Kyosan Electric Manufacturing
A Yokohama-based electrical manufacturer known for railway signalling, whose power electronics business supplies power supplies for semiconductor and flat-panel display equipment, with a subsidiary in San Jose.
京三製作所・Equipment components・Last updated: October 27, 2026
Overview
Kyosan Electric Manufacturing is headquartered in Tsurumi, Yokohama. Its two pillars are railway signalling systems and power electronics.
The power electronics business makes power supplies for semiconductor and FPD manufacturing equipment and supports equipment makers in North America through a subsidiary in San Jose, California.
Business: Power supplies for semiconductor and FPD equipment
Why it matters
- Plasma processes need power supplies that respond quickly to changes in the plasma load without arcing.
- Reliability practices from railway signalling carry over to equipment that must run continuously in fabs.
Main products
- •Power supplies for semiconductor manufacturing equipment
- •Power supplies for industrial equipment
Sites in Japan
Head officeHeadquarters
Yokohama, Kanagawa