Introduction to Piezo Buzzer

Specifications:
Rated Voltage electromagnetic buzzer driven by 1/2 square wave (V o-p)
Operating Voltage Applicable voltage range for normal operation, but it is not guaranteed that the minimum sound pressure can still be reached below the rated voltage
Consumption Current The amount of continuous current consumption after normal sounding, and the current required at the instant of startup generally requires at least three times the continuous current consumption
Direct Current Resistance
Sound Output Add rated voltage, 1/2 square wave, measured with Db meter at a distance of 10cm
Rated Frequency The buzzer still sounds at each frequency. The rated frequency refers to the maximum recommended frequency point with good sound pressure consistency.
Operating Temp. Temperature to maintain normal operation -30-+ 70 degrees
How to choose:
Driving method If it is unable to provide the frequency signal for the buzzer to work, consider using the AX series (including the driving circuit) and giving DC voltage.
Size Size affects frequency, and small size will have higher frequency.
The voltage is calculated by V 0-P (1/2 square wave).
The fixed method DIP is the cheapest, followed by the welding wire, and the SMD cost is the highest.
Welding method: The AS series can be used for hand welding, and the frequency of air holes at the bottom can be lower. The AC series is recommended to use the oven, and the reliability is better.