PIEZO FILTERS CERAMIC FILTERS FOR AM APPLICATIONS SFU450/455kHz The following filters were designed to address the needs of standard AM filtering requirements. These filters are recommended for use in low cost products where economically, efficient designs are critical. SPECIFICATIONS Part Number SFU455A SFU455B (connected to an IFT) SFU450/455kHz Center Frequency (kHz) 3dB Bandwidth (kHz) Ripple (dB) max. 455 2 10 (3) 0 462 2 10 (3) -- Selectivity F0 9kHz Termination Impedance (Ohms) max. Spurious Response (dB) min. Insertion Loss (dB) max. 4@-10kHz 6@+10kHz 3k 10 (1~3MHz) 5 4@+10kHz 6@-10kHz 3k 10 (1~3MHz) 5 Operating Temperature Range -10C to +80C -10C to +80C Withstanding Voltage 50V DC 3.5 0.3 CIRCUIT 7.0 0.3 9.0 0.3 3.5 +1.0 -0.5 1.1 0.1 0.8 0.1 0.25 3k S.S.G. Rg=50 3k E2 RF Voltmeter 1.75 0.5 0.1 Sealing 3 -1.0 D. SFU455B is designed to be connected with an I.F.T. 2.5 0.2 Available as standard through authorized Murata Electronics Distributors. CG01-J 443 PIEZO FILTERS ( ) Typ. value DIMENSIONS: mm SFU455