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standard crystal filters 21.4 mhz ; monolithic crystal ?ters ; through hole 4-16 vol. 2 sales offices: visit our web site at http://www.temex.net 21.4 mhz monolithic crystal ?ters - standard - through hole notes: - parallel termination capacity is adjusted for optimum ?ter response. t ype n b .p assband s topband g uarant .r ipple i nsertion t ermination p ackage o ld t emex poles attenuation a ttenuat . max . loss max .i mpedance reference db khz db khz db khz db db db k ? //pf qef21m4a7.5 2 3 3.75 20 18 30 0.5 2 0.85//5 um1 te5180 m2 qef21m4b7.5 4 3 3.75 40 14 60 1 2.5 0.85//5 cc16pf um1 x2 te5190 2m2 qef21m4c7.5 6 3 3.75 60 12.5 65 2 3 0.85//5 sm2 - qef21m4d7.5 8 6 3.75 65 8.75 85 12.5 90 2 4 0.85//5 sm2 - QEF21M4A12 2 3 6 20 25 30 0.5 2 1.2//3 um1 - qef21m4b12 4 3 6 40 20 60 1 2.5 1.2//2.5 cc10pf um1 x2 - qef21m4c12 6 3 6 45 14 65 2 3 1.6//1 sm2 - qef21m4d12 8 3 6 65 14 85 20 90 2 3 1.2//2.5 sm2 - qef21m4a15 2 3 7.5 18 25 30 0.5 1.5 1.5//2 um1 te5260 m2 qef21m4b15 4 3 7.5 40 25 50 1 2 1.5//2 cc8pf um1 x2 te5270 2m2 qef21m4c15 6 3 7.5 60 25 65 2 2.5 1.5//2 sm2 - qef21m4d15 8 3 7.5 65 17.5 80 25 85 2 3 1.5//2 sm2 - qef21m4a20 2 3 10 18 34 30 0.5 2 1.8//1.5 um1 - qef21m4b20 4 3 10 40 34 50 1 2 1.8//1.5 cc7pf um1 x2 - qef21m4c20 6 3 10 60 33 65 2 3 1.6//2 sm2 - qef21m4d20 8 3 10 65 23 85 35 90 2 4 1.5//2 sm2 - qef21m4a30 2 3 15 15 50 30 1 1.5 3//0 um1 te5300 m2 qef21m4b30 4 3 15 30 45 60 1 2.5 3//0 um1 x2 te5310 2m2 qef21m4c30 6 3 15 65 55 70 2 3 3//0 sm2 - qef21m4d30 8 3 15 65 35 85 55 90 2 3.5 2.2//0.5 sm2 -

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