Vishay VJ1111 Series Quad Hi Frequency Multilayer Ceramic. QUAD HIFREQ Series Surface Mount Multilayer Ceramic Capacitors for RF Power Applications; MRI coils and generators; RF instruments; Lasers, CATV, UHF / microwave RF power amplifiers; Filter networks, timing circuits; Mixers, oscillators impedance matching networks. Case sizes 0505, 1111, 2525, and 3838 Ultra-stable, high Q dielectric material Lead (Pb)-free terminations code "X" Tin/Lead termination code "L" Non-magnetic Copper termination code "C" Reliable Noble Metal Electrode (NME) system High frequency