page 1 ? 2009, kr electronics, inc. 2839, rev 0, may 19, 2009 kr electronics kr 2839 is a 25 mhz elliptic bandpass filter. the 1 db band- width is 6 mhz minimum. the filter is group delay and ampli- tude equalized. other center fre quencies and bandwidths avail- able. please consult the factory. general description kr electronics, inc. features ?? 25 mhz center frequency ?? 6 mhz min 1 db bandwidth ?? group delay/phase equalized ?? elliptic response ?? surface mount ?? 50 ? source and load typical performance www.krfilters.com kr electronics, inc. 91 avenel street avenel, nj 07001 www.krfilters.com sales@krfilters.com (732) 636-1900 (732) 636-1982 web email phone fax overall response (10 db/div)
page 2 ? 2009, kr electronics, inc. 2839, rev 0, may 19, 2009 passband amplitude & group delay (0.5 db/div & 10 nsec/div) kr electronics typical performance kr electronics, inc. www.krfilters.com kr electronics, inc. 91 avenel street avenel, nj 07001 www.krfilters.com sales@krfilters.com (732) 636-1900 (732) 636-1982 web email phone fax overall stopband to 1 ghz (10 db/div)
page 3 ? 2009, kr electronics, inc. 2839, rev 0, may 19, 2009 parameter specification filter type bandpass center frequency 25 mhz insertion loss < 6 db (3.5 db typical) minimum 1 db bandwidth 6 mhz min attenuation 20 mhz 40 db min attenuation 30 mhz 40 db min passband ripple < 0.5 db source and load 50 ?? ultimate attenuation >50 db ultimate attenuation >50 db ? kr electronics 2839 kr electronics, inc. physical dimensions specifications www.krfilters.com kr electronics, inc. 91 avenel street avenel, nj 07001 www.krfilters.com sales@krfilters.com (732) 636-1900 (732) 636-1982 web email phone fax notes: 1. surface mount package ? metal cover open frame 2. dimensions in inches 3. maximum reflow temperature is 209 c for 10 sec maximum. 4. if boards are cleaned after installation, units must be completely dried.
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