Napson
A Japanese maker of resistivity and sheet resistance instruments, using both four-point probe and non-contact eddy current methods.
ナプソン・Equipment・Last updated: October 23, 2026
Overview
Napson makes instruments that measure resistivity and sheet resistance. The RT-3000/RG-2000 use the four-point probe method, which Napson says gives the widest measurement range in the world for such instruments, and the NC-80MAP measures without contact by the eddy current method, mapping up to 217 points.
Business: Resistivity and sheet resistance measurement
Why it matters
Resistivity maps check wafers, epitaxial layers, implants and conductive films.
Main products
- •Four-point probe instruments (RT-3000, RG-2000)
- •Non-contact resistivity mapping (NC-80MAP)
Products (2)
- NC-80MAP · Wafer substrate inspection equipment
- RT-3000 / RG-2000 · Sheet resistance measurement