This is a pack of 1 piezoelectric elements, pre-wired with leads to save you having to solder the leads on yourself. 40mm is a perfect size for installing in cigar box guitars, foot stompers and other home-made instruments. They can also be used for custom pickup arrangements in more traditional stringed and percussion instruments.

A piezoelectric transducer converts mechanical force into electrical output. This is made up of Quartz crystal which contains SiO2. Piezoelectric crystals are electrically neutral. The atoms inside the crystals in an unsymmetrical manner but their electric charges balanced.

A piezoelectric transducer converts mechanical force into electrical output. This is made up of Quartz crystal which contains SiO2. Piezoelectric crystals are electrically neutral. The atoms inside the crystals in an unsymmetrical manner but their electric charges balanced

Uncased piezo elements Speech and music applications Wide tonal response 12mm with flying leads Specification: Resonant frequency(KHz) Fs=9.0±1.0 Resonant impedance(Ω) Rr≤500Ω Capacitance at 120Hz(NF) Co=11±30% Operating Temperature(°) -20∽+70 Storage Temperature(°) -30∽+80 Color: As the pictures shown Material: Copper,PVC Size: Metal Plate Diameter(mm) : 12 Cable Length: 7cm