The IXYS VUO34-18NO1 is a three-phase bridge rectifier module designed for demanding industrial AC-to-DC conversion applications. Rated at 34A average output current and 1800V repetitive peak reverse voltage (VRRM), this module integrates a full six-diode bridge configuration within a single isolated baseplate housing. The high voltage rating makes it particularly well-suited for environments where line transients, overvoltage conditions, or 690VAC three-phase input supplies demand substantial voltage headroom. Engineers specify this device for its balance of current handling capability, thermal performance, and packaging convenience in space-constrained panel builds.

The VUO34-18NO1 sees wide deployment across industrial and commercial power conversion equipment. Typical applications include AC variable frequency drives (VFDs), servo drive front-end rectifiers, industrial UPS systems, welding power supplies, soft starters, and elevator drive systems. Its high blocking voltage makes it a preferred choice in European 690VAC installations and marine or offshore equipment where ruggedized, high-reliability rectification is mandatory. The module's isolated copper baseplate simplifies mounting to heatsinks without additional isolation hardware, reducing assembly time and improving thermal management in production builds.

Quick Reference: VUO34-18NO1

Key Features of the VUO34-18NO1:

• 1800V VRRM rating provides substantial margin above 690VAC three-phase line voltage, accommodating transients and surge conditions
• 34A average rectified output current with full three-phase bridge topology eliminates the need for external diode arrays
• Isolated copper baseplate construction allows direct heatsink mounting without electrical isolation pads, simplifying thermal stack design
• Compact single-package integration reduces PCB/busbar footprint and assembly complexity versus discrete diode configurations
• Low forward voltage drop across diode elements contributes to reduced conduction losses and improved overall converter efficiency
• Compatible with standard IXYS VUO-series footprint, enabling drop-in replacement in existing drive and rectifier designs

With a published factory lead time of 99 weeks for new production, the VUO34-18NO1 represents exactly the type of long-lead-time component that can halt a repair, delay a production line restart, or stall a new equipment build. IXYS modules in the VUO series have historically presented extended procurement challenges, particularly for MRO and field service teams. Waiting on factory allocation is rarely an option when equipment downtime costs are mounting. Sourcing from a stocking distributor with verified new OEM inventory is the most reliable path to keeping projects on schedule and machines running.

ATI Accurate Technology, based in Palmetto, Florida, maintains stock of the VUO34-18NO1 and ships same-day on orders placed before 5PM EST. We specialize in hard-to-find, long-lead-time, and obsolete power semiconductors including IGBTs, thyristors, diodes, and rectifier modules. Volume pricing is available. Contact our team directly at 239-734-7566 or sales@igbts.us to confirm availability, request a quote, or discuss application requirements.