N1B is well suited for a broad range of industrial and commercial power electronics applications. Engineers specify this module in three-phase bridge rectifiers, soft-start drive systems, UPS and battery charging infrastructure, welding power supplies, and regenerative braking circuits. Its 1800V voltage rating provides critical headroom in medium-voltage AC input designs where transient overvoltage events are common. The module also serves as a freewheeling diode in IGBT and thyristor-based inverter stages, protecting switching devices from inductive kickback and extending overall system service life.

Quick Reference: MDD26-18N1B

Key Features of the MDD26-18N1B:

• 1800V repetitive peak reverse voltage (VRRM) provides generous headroom for medium-voltage AC input rectification and transient suppression
• 26A average output current rating supports continuous duty in industrial converter and inverter stages without derating
• Isolated copper baseplate allows direct mounting to a heatsink without an intermediate insulating pad, simplifying thermal management
• Low forward voltage drop (VF) minimizes conduction losses and reduces heatsink requirements in high-duty-cycle applications
• Robust encapsulation and passivated junction construction ensure stable reverse leakage characteristics over a wide junction temperature range
• Industry-standard module footprint ensures drop-in compatibility with existing PCB and busbar layouts, reducing redesign time during maintenance and repair

With a factory lead time of 42 weeks on new production, the MDD26-18N1B presents a genuine procurement challenge for maintenance teams managing unplanned downtime or time-sensitive project schedules. IXYS diode modules at this voltage class have historically experienced extended backlogs, and end-of-life risk adds further urgency for facilities that rely on legacy drive and rectifier platforms. Sourcing from an established stocking distributor is the fastest path to keeping critical systems running without committing to multi-month wait times or compromising on part authenticity.

ATI Accurate Technology, based in Palmetto, Florida, stocks the MDD26-18N1B new OEM and ships same-day on orders placed before 5PM EST. We specialize in IGBTs, diodes, thyristors, and rectifier modules—including hard-to-find and long-lead-time parts just like this one. Volume pricing is available for MRO stocking orders and OEM procurement. Contact our team today at 239-734-7566 or sales@igbts.us to confirm availability and get a quote.