Payment & Shipping Terms:
|Other Name:||Active Buzzer||Rated Voltage:||DC 12V|
|Resonant Frequency:||2800 ± 500Hz||Rated Current:||Max.20mA|
|Sound Pressure Lever:||Min.90dB±10||Material:||ABS|
smd chip resistor,
pir motion sensor
Φ30mm active piezo buzzer intermittent with 55mm wire and connector for auto
This interrupted buzzer is customized for our client.
A buzzer is used in the domestic, official and industrial fields and it has almost entirely replaced the electro-mechanical bell. In houses and offices, the buzzer is used to catch the attention of people. In the industrial arena, it is mostly used as an alarm device.
Piezo buzzer is an electronic device commonly used to produce sound. Light weight, simple construction and low price make it usable in various applications like car/truck reversing indicator, computers, call bells etc.
Difference between piezo buzzer & magnetic buzzer:
A piezo buzzer generates sound because of the piezoelectric effect from the piezoelectric ceramic which drives the metallic diaphragm to vibrate.
A magnetic buzzer is based on the electromagnetic principle, the metal diaphragm is pulled when input the power, and spring back without power.
The piezo buzzer is driven by square waves, and the magnetic buzzer needs 1/2 square waves to drive.
We suggest inputting higher voltage for a piezo buzzer, normally over 9V to have enough SPL. On the other hand, a magnetic buzzer can be driven to generate 85 dB by only 1.5V, but the consumption of the current will be much higher than Piezo one.
To compare the two types of buzzers, the magnetic type can have lower frequency response with the same dimension.
Though being limited by the dimension, the SPL of a magnetic buzzer can only reach to 90 dB. The piezo buzzer can achieve the SPL of 120 dB in some spec., some larger size can also easily reach to 100 dB.
|Piezo buzzer||Magnetic buzzer|
|Start method||Piezoelectric effect||Electro-magnetic effect|
|Max. current consumption at rated voltage(mA)||20|
|Min. sound output at 100cm at rated voltage(dB)||90±10|
|Environment protection regulation||RoHS|
|Buzzer soldering process||Soldering parameter|
|Inclusive lead||Reflow soldering||230±10||Above 170℃ time 40~70||2|
|Lead free||Reflow soldering||245±15||Above 180℃||3|
Contact Person: Mr. Roy Zhang
Tel: 86 574 56807757