Product description
Passive piezo buzzer with PCB pins. A passive piezo buzzer contains only a piezoelectric transducer and has no built-in oscillator. It must therefore be driven by an alternating signal to produce sound, for example a square wave (PWM) from a microcontroller or an external oscillator. Applying DC voltage normally produces only a short click when the voltage is connected or disconnected. A piezoelectric element converts mechanical energy into electrical energy and vice versa through the piezoelectric effect. It can therefore be used both as a sound transducer (buzzer) and as a sensor.
The buzzer has a resonant frequency of 4 kHz, where it produces its highest sound output. At a sypply voltage of 3.3 Vp-p and a 4 kHz square wave, it produces a sound level of at least 75 dB measured at a distance of 10 cm.
Specifications:
- Model: EST FUET-1230
- Resonant frequency: 4 kHz
- Sound output: ≥75 dB (10 cm, 5 Vp-p, 4 kHz square wave)
- Operating voltage (max): 25 Vp-p
- Supply voltage: 3.3 V p-p
- Current consumption: ≤5 mA
- Capacitance: 16 nF ±30% (at 1 kHz)
- Housing material: Black PBT
- Operating temperature: -20 °C to +70 °C
- Dimensions: 12 x 12 x 3 mm