Goedrum 35mm Piezo Discs/Elements

1. 5pcs 35mm wide brass piezoelectric discs. These are perfect for using as touch-sensors, electronic drum triggers, buzzers, or making your own contact mics. To use, simply solder positive to the center and ground to the brass disc. Center disc measures approx. 24.8mm wide. Profile is approx. 0.58mm thick.
2. Piezo-element Specification:
Type:External drive type element
Resonant Frequency:2.9 ± 0.5 KHz
Resonant Impedance:300Ω max
Capacitance:30000pF ± 30% at 100Hz
Input Voltage:30Vp-p max
Operating Temperature:-20 to +60°C
Storage Temperature:-20 to +70°C
Base Material:Brass