c r y s t a l un i t 1. scope this specification shall cover the characteristics of crystal unit with SMD0705-10.00?27.00mhz 2. electrical specification item specification holder type SMD0705 nominal frequency 10.00?27.00mhz load capacitance 10pf to series oscillation mode fundamental frequency tolerance at 25 2 30ppm equivalent series resistance 40 max. drive level 0.5mw operating temperature range -10 ~+60 frequency stability 30ppm shunt capacitance <7pf aging 5ppm/year insulation resistance >500m at dc 100v 3 . dimension (mm) wing shing computer components co., (h.k.)ltd. tel:(852)2341 9276 fax:(852)2797 8153 homepage: http://www.wingshing.com e-mail: wsccltd@hkstar.com
4. mechani cal specification 1) terminal strength * lead pulling test conditions: load 907.2 gram direction to the downward duration of applied force 5 seconds results: there should be no distortion in appearance. * lead bending test conditions: load 453.6 gram bending angle 90 to normal position rate of bending 3 seconds in each cycle number of bending 3 results: there should be no distortion in appearance. 2) lead solderability test conditions: dipping in solder(+230 5 )for 5 seconds results: more than 95% of surface being tested should be coated uniformly with solder. 3) vibration test conditions: frequency 10 ? 55hz amplitude 0.762mm sweep 1.0 minute duration 2 hours results: frequency and wave form of tested products must remain within specifications. 4) drop test conditions: method of drop natural drop dropping floor hard wood board height 30cm number of drops 3 times results: frequency and wave form of tested products must remain within specifications.
5. environmental specification 1) temperature test * temperature cycling test conditions: steps of cycle 1) at -55 ,30 minutes 2) at +25 ,10 - 15 minutes 3) at +85 ,30 minutes 4) at +25 ,10 - 15 minutes number of cycles 3 times results: frequency and wave form of tested products must remain within specifications. * low temperature test conditions: temperature -20 2 length of test 96 hours results: there should be no stain on surface of products. frequency and wave form of tested products must remain within specifications. 2) aging test conditions: temperature +85 20 length of test 96 hours results: deviation of frequency must be less than 3ppm 3) salt spray test conditions: temperature +35 2 length of test 48 hours naci % 5% results: there should be no stain on surface of products. 4) humidity test conditions: temperature +40 2 relative humidity 90 - 95% length of test 96 hours results: a. insulation resistance must be 500 m /100 vac. minimum b. resistance and wave form must remain within specifications.
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