... is professionally offering quartz crystals, filters, resonators, oscillators, TCXO, VCXO, SAW device, following is our product list: -HC49 series (HC49U/HC49S ... ,5*3.2mm,3.2*2.5mm)-Ceramic resonator & filter(ZTT,ZTA,ZTB,CRB)-SAW DEVICE(TO39,F11,QCC8C,SM2,5*3 ...