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Dedicated to global electroacoustic technology.
Electromagnetic Structure: Produces thick low-frequency beep tone, better penetration than piezo buzzers.
High Sound Pressure Level: Min.90dB @10cm, clear and noticeable alert sound.
Passive Design: No built-in oscillator; tone can be freely adjusted by MCU driving signal.
Wide Operating Voltage: Works steadily within 6~16Vp-p square wave input, rated at 12Vp-p.
Through-hole Pin Mount: Easy soldering and assembly on PCB boards.
Stable Temperature Performance: Reliable operation between -20℃ ~ +70℃.
RoHS Compliance: Complies with global environmental standards for export electronics.
Item | Specification | Test Condition |
|---|---|---|
Model | 25*12mm Passive Electromagnetic Buzzer, Pin Mount | - |
Rated Voltage | 12Vp-p | Square wave signal |
Operating Voltage | 6 ~ 16Vp-p | Square wave signal |
Rated Current | Max.60mA | At 1000Hz, 50% duty Square Wave,12Vp-p |
Sound Output | Min.90dB @10cm | At 1000Hz, 50% duty Square Wave,12Vp-p |
Coil Resistance | 115 ±15 Ω | - |
Resonant Frequency | 1000 Hz | - |
Operating Temperature | -20℃ ~ +70℃ | - |
Storage Temperature | -30℃ ~ +80℃ | - |
Net Weight | Approx.10g | - |
Compliance | RoHS | Yes |
Unless otherwise specified, parts are measured under ambient condition: Temperature: 5 ~ 35℃, Humidity: 45% ~ 85%R.H., Atmospheric pressure: 860 ~ 1060hPa. Standard measuring condition: Temperature: 25±3℃, Humidity: 60±10%R.H., Atmospheric pressure: 860 ~1060hPa.
The electromagnetic buzzer works by magnetic force. When square wave current flows through the internal coil, alternating magnetic field pulls and releases the metal diaphragm rapidly, causing vibration and sound. This is a passive electromagnetic buzzer, without built-in oscillation circuit. External MCU square wave driving signal is required. Compared with piezo buzzers, it provides fuller, lower-frequency warning sound.
This 25×12mm passive magnetic buzzer is commonly used for audio warning & prompt:
Industrial control panel alarm
Household appliance reminder
Security & anti-theft equipment
Medical instrument alert
Smart water / electric meter warning
Automatic machinery prompt device
We are professional manufacturer of electro-acoustic components. Custom service available for resonant frequency, sound pressure and pin specification. Samples can be supplied for prototype performance testing before mass production. RoHS certificate is available upon request. Please contact our sales engineer to get quotation and MOQ details.
Q: Is this electromagnetic buzzer active or passive? A: It is passive electromagnetic buzzer. External MCU square wave drive signal is required, no built-in oscillator.
Q: What is the resonant frequency? A: 1000Hz, low frequency tone with good penetration.
Q: How loud is this buzzer? A: Min 90dB measured at 10cm under 12Vp-p,1000Hz square wave.
Q: What is the coil resistance? A: 115±15Ω.
Q: Can I get samples for testing? A: Yes, samples available for customer verification.
Q: Does it comply with RoHS? A: Yes, this buzzer meets RoHS standard.
Send us your quantity and technical requirements to get competitive quotation or samples. Our electro-acoustic sales and engineering team will reply promptly.
