CFR455D

FILTERS FOR COMMUNICATIONS EQUIPMENT RESIN MOLDED, MULTI-ELEMENT CFM/CFR455 SERIES The following lines of filters are high performance devices that achieve ultimate stopband attenuation through the use of multiple piezoelectric elements connected in ladder form. A few of the recommended applications for these filters include high class receivers, SSB communications equipment, pocket pagers and mobile radios. CFM455 9 Ceramic Elements CFR455 11 Elements Filters DIMENSIONS: mm CFM455 20.0 1.2 4 – .8 Dia. 10.5 4.0 CFR455 23.5 1.2 4 – .8 Dia. 10.5 4.0 ቢቤ ባብ 16.8 4.0 7.5 ቢቤ ባብ 20.0 4.0 7.5 Note: For safety purposes, connect the output of filters to the IF amplifier through a DC blocking capacitor. Avoid applying a direct current to the output of ceramic filters. SPECIFICATIONS Part Number Nominal Center Frequency (kHz) CFM455A CFM455B CFM455C CFM455D CFM455E CFM455F CFM455G CFM455H CFM455I CFR455A CFR4558 CFR455C CFR455D CFR455E CFR455F CFR455G CFR455H CFR455I CFR455J 455 455 455 455 455 455 455 455 455 455 455 455 455 455 455 455 455 455 455 3dB Bandwidth (kHz) min. ±13 ±10 ±9 ±7 ±5.5 ±4.2 — — — ±13 ±10 ±9 ±7 ±5.5 ±4.2 — — — — 6dB Bandwidth (kHz) min. ±17.5 ±15 ±13 ±10 ±8 ±6 ±4 ±3 ±2 ±17.5 ±15 ±13 ±10 ±8 ±6 ±4 ±3 ±2 ±1.5 Ripple (dB) max. 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 Bandwidth (kHz) At max. (dB) ±30 ±25 ±23 ±20 ±16 60 ±12 ±10 ±7.5 ±5 ±30 ±25 ±23 ±20 ±16 ±12 70 ±10 ±7.5 ±5 ±4.5 Attenuation 455±100kHz (dB) min. 50 50 50 50 45 45 45 4...