SAW Device WFB40C1747CD For Fixed Communication ■ Features ● RF SAW Filter for WCDMA Base Station (Band 3). ● Flat pass-band characteristics. ● Compact and light. ■ Specifications Model WFB40C1747CD Item Nominal frequency : fn (MHz) Passband width min. typ. − 1747.5 max. − 1710 − 1785 Maximum insertion loss (dB) 1710 to 1785 MHz − 1.7 2.8 In-band ripple (dB) 1710 to 1785 MHz − 0.6 1.6 1710 to 1785 MHz 1603 to 1681 MHz Guaranteed attenuation (dB) 1842 to 1883 MHz (from the throughlevel) 2107 to 2158 MHz Operating temperature range (°C) − 10 14 20 1.6 19 10 29 −30 to +85 2.1 − − − VSWR Terminating impedance (Ω) 50 ■ Dimensions ■ Characteristics CH1 A/R LOG MAG REF 0.000 dB mm Terminal land connections 3.0±0.2 GND INPUT OUTPUT 1.45 max 3.0±0.2 Others 2 5 5.000 dB/ CH1 1.15 ■ Matching Circuit 1.15 1.5 2 6 5 4 50Ω 0.8 0.7 5 SAW 2.0 12–(0.10) 4.0 1.5±0.15 3 5–0.85±0.15 6–0.6±0.15 2 SPAN(MHz) 1000 Land pattern (Typical) 2–1.6±0.15 1 CENTER(MHz) 1747.5 7.5nH 7.5nH 50Ω 0.8 - 42 - 12A_0903_WFB40C1747CD_e