top of page

About Us


OnFILTER designs and manufactures special-purpose EMI filters and related instrumentation. We design our own products and manufacture them in California, USA and ship them around the world.  We manufacture both standard and custom products - if you don't see what you are looking for among our standard products, there is a good chance we can make it for you.

OnFILTER was started by Vladimir Kraz who was Director of Instrumentation at 3M, and previously started and ran Credence Technologies, a leading manufacturer of ESD and EMI instrumentation. Vladimir is a member of ESD Association Standards and he is a leader of SEMI Standards' EMC Task Force.

OnFILTER is based in Santa Cruz, California, a wonderful place to live and to raise a family.  We work with the customers around the globe and around the clock.  Contact us for any questions regarding your EMI problems. 

OnFILTER products are manufactured in USA at ISO 9000 factory

bottom of page