1.Resistance Welded HC-49/U Package 2.Height 13.46mm 3.The tight frequency stability is good FEATURE n Height ... 2 pads ( 8*4.5mm, 7*5mm, 6*3.5mm, 5*3.2mm,3.2*2.5mm) -Watch crystal / cylinder crystal/ tuning ... 2.5*2.0mm)-TCXO,VCXO (7*5mm,5*3.2mm,3.2*2.5mm)-Ceramic resonator & filter(ZTT,ZTA, ... ZTB,CRB)-SAW DEVICE(TO39,F11,QCC8C,SM2,5*3.5mm3.8*3.8mm,3*3mm)Represents below brandEPSON, CITIZEN, SII ( SEIKO), ...