12*7.5mm active electromagnetic buzzer with oscillator circuit
Description:
A buzzer can be either AC or DC operated and can be mounted
anywhere according to the need and purpose. When used as an alarm
device, the buzzer is usually mounted on a control panel. The
latest technological developments have led to using buzzers in
sirens and signals for a wide range of applications.
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.
There are 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.
Difference between piezo buzzer & magnetic buzzer:
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.
Specifications:
| Type | Unit | 12075YT01 | 12075YT03 | 12075YT05 | 12075YT09 | 12075YT12 | 12075YT24 |
| Rated voltage | V | 1.5 | 3 | 5 | 9 | 12 | 24 |
| Operating voltage | V | 1.3-2.5 | 2-5 | 3-7 | 8-12 | 9-15 | 16-30 |
| Rated current | mA | ≤25 | ≤30 | ≤30 | ≤30 | ≤30 | ≤45 |
| Sound output at 10cm | dB | ≥80 | ≥83 | ≥85 | ≥85 | ≥85 | ≥87 |
| Resonant frequency | Hz | | 2600±300 |
| Operating temperature | ℃ | | -20~+70 |
| Storage temperature | ℃ | | -30~+80 |
| Weight | g | | 2 |
Application:
• Medical equipment: glucose meter for blood, temperature test
instrument, ECG monitor, fetal heart tester, blood glucose meter
• Home appliances: refrigerator, washing machine, computer, air
conditioner, telephone, microwave oven, oven, TV set, keychain
• Electronic products: mobile phone, remote control, anti-lost
device, POS machine, electronic toy, robot, watch, facial massager,
instruments and apparatuses, unmanned aerial vehicle
• Security equipment: warning lights, anti-theft electronic locks,
safety equipment and sirens/alarms/car alarm.
Dimension: (mm)
Tolerance: ±0.5
Frequency response:
