Product description
Active piezo buzzer with PCB pins. The buzzer features a built-in oscillator and produces sound as soon as a DC voltage is applied. It therefore requires no external signal generator or PWM drive, making it suitable for audible indication in alarms, instruments, and other electronic applications.
At a supply voltage of 3.3 V, the buzzer produces a sound output of at least 85 dB measured at a distance of 10 cm. The nominal frequency is 2.7 kHz.
Specifications:
- Model: HMB1275-03B
- Rated supply voltage: 3.3 V DC
- Supply voltage: 2–5 V DC
- Current consumption: ≤30 mA
- Sound output: ≥85 dB (10 cm)
- Frequency: 2700 ±300 Hz
- Operating temperature: -20 to +70 °C
- Dimensions: Ø12 × 7.5 mm
- Pin spacing: 7.6 mm (2.54 mm pitch)