Resonators ZTB 456 / 500 / 503 / 912F Ceramic Resonator / ZTB 456 / 500 / 503 / 912F ( Murata CSB456/503/912F Compatible ) 456 / 500 / 503 / 912kHz Ceramic ZTB 456F Multiplexers Series is designed to provide frequency modulation for HI-FI stereo application. These units are offered in the frequency accuracy 19kHz ± 38Hz and 456kHz ± 2kHz with different applicable IC. ZTB912F Multiplexers Series is specially designed to provide frequency modulation for HI-FI automobile stereo application . ZTB 5.