The Mitsubishi TM20RA-20 is a thyristor (SCR) power module rated for 20A continuous current and 200V repetitive peak off-state voltage. Built in Mitsubishi's proven thyristor module platform, the TM20RA-20 integrates SCR die with an isolated baseplate construction for direct heatsink mounting, simplifying thermal management in space-constrained control cabinets. This module is engineered for phase-angle firing control, soft-start circuits, and AC power regulation where reliable, repeatable gate triggering and low on-state voltage drop are critical to system efficiency and longevity.

The TM20RA-20 sees broad deployment across industrial and commercial power electronics. Common applications include single-phase and three-phase AC motor soft starters, resistive and inductive heating control systems, DC motor armature drives, power factor correction equipment, and low-voltage DC power supplies. Its compact footprint and isolated baseplate make it a practical choice for OEM machine builders and panel integrators working in plastics processing, HVAC, printing machinery, material handling, and general factory automation where rugged thyristor switching is required at this current and voltage class.

Quick Reference: TM20RA-20

Key Features of the TM20RA-20:

• 20A RMS on-state current rating with low forward voltage drop for reduced conduction losses
• 200V repetitive peak off-state voltage (VDRM/VRRM) suitable for 120V and low-end 208V AC line applications
• Isolated copper baseplate construction for direct mounting to standard heatsinks without additional isolation hardware
• Gate-cathode characteristics optimized for reliable triggering with standard SCR gate drive circuits and firing cards
• Compact thyristor module package reduces board space and wiring complexity versus discrete SCR assemblies
• Manufactured to Mitsubishi's industrial-grade process controls ensuring consistent lot-to-lot parameter uniformity

With a factory lead time of 35 weeks on new production orders, the TM20RA-20 presents a sourcing challenge for maintenance teams facing unplanned downtime or procurement teams managing scheduled builds. Legacy industrial equipment and long-running OEM machine lines frequently depend on Mitsubishi thyristor modules that are no longer in active distribution channels. ATI Accurate Technology maintains inventory of hard-to-find and long-lead-time power semiconductors specifically to bridge this gap — providing new OEM stock when extended factory queues or obsolescence would otherwise stall a repair or production schedule.

ATI Accurate Technology is located in Palmetto, Florida and specializes in IGBTs, thyristors, diodes, and rectifier modules for industrial power electronics. Orders placed before 5PM EST ship same day. ATI serves maintenance engineers, equipment rebuilders, and procurement professionals needing reliable stock on hard-to-find parts. Contact us for volume pricing, cross-reference support, or application questions. Call 239-734-7566 or email sales@igbts.us — we're ready to help you source the TM20RA-20 today.