35mm piezoelectric ceramic buzzer is a compact, 35mm diameter acoustic component that uses the piezoelectric effect to convert electrical energy into sound, or physical vibration/pressure into electrical signals. It consists of a thin ceramic disc bonded to a brass or copper plate, offering a loud, clear sound (typically 2–5 kHz) for alarms, indicators, and DIY projects.
Specifications
Diameter: 35mm (approx. 1.38 inches)
Total Thickness: 0.38mm to 0.5mm
Plate Material: Brass (Copper)
Resonant Frequency: 1.8 kHz to 4.6 kHz ±0.5 kHz
Resonant Impedance: $\le$250Ωto 300 Ω
Static Capacitance: 38,000 pF to 50,000 pF (±30%)
Maximum Input Voltage: Up to 30Vp-p (typically 1.5–30V)
Operating Temperature: -20°C to +70°C or -40°C to +85°C