The SEMIKRON SKKT56/08D is a dual thyristor (SCR) module delivering 56A average on-state current and an 800V repetitive peak off-state voltage (VDRM/VRRM). Designed in SEMIKRON's industry-standard SKKT package, this module features an electrically isolated copper baseplate, enabling straightforward mounting to standard heatsinks without additional isolation hardware. Its robust construction and proven thyristor chip technology make it a reliable choice for demanding industrial power conversion topologies where controlled rectification or AC power switching is required.

The SKKT56/08D is widely deployed in three-phase fully controlled bridge rectifiers, soft starters, AC motor drives, DC motor field supply units, battery chargers, and UPS systems. Industries including steel and metals processing, mining, marine propulsion, oil and gas, and industrial automation rely on this series for its stable gate trigger characteristics and thermal robustness under continuous heavy-load cycles. It is also found in regenerative drive front ends and power supply systems requiring precise phase-angle control across wide operating temperature ranges.

Quick Reference: SKKT56/08D

Key Features of the SKKT56/08D:

• Dual SCR (thyristor) configuration in a single SKKT package, enabling compact fully controlled bridge designs with reduced component count
• 800V VDRM/VRRM blocking voltage with high dV/dt immunity for operation on stiff industrial bus systems
• 56A average on-state current (IT(AV)) with low on-state voltage drop (VT) for minimized conduction losses and reduced heatsink requirements
• Electrically isolated alumina (Al₂O₃) ceramic baseplate — rated isolation voltage typically 2500V RMS — eliminates the need for external mica or silpad insulators
• Standard SKKT footprint ensures form-fit-function interchangeability with other SEMIKRON and compatible third-party SKKT-series thyristor modules
• Gate trigger characteristics optimized for both resistive and inductive loads, supporting reliable firing from standard SCR gate driver circuits across the full operating temperature range

The SKKT56/08D carries a factory lead time of approximately 26 weeks for new production orders, making advance planning critical for MRO and OEM supply chains. SEMIKRON's SKKT thyristor family is also subject to periodic product lifecycle changes, placing older drive and rectifier platforms at sourcing risk. ATI Accurate Technology actively manages inventory pipelines and works with a global distributor network to locate new, surplus, and factory-fresh stock for customers who cannot wait for full production lead times. If you are managing a critical spares program or facing an unplanned equipment failure, contact ATI before your line goes down.

ATI Accurate Technology is headquartered in Palmetto, Florida, and specializes in power semiconductors including thyristors, IGBTs, diodes, and rectifier modules — with particular expertise in long-lead-time and hard-to-find components. Orders placed before 5PM EST ship same day when stock is available. Call us at 239-734-7566 or email sales@igbts.us for real-time availability, volume pricing, and expedite options on the SKKT56/08D and the full SEMIKRON SKKT product range.