The SEMIKRON SKD31/16 is a three-phase diode bridge rectifier module rated for 35A average output current and a 1600V repetitive peak reverse voltage (VRRM). Housed in SEMIKRON's well-established SKD package, this module integrates six diodes in a standard B6 bridge configuration, enabling direct three-phase AC rectification to a smooth DC bus. The high voltage rating makes it particularly suited for 690V AC line inputs and demanding industrial environments where transient overvoltages require substantial voltage margin. Its isolated baseplate supports direct mounting to a heatsink for efficient thermal management.

The SKD31/16 sees broad deployment across industrial variable-speed drives, servo amplifiers, UPS systems, welding equipment, and DC power supply front ends operating from three-phase 400V to 690V mains. Its rugged construction and SEMIKRON's proven chip technology make it a preferred choice for OEM machine builders and field service engineers replacing failed bridge stages in legacy equipment. The module is also found in crane and hoist controls, elevator drives, and industrial battery chargers where continuous rectified current draw and occasional overload capability are both critical design requirements.

Quick Reference: SKD31/16

Key Features of the SKD31/16:

• B6 three-phase bridge topology with six integrated diodes in a single isolated-baseplate module
• 1600V VRRM rating provides substantial voltage margin on 480V and 690V three-phase systems
• 35A average forward current (IFAV) with surge current capability for demanding load profiles
• Isolated copper baseplate allows direct heatsink mounting without additional isolation pads, simplifying thermal stack design
• Industry-standard SKD footprint ensures dimensional and pin-out compatibility with other SEMIKRON SKD-series modules for straightforward field replacement
• Low forward voltage drop across diodes minimizes conduction losses and reduces thermal stress at rated current

The SKD31/16 carries a factory lead time of approximately 37 weeks for new production, a reality that routinely forces unplanned downtime when a bridge module fails and no spare is on hand. Procurement teams supporting long-running machinery or legacy drive platforms should treat this as a strategic stocking item. ATI Accurate Technology specializes in locating exactly these kinds of long-lead and hard-to-find SEMIKRON components through authorized and vetted distribution channels, helping customers bridge the gap between factory schedules and production demands without compromising on part authenticity or quality.

ATI Accurate Technology is based in Palmetto, Florida and ships same-day on orders placed before 5PM EST. Whether you need a single replacement module or a quantity buy to protect your spare parts inventory, our team is ready to help. Contact us at 239-734-7566 or sales@igbts.us for current availability, lead time updates, and volume pricing on the SKD31/16 and the full SEMIKRON SKD product family.