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Media contact - Bob Decker, Red Pines Group
Vishay Intertechnology’s New Non-Magnetic Surface-Mount MLCCs Offer C0G and X7R/X5R Dielectrics, Voltage Ratings From 6.3 VDC to 3000 VDC, and Capacitance From 0.5 pF to 6.8 µF in 11 Case Sizes
MALVERN, Pa. — Aug. 11, 2011 — Vishay Intertechnology, Inc. (VSH: NYSE) today introduced a new series of non-magnetic surface-mount multilayer ceramic chip capacitors (MLCCs) for MRI diagnostic equipment. VJ series non-magnetic capacitors are available with both C0G (NPO) and X7R/X5R dielectrics, each with a wide range of case sizes, voltage ratings, and capacitance values.
Recent technology advances in the area of ultra-high-field MRI can now produce much higher imaging resolution. Electronic components used in the MRI or nearby require non-magnetic components that do not interfere with magnetic fields. To meet this need, Vishay’s VJ series MLCCs are manufactured with non-magnetic materials and are 100% safety screened for magnetic properties before final packaging.
Vishay’s VJ series devices feature a wet build process and a reliable Noble Metal Electrode (NME) system. Vishay’s new non-magnetic series of capacitors can be assembled in an SMT process using conductive epoxy bonding or IR reflow. The capacitors are proven to have less interference than standard capacitors, which contain magnetic materials. The devices will typically be used in filter circuits for MRI equipment, implantable medical devices, ferromagnetic-sensitive instrumentation, electronic test systems, and high-end audio amplifiers.
Offered in 11 case sizes from 0402 to 3640, the VJ series features high voltage ranges from 6.3 VDC to 3000 VDC. The devices offer a wide capacitance range of 0.5 pF to 56 nF (with C0G dielectric) and 100 pF to 6.8 µF (with X7R/X5R dielectric), and an operating temperature range of - 55 °C to + 125 °C. The capacitors provide a temperature coefficient of capacitance (TCC) of ± 30 ppm/°C from - 55 °C to + 125 °C (C0G), ± 15 % from - 55 °C to + 85 °C (X5R), and ± 15 % from - 55 °C to + 125 °C (X7R).
The devices are compliant to RoHS Directive 2002/95/EC and halogen-free according to the IEC 61249-2-21 definition.
Samples and production quantities of the VJ series of non-magnetic capacitors are available now, with lead times of nine to 14 weeks for standard orders.
Vishay Intertechnology, Inc., a Fortune 1000 Company listed on the NYSE (VSH), is one of the world's largest manufacturers
of discrete semiconductors (diodes, MOSFETs, and infrared optoelectronics) and passive electronic components (resistors, inductors,
and capacitors). These components are used in virtually all types of electronic devices and equipment, in the industrial,
computing, automotive, consumer, telecommunications, military, aerospace, power supplies, and medical markets. Vishay’s product
innovations, successful acquisition strategy, and "one-stop shop" service have made it a global industry leader. Vishay can
be found on the Internet at www.vishay.com.
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