SAW Device WF872G0140CB For Fixed Communication ■ Features ● IF SAW filter for base station. ● A low-loss filter. ● Excellent guaranteed attenuation. ● Surface-mount type. ■ Specifications Model WF872G0140CB Item min. typ. Nominal frequency : f0 (MHz) − 140 − Insertion loss at f0 − 10.4 13 1-dB passband width (MHz) 15 16.7 − 3-dB passband width (MHz) 16 17.6 − 40-dB passband width (In Band)(MHz) − 21.4 22.0 Pass-band ripple (f0±6.4 MHz)(dB) − 0.6 0.9 Group delay distortion (f0±6.4 MHz)(ns) − 78 140 Passband width (rel to f0) Operating temperature range (°C) −40 to +85 Terminating impedance (Ω) 50 (with matching) ■ Dimensions ■ Characteristics mm 13.3±0.2 8 11 6 12 5 3 4 12 5 11 6 10 9 8 7 12−0.8±0.2 12.4 CH1 CENTER(MHz) 140.0000 SPAN(MHz) 50.000 12-1.0 (2.44) 3 4 2 5.4 1 Land pattern (Typical) 12−(1.4) 7.62 (4.11) GND INPUT OUTPUT 2.0 max 2 Others 12 6 [Out-of-band characteristics] 2.54±0.2 (1.37) ( 0.6) Index Mark (0.1) 1 [In-band characteristics] CH1 A/R LOG MAG REF –10.440 dB 1.000 dB/ Terminal land connections 7 2.54 9 6.5±0.2 10 max. CH1 A/R LOG MAG REF –10.440dB 10.000 dB/ 7.62 12-2.1 ■ Matching Circuit L1 IN 12 6 L2 OUT SAW 50Ω C1 C2 CH1 50Ω - 58 - CENTER(MHz) 140.0000 SPAN(MHz) 100.000 12A_0903_WF872G0140CB_e