Typical applications: Motherboard of computer,consumer electronics,CD-ROM VTR,Data communication,Automotive electronics, Modem , TV game Features: Low profile,bulk, offer fitted insulator, Large range of choice of frequency,Resistance weld Crystal Holder Prefix : 49US: 3.5 mm holder hight 49USS : 2.5 mm holder heihgt Frequency Range : Fundamental Mode 3.2 MHZ ~ 30MHZ 3rd overtone Mode: 27MHZ~ 70 MHZ Crystal Cut: AT –CUT or 3rd AT-CUT Load Capacitance: Series or 8 to 50 PF Calibration Tolerance (at 25℃ ): +/-10ppm ~ +/-50ppm Frequency Stability: +/-10ppm ~ +/-50ppm Operating temperature range: 0℃~50℃ , -10℃~60℃,-20℃~70℃,-30℃~80℃-40℃~85℃ Shunt Capacitance ( Co ): 7 pF maximum Equivalent series resistance ( E.S.R.): See table 1 Aging (per year at +25℃ ): +/-3 ppm Drive Level: 0,0.5,0.1,0.2,0.5,1.0mW (to be specified by customer) Insulation resistance: >500M ? min/DC100V