The IXYS VUO25-18NO8 is a three-phase bridge rectifier module delivering 25A average output current at a 1800V repetitive peak reverse voltage (VRRM). Constructed in IXYS's established NO8 package format, the module integrates a full three-phase bridge topology into a single, isolated baseplate assembly. This configuration simplifies PCB and heatsink design while maintaining the thermal and electrical integrity required in high-voltage industrial power conversion systems. The 1800V voltage class makes it particularly suited for applications operating from high-line three-phase mains where transient overvoltage margin is essential.

The VUO25-18NO8 is a proven solution across a broad spectrum of industrial and commercial power electronics. Typical deployment environments include AC motor drive front-ends, regenerative and non-regenerative DC bus rectifiers, industrial UPS and battery charger systems, welding equipment power stages, elevator drive converters, and field excitation rectifiers in rotating machinery. Its high VRRM rating gives design engineers the headroom needed when operating on 690V AC mains or in installations with elevated line transients, reducing the need for additional surge suppression components at the rectifier stage.

Quick Reference: VUO25-18NO8

Key Features of the VUO25-18NO8:

• 1800V VRRM rating provides robust transient overvoltage margin for high-line three-phase 480V and 690V AC mains applications
• 25A average forward output current supports mid-range drive and rectifier power stage designs without requiring parallel module configurations
• Integrated three-phase bridge topology in a single NO8 package reduces component count, simplifies heatsink mounting, and minimizes interconnect inductance
• Isolated copper baseplate construction enables direct heatsink mounting with electrical isolation, improving thermal management in densely packed power assemblies
• Low forward voltage drop diodes minimize conduction losses and reduce heatsink size requirements in continuous-duty industrial environments
• Compatible with standard NO8 footprint for drop-in replacement and cross-reference into existing PCB and busbar layouts

With a published factory lead time of 99 weeks for new production, the VUO25-18NO8 presents a serious procurement challenge for MRO teams, OEM production lines, and field service operations that cannot afford extended downtime. IXYS modules in the 1800V class are increasingly difficult to source through standard distribution channels as legacy designs remain in service well beyond original product lifecycle projections. ATI Accurate Technology maintains strategic stock of hard-to-find, long-lead-time, and obsolete power semiconductors precisely for these situations, allowing engineers and buyers to resolve urgent requirements without waiting on factory queues.

ATI Accurate Technology is based in Palmetto, Florida and ships same-day on orders placed before 5PM EST. Our inventory specialists are ready to assist with cross-references, datasheets, and volume pricing for the VUO25-18NO8 and related IXYS rectifier modules. Contact us directly at 239-734-7566 or sales@igbts.us to confirm availability, request a quote, or discuss application requirements. Volume discounts are available for OEM and MRO customers.