L108K

HC49/4H & HC49/3H CRYSTALS ISSUE 9; 18 OCTOBER 1999 Delivery Options n Outline in mm (inches) - HC49/4H & HC49/4H-3L 4 .0 m a x (0 .1 5 7 m a x ) Æ 0 .4 5 (Æ 0 .0 1 2 ) = = 4 .8 8 (0 .1 9 2 ) 1 4 .6 5 (0 .1 8 3 ) 1 1 .0 5 (0 .4 3 5 ) 1 1 .0 5 (0 .4 3 5 ) P in 1 . C 2 . C 3 . C c o n n e c ito n s ry s ta l a s e & g ro u n d ry s ta l 2 3 4 .6 5 (0 .1 8 3 ) 1 2 .7 m in (0 .5 m in ) Common frequencies are available from stock. Please see p4 for details Æ 0 .4 5 (Æ 0 .0 1 2 ) 4 .8 8 (0 .1 9 2 ) 4 .0 m a x (0 .1 5 7 m a x ) 1 2 .7 m in (0 .5 m in ) Holder Style n HC49/4H & HC49/3H crystals are resistance welded, hermetically sealed in an inert atmosphere with glass to metal seals securing the lead wires. Holders suffixed ‘–3L have a centre third wire which grounds the case n QUARTZ CRYSTALS General Specifications n Load Capacitance (CL): 10pF to 75pF or Series n Drive Level: 500mW max. www.DataSheet4U.com n Static Capacitance (C0): 7pF max. n Ageing: ±3ppm typical per year Typical Frequency vs Temperature Curves for various angles of AT-cut crystals + 2 5 Standard Frequency Tolerances and Stabilities n ±10ppm, ±20ppm, ±30ppm, ±50ppm, ±100ppm Operating Temperature Ranges n D f/f0 (p p m ) 0 to 50°C –10 to 60°C –20 to 70°C –30 to 80°C –40 to 90°C –55 to 105°C Storage Temperature Range n 0 –55 to 125°C Shock: 981m/s2 for 6ms, three shocks in each direction along three mutually perpendicular planes Vibration: 10 to 60Hz 0.75mm displacement, 60 to 500Hz 98.1m/s2 ...