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Hydz D12H5.5 Piezoelectric Sounder

Short Description:


Microcomputers are widely used for microwave ovens, air conditioners, cars, toys, timers, and alarm equipment. Externally driven piezoelectric sounders are used in digital watches, electronic calculators, telephones and other equipment.

They are driven by a signal (ex.: 2048Hz or 4096Hz) from an LSI and provide melodious sound.

1. Low power consumption

2. Noiseless and highly reliability

Product Detail

Product Tags

Electrical Characteristics

Part No:HYR-12055


Resonance Frequency (KHz)



Max Input Voltage (Vp-p)



Capacitance at 120Hz (nF)



Sound Output at 10cm (dB)

≥80 at 4.0KHz Square Wave 12Vp-p


Current Consumption (mA)

≤2 at 4.0KHz Square Wave 12Vp-p


Operating Temperature (℃)



Storage Temperature (℃)



Weight (g)



Housing Material

Black PPO

Dimensions and Material (unit: mm)

hydz D12H5.5 piezoelectric sounder

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 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 corroded and result in improper operation.

• Be careful not to drop the piezoelectric buzzer.

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