Payment & Shipping Terms:
|Other Name:||5v Passive Buzzer||Rated Voltage:||1.5V; 3V; 5V|
|Resonant Frequency:||2048Hz||Rated Current:||Max.30mA|
|Sound Pressure Lever:||Min.82dB/10cm||Coil Resistance:||8Ω;16Ω;42Ω|
magnetic door buzzer,
smd magnetic buzzer
Ultra thin Φ12*6mm split pin lead type passive electromagnetic buzzer
Electromagnetic buzzers featuring high reliability consists mainly of products that support automotive applications. They are directly mountable to PCBs due to their pin terminals, and are available in small φ12 type and φ16 type designed for broadband applications.
A passive buzzer emits a tone when a voltage is applied across it. It also requires a specific signal to generate a variety of tones.
Widely used in quartz crystal clock, air-conditioner instrument, telephone, BP, copycat, alarm, instrument and apparatus, UPS power supply, motorcycle steering gear, electronic toy, computer terminal, and electronic watch.
|Sound output at 10cm||dB||≥82||≥82||≥82|
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.
Difference between two main types of buzzer: active and passive.
An active buzzer has a built-in oscillating source, so it will make sounds when electrified. But a passive buzzer does not have such source, so it will not tweet if DC signals are used; instead, you need to use square waves whose frequency is between 2K and 5K to drive it. The active buzzer is often more expensive than the passive one because of multiple built-in oscillating circuits.
Precautions for use:
• Do not supply any voltage higher than applicable to the buzzer.
• Do not use the buzzer outdoors. It is designed for indoor use. If the buzzer has to be used outdoors, provide it with waterproofing measures; it will not operate normally if subjected to moisture.
• Do not apply any mechanical force to the buzzer; otherwise the case may deform and result in improper operation.
• Be sure to solder the buzzer terminal at 350℃ max.(80W max.)(soldering iron trip) within 5 seconds using a solder containing silver.
• Be careful not to drop the buzzer.
Contact Person: Mr. Roy Zhang
Tel: 86 574 56807757