page 1 ? 2009, kr electronics, inc. 2925+, rev 0, july 8, 2009 kr electronics kr electronics part number 2925+ is a 70 mhz elliptic type bandpass filter. the filter is group delay and amplitude equalized with a minimum 1 db bandwidth of 15 mhz. other center fre- quencies and bandwidths available. please consult the factory. general description kr electronics, inc. features ?? 70 mhz center frequency ?? 15 mhz min 1 db bandwidth ?? group delay equalized for linear phase ?? 50 ? source and load ?? surface mount ?? also available with sma connectors 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 (5 db/div)
page 2 ? 2009, kr electronics, inc. 2925+, rev 0, july 8, 2009 passband amplitude & group delay (1 db/div & 4 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. 2925+, rev 0, july 8, 2009 kr electronics 2925+ 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 2. dimensions in inches 3. max reflow temperature 230 c for 10 sec 4. if boards are cleaned after installation units must be completely dried 5. also available in metal case with sma connectors parameter specification filter type bandpass center frequency 70 mhz insertion loss < 5 db 1 db bandwidth 15 mhz min 20 db bandwidth 23 mhz max 35 db bandwidth 25 mhz max group delay variation (64 mhz to 76 mhz) 8 nsec max (<4 nsec typical) source and load 50 ?
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