The Nihon PT200S16A is a thyristor (SCR) module rated at 16A, engineered for reliable phase-controlled power switching in demanding industrial environments. Built to the compact, industry-standard module footprint, it delivers repeatable gate-trigger response and robust on-state current handling suited for both single-phase and three-phase converter topologies. The PT200S16A integrates internally isolated baseplate construction, simplifying thermal management and heatsink mounting in high-density power assemblies. Engineers specifying this device can expect consistent forward voltage characteristics and well-defined di/dt and dv/dt ratings that support stable operation across the full current range.

The PT200S16A sees wide deployment in AC motor soft starters, DC motor drives, industrial heating controllers, uninterruptible power supplies, and battery charging systems where precise phase-angle control is required. It is equally at home in welding equipment, crane and hoist drives, and process line power regulators where rugged thyristor switching must tolerate repetitive surge currents and inductive load transients. OEM equipment manufacturers and MRO procurement teams sourcing replacement modules for legacy drive platforms will find the PT200S16A a direct fit for many Nihon-based converter boards still running in the field.

Quick Reference: PT200S16A

Key Features of the PT200S16A:

• 16A average on-state current rating suitable for low-to-mid power phase-controlled converter stages
• Industry-standard isolated baseplate module package for simplified heatsink integration and electrical isolation from chassis ground
• Defined dv/dt and di/dt ratings supporting stable triggering under inductive and reactive load conditions
• Gate-cathode characteristics optimized for conventional SCR trigger circuits and standard gate drive ICs
• Repetitive peak off-state voltage rating engineered for margin in line-voltage-variable industrial grid environments
• Compact module footprint enabling drop-in replacement on existing PCB and busbar layouts in legacy drive equipment

With a factory lead time of 99 weeks, ordering the PT200S16A new from the manufacturer is not a viable option for most maintenance or production schedules. Equipment downtime waiting nearly two years for a single module is commercially unacceptable. Obsolescence risk is real for Nihon thyristor modules, and distributor stock levels are typically thin. Procurement professionals managing critical spare parts inventories for drives, soft starters, or power converters using this device should secure stock now rather than wait for a failure event. ATI Accurate Technology maintains inventory of hard-to-find Nihon modules specifically to bridge these gaps.

ATI Accurate Technology is a power semiconductor specialist located in Palmetto, Florida, stocking IGBTs, thyristors, diodes, and rectifier modules including obsolete and long-lead-time devices like the PT200S16A. Orders placed before 5PM EST ship same day. Contact our team for volume pricing, cross-reference assistance, or application questions. Call 239-734-7566 or email sales@igbts.us — we're ready to support your sourcing needs immediately.