SAW Device WFC68D0315CH For Automotive ■ Features SAW Filter for Remote Keyless Entry System(315MHz). ●Compact and thin. ●Support a wide operating temperature range(-45°C to + 95 °C). ●Excellent shock resistance. ●A filter with low insertion loss. ●Meets the requirements for re-flow profiling using lead-free solder. ●Conforms to AEC-Q200. ■ Specifications Model WFC68D0315CH Item Min. Typ. Nominal Frequency (MHz) − 315 − Minimum Insertion Attenuation (dB) − 2.4 2.9 Pass Band (314.82 to 315.18MHz) (ns) Guaranteed Attenuation (dB) (Relative Minimum Insertion Loss) Max. − 0.8 3.0 10 to 280MHz 50 55 − 280 to 295MHz 45 50 − 295 to 308MHz 40 46 − 308 to 312.8MHz 25 34 − 312.8 to 313.2MHz 33 37 − 313.2 to 314.1MHz 16 20 − 315.9 to 316.5MHz 16 20 − 316.5 to 320MHz 20 25 − 320 to 325MHz 13 18 − 325 to 335MHz 36 44 − 335 to 380MHz 43 52 − 380 to 600MHz 50 60 − 600 to 1500MHz 60 65 − 1500 to 2500MHz 50 55 − Operating Temperature Range (°C) –45 to +95 IN : 690//2.5 OUT : 800//2.1 Terminating Impedance (Ω // pF) When ordering or inquiring for SAW devices, please let us know the model. Please contact NDK sales with your enquiries. Please feel free to contact us with questions about other specifications. - 76 - 1501A_WFD68C0315CH_e SAW Device WFC68D0315CH For Automotive ■ Characteristics ■ Dimensions mm CH1 A/R LOG MAG REF -2.400 dB Terminal land connections 3.0±0.1 5.000 dB/ INPUT OUTPUT GND 1.05±0.2 3.0±0.1 #1 #4 Others [In-band characteristics] <S21> Center=315MHz, Span=5MHz, 5dB/div CH1 A/R LOG MAG REF 0.000 dB Land pattern (Typical) 2–1.6±0.15 6–0.6±0.15 #6 #5 #4 10.000 dB/ 1.15 12–(0.10) 2.0 4.0 1.5 #3 5–0.85±0.15 #2 1.5±0.15 #1 1.15 [Out-of-band characteristics] 0.8 0.7 0.8 <S21> Center=315MHz, Span=100MHz,10dB/div ■ Matching Circuit Input 82nH 1 4 91nH Output SAW 50Ω 9pF 8pF 50Ω Others - 77 - 1501A_WFD68C0315CH_e