LFXTAL003071 4MHz Crystal by IQD. Overtone order : Fundamantal Package: Surface mopunt HC49/4HSMX Tolerance: ±30.00ppm @ 25°C ±2°C Load Capacitance (CL) 16.00pF Download IQD LFXTAL003071 crystal .pdf datasheet: Status: New Old Stock) ex farnell 971-3786 RoHS compliant: YES