2 4 january 2008 specification for crystal filter: q f 6.990 .. ..7.010 - 0 280 / 06 1. general 1.1. package 1.2. type name: qf 6.990 .7.010 - 0 280/06 1.3. number of poles: 5 1. 4 . o perating temperature range: - 3 0c to + 85 c 1.5 . storage temperature range: - 4 5c to + 85c 2. electric values 2.1. n ominal centre frequency fo [ mhz ]: 6.990 , 6.992, 6.994, 6.996, 6.998, 7.000, 7.002 7.004, 7.006, 7.008, 7.0 10 2.2. pass band 2.2.1. centre frequency fc at 25c 3c: fo 180hz 2.2. 2 . bandwidth between 3 db - frequencies: > fc 1 . 4 khz 2.2.3 . ripple at fc 0.8 khz : < 1 .0 db ( < 0.5 db peak to peak ) 2.2.4 . insertion loss: < 3 .0 db ( measured on smallest attenuation in pass band ) 2.3. stop band 2.3.1. fc 5.5 khz > 6 0 db 2.3.2. alternate attenuation > 7 0 db ( except spurious ) 2.4. nomi n al input power level +10 dbm 2.4.1 . maximal input power level +2 5 dbm 2. 5 . terminating impedance r//c ( input and output ): 50 // 0 pf 3 . marking ( i. e. ) : manufacturer , date c ode qf 6.990 - 0280/06
4. environment conditions: vibration: 9.8 g, 20 - 2000 hz, duration 60 sec. each axis. s hock: 40g, 11 ms, ? sine; change of temperature: - 30..+70 deg. c with exposure time rate at 5 deg. c / min. 5. air reflow temperature conditions _____________________________________________________________________________________ edited by: date: __________ _____ ____________ name: ___________ __ ______ ________ temperature / c time / s m ax. 260 c 217c 10 ... 30 s 30 ... 150 s max. 300 s chip - mount air reflow profile conditions exposure a verage ramp - up rate ( 30c to 217c ) less than 3c/second > 100c between 300 and 600 seconds > 150c between 240 and 500 seconds > 217c between 30 and 150 seconds p eak temperature max. 260c t ime within 5c of peak temperature between 10 and 30 seconds c ool - down rate ( starting at peak temperature to 50c ) less than 6c / second t ime from 30c to peak temperature no more than 300 seconds
|
