The Vishay VSKN91/08 is a robust N-phase rectifier module delivering a 91A average output current rating at an 800V repetitive peak reverse voltage (VRRM). Built on Vishay's established VSKN platform, this module integrates multiple rectifier diode elements in a compact, isolated base package suitable for direct heatsink mounting. The low forward voltage drop and high thermal cycling capability make it a reliable choice for demanding continuous-duty applications where efficiency and long service life are non-negotiable requirements.

The VSKN91/08 is well suited for three-phase industrial rectifier bridges, variable frequency drive (VFD) input stages, DC bus power supplies, UPS front-end rectification, welding equipment, and regenerative braking systems. Its rugged construction handles the high surge currents and thermal stresses common in heavy industrial environments including crane drives, compressor controls, pump systems, and process machinery. Engineers specifying rectifier modules for 400–690VAC three-phase inputs will find this part's 800V rating provides the necessary margin for transient overvoltage protection.

Quick Reference: VSKN91/08

Key Features of the VSKN91/08:

• 800V repetitive peak reverse voltage (VRRM) providing adequate margin for 480VAC and 690VAC three-phase systems
• 91A average rectified output current rating for medium-to-high power industrial converter stages
• Isolated copper base plate for direct heatsink mounting, minimizing thermal resistance in high-dissipation designs
• Integrated multi-diode configuration reduces external component count and simplifies PCB or busbar assembly
• High surge current (IFSM) capability to withstand startup inrush and fault transients without junction damage
• Compliant with industry standard footprint dimensions for straightforward form-fit-function replacement in existing designs

With a current factory lead time of 99 weeks, new production orders for the VSKN91/08 are not a practical option for most maintenance or production schedules. Obsolescence risk and extended procurement timelines make distributor stock the only reliable path for emergency replacements, MRO inventory replenishment, or end-of-life design builds. ATI specializes in exactly this scenario — sourcing hard-to-find, long-lead-time, and discontinued Vishay power modules that OEM and industrial channels simply cannot deliver in time. All units are new OEM condition, fully traceable.

ATI Accurate Technology is a power semiconductor specialist located in Palmetto, Florida, stocking IGBTs, rectifier modules, thyristors, and diodes from leading manufacturers including Vishay. 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.