Non-Magnetic SMT MLCCs suit MRI diagnostic equipment.

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 µF.

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 µF 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 µF 1210 500 1.0 nF 1.0 µF X7R 1808 3000 220 pF 270 nF 1812 3000 270 pF 1.0 µF 1825 1000 10 nF 2.7 µF 2220 3000 1.0 nF 2.2 µF 2225 2000 5.6 nF 4.7 µF 3640 500 15 nF 6.8 µF

    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 µF. 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)

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