page 1 ? 2009, kr electronics, inc. 2977, 485 mhz bandpass, rev 0, march 20, 2010 kr electronics, inc. kr electronics part number 2977 is a 485 mhz bandpass filter. the filter has a 3 db bandwidth of 40 mhz. other center fre- quencies and bandwidths available. please consult the factory. general description kr electronics, inc. features ?? 485 mhz center frequency ?? 40 mhz, 3 db bandwidth ?? 50 ? source and load ?? surface mount 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. 2977, 485 mhz bandpass, rev 0, march 20, 2010 passband amplitude & group delay (1 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
page 3 ? 2009, kr electronics, inc. 2977, 485 mhz bandpass, rev 0, march 20, 2010 parameter specification filter type bandpass center frequency 485 mhz insertion loss 4.5 db max 3 db bandwidth 40 mhz 4 mhz 20 db bandwidth 69 mhz typical ? ? ? 2.3 db typical ? 40 db bandwidth 117 mhz typical source and load 50 ?? kr electronics 2977 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 2. dimensions in inches 3. max reflow temperature 209 c for 10 sec 4. if boards are cleaned after installation units must be completely dried
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