1.Resistance Welded HC-49/U Package 2.Height 13.46mm 3.The tight frequency ... 5*3.2mm, 4*2.5mm, 3.2*2.5mm, 2.5*2.0mm,2.0*1.6mm)- SMD crystal 2 pads ( 8*4.5mm ... 5*3.2mm,3.2*2.5mm) -Watch crystal / cylinder crystal/ tuning fork(2*6mm,3*8mm,2*6mm frog type. SMD3 ... half size,7*5mm,5*3.2mm,3.2*2.5mm,2.5*2.0mm)-TCXO,VCXO (7*5mm,5*3. ... 2mm,3.2*2.5mm)-Ceramic resonator & filter(ZTT,ZTA,ZTB,CRB ...