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9*10.5*3.2mm 3.6V wireless SMD magnetic buzzer for warming car
Description:
A magnetic buzzer is based on the electromagnetic principle, the metal diaphragm is pulled when input the power, and spring back without power.
SMD magnetic buzzer features in small volume, light weight, convenient installation,especially in low voltage but high sound. And a passive buzzer emits a tone when a voltage is applied across it. Because it does not have built-in oscillating 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.
To compare the two types of buzzers(active and passive buzzer), 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.
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.
Specifications:
| Type | Unit | 9032WS |
| Rated voltage | V | 3.6 |
| Operating voltage | V | 2-4 |
| Rated current | mA | ≤90 |
| Coil resistance | Ω | 16±3 |
| Sound output at 30cm | dB | ≥85 |
| Resonant frequency | Hz | 2700 |
| Operating temperature | ℃ | -20~+70 |
| Storage temperature | ℃ | -30~+80 |
| Weight | g | 1.5 |
Precautions for use:
• Do not apply DC bias to the buzzer; otherwise insulation resistance may become low and affect the performance.
• 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.
• 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℃ max.(80W max.)(soldering iron trip) within 5 seconds using a solder containing silver.
• Avoid using the 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.
Dimension: (mm)
Tolerance: ±0.5
Continuous tone
Frequency response: