SP446 Overview
Sichuan Institute of Piezoelectric and Acoustooptic Technology For BB Filters (F-11 Package) SP446 Electrical Characteristic: Sym F0 Unit MHz dB Spec 446 50min 50min 4.5max 2max 50Ω IL dB dB F-11 Package(fig2): L1 L2=18nH;C1 C2=1pF This may be changed according to PCB Frequency Characteristic(fig3):.