The SKKH42/16E is a SEMIKRON thyristor/diode power module combining a single silicon-controlled rectifier (SCR) and a freewheeling diode within the compact SKKH platform. Rated at 42A average on-state current and a 1600V repetitive peak reverse voltage, this module is engineered for demanding half-wave or half-controlled bridge rectifier topologies. The integrated design reduces external component count, simplifies thermal management through a common baseplate, and ensures consistent switching behavior across the rated operating envelope—critical for systems where reliability and reproducibility are non-negotiable.

The SKKH42/16E is widely deployed in industrial AC motor drives, soft starters, DC bus power supplies, resistance welding controllers, and crane and hoist drive systems. Anywhere a half-controlled rectifier stage is used to convert single- or three-phase AC to a regulated DC bus, this module fits naturally. Its robust construction also makes it a trusted choice in UPS systems, battery chargers, electrochemical process equipment, and legacy drive retrofits where engineers need a drop-in thyristor/diode solution that meets original design specifications without board-level redesign.

Quick Reference: SKKH42/16E

Key Features of the SKKH42/16E:

• 42A average on-state current (Iᴀ) with 1600V repetitive peak reverse voltage (VRRM) for high-voltage industrial environments
• Integrated SCR and freewheeling diode in one SKKH package minimizes external wiring and reduces assembly complexity
• Common isolated copper baseplate enables straightforward heatsink mounting and efficient thermal dissipation across both devices
• Low thermal resistance junction-to-case supports continuous operation in high duty-cycle and high-ambient-temperature installations
• Gate trigger specifications optimized for standard drive circuits, ensuring compatibility with existing firing card architectures in legacy and modern drives
• SEMIKRON SKKH series dimensional footprint provides direct drop-in replacement capability for fielded equipment without mechanical modification

With a factory lead time of 27 weeks from SEMIKRON, the SKKH42/16E presents a genuine supply chain challenge for maintenance departments managing unplanned equipment failures or time-sensitive MRO procurement. ATI Accurate Technology actively sources long-lead-time and hard-to-find SEMIKRON thyristor/diode modules, including the SKKH42/16E, from authorized and vetted supply channels. Whether you need a single emergency replacement or are building buffer stock to protect critical production assets, contacting ATI early in your procurement cycle is the most effective way to avoid extended downtime driven by manufacturer lead times.

ATI Accurate Technology is headquartered in Palmetto, Florida and stocks a broad range of SEMIKRON and other manufacturer power semiconductor modules. Orders placed before 5PM EST ship same day. Call 239-734-7566 or email sales@igbts.us for real-time availability, lead time updates, and volume pricing on the SKKH42/16E and related thyristor/diode modules. ATI's team speaks power electronics—get the right part, fast.