Tiny Trimmers Reach To 10 GHz

May 22, 2014

This line of nonmagnetic trimmer capacitors is ideal for application through 10 GHz in MRI circuits and systems.

Related To: Knowles Precision Devices

Sapphire trimmer capacitors in the V9000 series are miniature components offering tunable capacitances from 1 to 12 pF in compact housings. In spite of being only 0.64 in. across at the minimum capacitance value, these components are rated for working voltages to 2 kV and can handle voltages as high as 3 kV at frequencies as high as 10 GHz.

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The sapphire trimmers maintain stable performance with time and temperature and are mechanically strong and moisture resistant. They feature high quality factor (Q) of 3000 minimum at 100 MHz and they are compatible with SAC 305 reflow solder processing. These nonmagnetic trimmers are well suited for applications in magnetic-resonance-imaging (MRI) circuits and systems according to the firm’s strict traceability and testing regimes.

Knowles Capacitors, Old Stoke Rd., Arminghall, Norwich, Norwalk NR14 8SQ, United Kingdom; +44 (0) 1603 723310, FA: +44 (0) 1603 723301

About the Author

Jack Browne | Technical Contributor

Jack Browne, Technical Contributor, has worked in technical publishing for over 30 years. He managed the content and production of three technical journals while at the American Institute of Physics, including Medical Physics and the Journal of Vacuum Science & Technology. He has been a Publisher and Editor for Penton Media, started the firm’s Wireless Symposium & Exhibition trade show in 1993, and currently serves as Technical Contributor for that company's Microwaves & RF magazine. Browne, who holds a BS in Mathematics from City College of New York and BA degrees in English and Philosophy from Fordham University, is a member of the IEEE.