Ohtama are professionals in the area of magnetic shielding and magnetic collection components and manufacture a range of products using a variety of materials with a strong focus on iron-nickel alloys (Permalloy).
Shielding components for telecommunications equipment, broadcasting equipment, electron beams and electron microscopes used in semiconductor applications and medical equipment etc.
Ohtama offers a range of solutions to shield against external magnetic fields and to prevent the leakage of generated magnetic fields.
Various permaloy cores for current sensors (clamp cores) and CT (current transformer) cores are available.
Ohtama offers a range of heat treatment services, including magnetic annealing of Permalloy and pure iron materials in a hydrogen atmosphere or in a vacuum.
We keep an extensive inventory of permalloy materials, PC or PB, according to the customer’s request.
Ohtama provides onsite measurements at facilities where electron beam applications are used and a range of other low-frequency magnetic field measurements.
Magnetic field analysis and a variety of design services are also pne of Ohtam's best solution at your service.
Ohtama offers active magnetic shield system using using high sensitive sensors and a Helmholtz coil
Watch this space! We are currently in the process of developing new, light-weight, ultra-high-performance magnetic shields under contract of the Ministry of Economy, Trade and Industry of Japan.