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China High-Quality Piezoelectric Sounder Melody Buzzer - Low Frequency 2kHz - Trusted Suppliers & Factory
Electrical Characteristics
| 1 | Rated Voltage (VAC) | 16V |
| 2 | Operating Voltage (V) | 1～25 |
| 3 | Sound Output at 10cm (dB) | ≥75 |
| 4 | Current Consumption (mA) | ≤4 |
| 5 | Resonant Frequency (Hz) | 2000±500 |
| 6 | Operating Temperature (℃) | -20～＋80 |
| 7 | Housing Material | PPO |
| 8 | Weight (g) | 8.0 |
Dimensions and Material (unit: mm)
Tolerance: ±0.5mm Except Specified
Features
- Low frequency tone (2kHz).
- Piezo element is coated with water proof processing.
Notice (HANDLING)
- Do not apply DC bias to the piezoelectric buzzer; otherwise insulation resistance may become low and affect the performance.
- Do not supply any voltage higher than applicable to the piezoelectric buzzer.
- Do not use the piezoelectric buzzer outdoors. It is designed for indoor use. If the piezoelectric buzzer has to be used outdoors, provide it with waterproofing measures; it will not operate normally if subjected to moisture.
- Do not wash the piezoelectric buzzer with solvent or allow gas to enter it while washing; any solvent that enters it may stay inside a long time and damage it.
- A piezoelectric ceramic material of approximately 100µm thick is used in the sound generator of the buzzer. Do not press the sound generator through the sound release hole otherwise the ceramic material may break. Do not stack the piezoelectric buzzers without packing.
- Do not apply any mechanical force to the piezoelectric buzzer; otherwise the case may deform and result in improper operation.
- Do not place any shielding material or the like just in front of the sound release hole of the buzzer; otherwise the sound pressure may vary and result in unstable buzzer operation. Make sure that the buzzer is not affected by a standing wave or the like.
- Be sure to solder the buzzer terminal at 350°C max. (80W max.) (soldering iron trip) within 5 seconds using a solder containing silver.
- Avoid using the piezoelectric buzzer for a long time where any corrosive gas (H2S, etc.) exists; otherwise the parts or sound generator may be corroded and result in improper operation.
- Be careful not to drop the piezoelectric buzzer.
Frequently Asked Questions
QWhat is the rated voltage and operating voltage range of this piezoelectric buzzer?
The rated voltage is 16V AC. The operating voltage range is 1V to 25V, offering flexibility for a wide range of circuit applications.
QWhat is the resonant frequency of this buzzer, and why does it matter?
The resonant frequency is 2000±500 Hz. Operating at or near the resonant frequency ensures maximum sound output efficiency. At 10cm distance, the sound output reaches ≥75 dB.
QIs this piezoelectric buzzer suitable for outdoor use?
This buzzer is designed primarily for indoor use. If outdoor deployment is required, adequate waterproofing measures must be applied, as exposure to moisture can cause improper operation. Note that the piezo element does include a water-resistant coating as a standard feature.
QWhat soldering conditions are recommended when installing the buzzer?
Soldering should be performed at a maximum temperature of 350°C (80W max.) using a soldering iron, completed within 5 seconds. A solder containing silver is recommended to ensure reliable electrical connections without damaging the buzzer.
QWhat is the housing material, and what are the operating temperature limits?
The housing is made of PPO (Polyphenylene Oxide), a durable engineering plastic. The buzzer operates reliably within a temperature range of -20°C to +80°C, making it suitable for a variety of indoor environments.
QCan DC voltage be applied to this piezoelectric buzzer?
No. Applying DC bias to the piezoelectric buzzer is not recommended, as it may reduce insulation resistance and negatively affect performance. Always ensure the applied voltage does not exceed the specified operating range of 1V to 25V.