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Electrical Characteristics
| Part No：HYR-1740A | ||
| 1 | Resonance Frequency (KHz) | 4.0 |
| 2 | Max Input Voltage (Vp-p) | 30 |
| 3 | Capacitance at 120Hz (nF) | 15,000±30% at 100Hz |
| 4 | Sound Output at 10cm (dB) | ≥85 at 4.0KHz Square Wave 12Vp-p |
| 5 | Current Consumption (mA) | ≤8 at 4.0KHz Square Wave 12Vp-p |
| 6 | Operating Temperature (℃) | -20～+70 |
| 7 | Storage Temperature (℃) | -30～+80 |
| 8 | Weight (g) | 0.7 |
| 9 | Housing Material | Black PBT |
Dimensions and Material (unit: mm)
Tolerance：±0.5mm Except Specified
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 piezo electric 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 tip) 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
Q
What is the resonance frequency of the HYR-1740A piezoelectric buzzer?
The HYR-1740A has a resonance frequency of 4.0 KHz, making it suitable for alert and notification applications requiring a clear, audible tone.
Q
What is the maximum input voltage for the HYR-1740A?
The maximum input voltage for the HYR-1740A is 30 Vp-p. Supplying any voltage higher than this rating may damage the buzzer and is strictly not recommended.
Q
Can the HYR-1740A piezoelectric buzzer be used outdoors?
The HYR-1740A is designed for indoor use only. If outdoor use is required, adequate waterproofing measures must be applied, as moisture exposure will cause abnormal operation.
Q
What soldering conditions are recommended for the HYR-1740A?
Solder the buzzer terminal at a maximum of 350°C (80W max.) within 5 seconds using a silver-containing solder to ensure reliable connections without damaging the component.
Q
What is the operating temperature range of the HYR-1740A?
The HYR-1740A operates within a temperature range of -20°C to +70°C, with a storage temperature range of -30°C to +80°C, ensuring reliability across a wide range of environments.
Q
What housing material is used in the HYR-1740A buzzer?
The housing of the HYR-1740A is made of Black PBT (Polybutylene Terephthalate), a durable thermoplastic known for its excellent electrical insulation properties and heat resistance.