Eclipse MDI, has been headquartered in San Jose, CA since 2001. Eclipse MDI provides leading high performance coaxial, drop-in, plastic and ceramic packaged RF and Microwave components. Our product offering includes innovative and industry-leading broadband MMIC amplifiers, detectors, tunnel diodes and coaxial RF mixers, combiners, detectors, equalizers, limiters, power dividers, directional couplers, power modules and frequency multipliers. We offer over 300 product variations that enable customers a wide breadth of technology for which to design their products.

Eclipse partners with the world’s best semiconductor foundries and assembly houses, we have the supply chain capacity to meet nearly all customer requirements. Our easy-to-use products are ready to drop in your application and take it to the next level. Partner with one of the most reliable companies in the RF industry.

Eclipse MDI Executive Team


Jeff Rapadas, Founder/CEO

Mr Rapadas is our Founder & CEO and has held several design engineering and management positions in his career. From 1982-1987, Mr. Rapadas was a Components Design Engineer for Virtech Microwave, Eaton/Addington, AKON and ST Microwave. In 1987 - 1995, Mr Rapadas held a position as a Product Manager at Innowave and later at ST Microwave.

john choe eclipse mdi

John Choe, CFO

Mr. Choe is a Certified Public Accountant and has served Eclipse as our CFO since 2010.


Yeong-Sae Kim, Legal Council

Mr. Kim currently serves as legal council to Eclipse MDI.