Semitech Electronic Semitech Electronics is a quality and service oriented manufacturer especially focusing on Surge Protection Devices. With 15 years of industrial experience, we have been a leading supplier in wide range of industries, including Automobile, Telecommunications, Industrial Equipments, Consumer Electronics and etc. Semitech Electronics commits in providing high quality products that meets or exceeds customers’ expectation. Our factory vertically integrated the full production process from wafer designing to packaging. Our trained sales managers ensure prompt service to all customers.