To help designers simulate circuit performance and reduce time to market, Vishay Intertechnology, Inc. (NYSE:VSH) today announced that Modelithics®, Inc. — the industry leader in providing simulation models for RF, microwave, and millimeter-wave devices — is now offering modeling for Vishay Vitramon VJ HIFREQ series high-frequency surface-mount multilayer ceramic chip capacitors (MLCCs) in the 0402 and 0603 case sizes.