Kepo piezo elements for audio transducers kepo ft 41g 10a1 479 the keno piezo element 1000 o 1 05khz is a 41mm diameter piezo element with a 75000nf30nf capacitance that can be used for a small audio transducer such as a buzzer kepo ft 41g 10a1 479 piezo element 1000 ohm 1 05 khz 41mm