AudioSKU: B0401V10000298
Boardoza MT1240A03NP-02 Passive Magnetic Buzzer Breakout Board
The Boardoza Passive Buzzer Board is a compact sound output module based on the MT1240A03NP-02 magnetic transducer. It does not have an internal oscillator and requires an external PWM signal to generate sound. The buzzer has a resonance frequency of 2kHz and provides a minimum sound pressure level of 80dBA at 10cm under rated test conditions.
The board can be easily controlled from a microcontroller through the SIGNAL pin and supports both 3.3V and 5V logic levels. With its simple connections, it is suitable for alarms, warning signals, notifications, and other applications where different buzzer tones are required.
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Key Features
- PWM Controlled Passive Buzzer: The buzzer has no internal oscillator and requires an external PWM signal to generate sound.
- Minimum Sound Pressure Level: Provides a minimum sound pressure level of 80dBA at 10cm under rated test conditions.
- Freewheeling Diode: Helps protect the transistor from voltage spikes when the buzzer is switched off.
- 3.3V and 5V Logic Control: The SIGNAL pin can be driven by standard 3.3V or 5V microcontroller logic levels.
Technical Specifications
- Item
- Passive Buzzer
- Operating Voltage
- 2-5 V
- Minimum Sound Pressure Level
- 80dBA @ 10cm
- Max Operating Current
- 80 mA
- Resonance Frequency
- 2 kHz
- Operating Temperature
- -30°C to +85°C
- Board Dimensions
- 20mm x 20mm
Support
For technical questions, documentation and issue reports, use the GitHub repository or write to us directly.