Non-Magnetic SMT MLCCs suit MRI diagnostic equipment.

Vishay Aug 29, 2011

Press Release Summary:

Available in 11 case sizes, multilayer ceramic chip capacitors (MLCCs) of VJ series offer C0G (NPO) and X7R/X5R dielectrics and feature wet build process as well as Noble Metal Electrode (NME) system. Design minimizes interference and also complies with RoHS as well as IEC (61249-2-21) halogen-free standards. Safety screened for magnetic properties before final packaging, MLCCs offer voltage ratings from 6.3-3,000 Vdc and capacitance from 0.5 pF to 6.8 Ã‚ÂµF.

Original Press Release:

New VJ Series Non-Magnetic Surface-Mount MLCCs

Vishay Intertechnology's New Non-Magnetic Surface-Mount MLCCs Offer C0G and X7R/X5R Dielectrics, Voltage Ratings From 6.3 VDC to 3,000 VDC, and Capacitance From 0.5 pF to 6.8 ÂµF in 11 Case Sizes Vishay Intertechnology, Inc. (NYSE: VSH) announces 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.

Proven to have less interference than standard capacitors, which contain magnetic materials

Feature a wet build process and a reliable Noble Metal Electrode (NME) system

Compliant to RoHS Directive 2002/95/EC and halogen free according to the IEC 61249-2-21 Product Group: Vishay Vitramon, MLCCs / August 2011 definition

Key Device Specifications: Dielectric Case Max. voltage (V) Capacitance Minimum Maximum 0402 100 0.5 pF 180 pF 0603 200 0.5 pF 1.8 nF 0805 500 0.5 pF 3.3 nF 1206 600 0.5 pF 10 nF C0G (NPO) 1210 500 0.5 pF 12 nF 1808 3000 10 pF 10 nF 1812 3000 10 pF 22 nF 1825 1000 15 pF 39 nF 2220 1000 100 pF 47 nF 2225 1000 120 pF 56 nF

X5R 0402 16 27 nF 100 nF 0603 6.3 120 nF 150 nF

0402 100 100 pF 22 nF 0603 100 270 pF 100 nF 0805 200 390 pF 390 nF 1206 500 680 pF 1.0 ÂµF 1210 500 1.0 nF 1.0 ÂµF X7R 1808 3000 220 pF 270 nF 1812 3000 270 pF 1.0 ÂµF 1825 1000 10 nF 2.7 ÂµF 2220 3000 1.0 nF 2.2 ÂµF 2225 2000 5.6 nF 4.7 ÂµF 3640 500 15 nF 6.8 ÂµF

The Perspective: 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 equipment require non-magnetic components that do not interfere with magnetic fields. To meet this need, Vishay's new VJ series surface-mount MLCCs are manufactured with non-magnetic materials and are 100 % safety screened for magnetic properties before final packaging. The capacitors are available with both C0G (NPO) and X7R/X5R dielectrics, and offer 11 case sizes, high voltages from 6.3 V to 3,000 VDC, and capacitance values from 0.5 pF to 6.8 ÂµF. Availability: 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. To access the product datasheet on the Vishay Web site, go to: http://www.vishay.com/doc?45128 (VJ Non-Magnetic Series)