The Semikron SKKT91/16D is a dual thyristor (SCR) module from the proven SEMIPACK family, rated for 91A average on-state current (IT(AV)) and a 1600V repetitive peak reverse voltage (VRRM). Configured as two thyristors in a common-cathode or common-anode arrangement depending on circuit topology, this module delivers robust phase-control performance with high blocking voltage capability and low thermal resistance. Its industry-standard SEMIPACK footprint ensures straightforward integration into existing drive and rectifier designs, making it a reliable choice for OEM replacements and new system builds alike.

The SKKT91/16D is a core component in demanding industrial power electronics applications. Engineers specify this module in three-phase AC-to-DC converter bridges, DC motor field and armature controllers, soft starters, crane and hoist drives, industrial heating regulators, and regenerative drive systems. Its 1600V voltage class provides adequate voltage margin in 690V AC line environments with real-world transient headroom. The module's established thermal interface geometry fits standard heatsink assemblies used throughout the industrial automation, metals processing, marine propulsion, and oil and gas sectors.

Quick Reference: SKKT91/16D

Key Features of the SKKT91/16D:

• 91A average on-state current rating suitable for medium-power phase-control and rectifier bridge configurations
• 1600V VRRM blocking voltage providing robust margin in 690V three-phase AC systems subject to line transients
• Industry-standard SEMIPACK package with isolated copper baseplate for direct heatsink mounting and reduced system assembly complexity
• Low thermal resistance junction-to-case (RthJC) enabling high continuous current density in properly heatsinked installations
• High surge current (ITSM) and di/dt ratings suited to resistive and mildly inductive load environments typical of industrial drives
• Compatible with standard SKKT-series gate drive circuits, simplifying drop-in replacement in legacy Semikron-based system platforms

With a factory lead time of approximately 37 weeks for new production, the SKKT91/16D presents a real sourcing challenge for maintenance teams managing unplanned equipment failures or procurement professionals scheduling build slots. ATI Accurate Technology maintains active sourcing channels for long-lead-time and allocated Semikron devices, including the SKKT series. Whether you need a single module for emergency repair or a scheduled blanket quantity, ATI works to locate genuine new OEM stock and provide accurate lead time intelligence—so your project timeline isn't held hostage to factory queues.

ATI Accurate Technology is a power semiconductor distributor based in Palmetto, Florida, stocking IGBTs, thyristors, diodes, and rectifier modules including obsolete and hard-to-find parts. Orders placed before 5PM EST ship same day when stock is on hand. For volume pricing, lead time confirmation, or cross-reference assistance on the SKKT91/16D, contact our team directly at 239-734-7566 or sales@igbts.us.