Features:1) Part no.: LTM455E2) Center frequency: fo 450?.5kHz3) Band width: at 6dB?.5kHz4) Mini band width: at 50dB?5kHz5) Max. insertion loss: 6dB max. (fo?.5kHz)6) Ripple in band width: 2.0dB max. (fo?00kHz)7) Stop band attenuation: (at fo?00kHz), 40dB min (-25 - +80) temperature8) Coefficient of center frequency (-50 - +80): 50ppm/ (max.)9) Group delay time deviation: 30約ec max. (450?kHz)10) Dielectric with standing voltage: 100V.DC (1min)11) Input / output impedance: 1.5k┍10% (DV 10V)12) Insulation resistance (DV 10V): 100M?(min.) producing area:China