The IXYS MCC44-08IO1B is a thyristor (SCR) power module rated at 44A average on-state current (IT(AV)) and an 800V repetitive peak off-state voltage (VDRM/VRRM). Built to IXYS's established MCC-series platform, this module integrates a single SCR element in an industry-standard isolated base package, enabling straightforward mounting to heatsinks without additional isolation hardware. The device is optimized for phase-angle control, soft-start circuits, and AC power regulation in high-reliability industrial equipment where consistent gate sensitivity and low on-state voltage drop are critical design parameters.

The MCC44-08IO1B is well suited for AC motor drives, industrial heating and temperature control systems, power regulators, and resistance welding controllers. Its robust thermal design and isolated copper base make it a practical choice for retrofit and OEM designs in steel processing equipment, plastic extrusion machinery, crane and hoist drives, and UPS systems. Wherever a reliable, mid-range SCR module is needed for phase control of three-phase or single-phase AC loads, this IXYS module delivers consistent performance across wide operating temperature ranges.

Quick Reference: MCC44-08IO1B

Key Features of the MCC44-08IO1B:

• 44A average on-state current (IT(AV)) with low on-state voltage drop (VT), minimizing conduction losses in continuous duty applications
• 800V VDRM/VRRM repetitive peak voltage rating, providing adequate margin for 480VAC three-phase line environments
• Isolated metal base construction simplifies heatsink mounting and eliminates the need for separate mica or ceramic isolation pads
• Low gate trigger current (IGT) and gate trigger voltage (VGT) requirements support compatibility with standard gate drive and firing board circuits
• Compact MCC-series footprint enables direct form-fit-function replacement in existing PCB and busbar assemblies
• High surge current capability (ITSM) provides resilience against transient overload conditions common in motor starting and welding applications

With a factory lead time of 26 weeks for new production, the MCC44-08IO1B presents a significant procurement challenge for maintenance teams facing unplanned equipment downtime or production engineers managing build schedules. IXYS SCR modules of this series have also appeared on obsolescence watch lists as product lines consolidate following the Littelfuse acquisition. Relying on standard distribution channels for just-in-time availability is a risk that can translate directly into costly production stoppages. Sourcing from a specialist stocking distributor with verified OEM inventory is the most effective mitigation strategy for this part.

ATI Accurate Technology, based in Palmetto, FL, maintains ready stock of the MCC44-08IO1B and ships same-day on orders received before 5PM EST. We specialize in IGBTs, thyristors, diodes, and power modules — including hard-to-find and long-lead-time parts. Volume pricing is available for MRO and OEM purchase quantities. Contact our team directly at 239-734-7566 or sales@igbts.us to confirm availability and receive a quote.