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Passive Piezo Design: No internal oscillation circuit. Tone can be flexibly adjusted by your external MCU square wave signal.
Ultra-Thin 2.5mm Height: Slim body saves precious PCB space, ideal for thin, compact and portable electronic products.
Low Power Consumption: Max rated current only 5mA, well-suited for battery-powered portable devices.
Low EMI Performance: No electromagnetic coil inside, no magnetic interference to nearby sensitive electronic circuits.
Wide Operating Temperature: Stable performance from -20℃ ~ +60℃ for indoor electronic applications.
Clear Audible Alarm: Minimum 80dB sound pressure level measured at 10cm distance for obvious warning sound.
RoHS Compliance: Meets global environmental standards for electronic export products.
Item | Specification | Test Condition |
|---|---|---|
Model | TAT BP1425W30-52 | - |
Type | Passive Piezoelectric Ceramic Buzzer, Pin Mount | - |
Resonant Frequency | 4800 ± 500 Hz | - |
Operating Voltage | 1 ~ 25 Vp-p | - |
Max Rated Current | 5 mA | At 4.8KHz, 50% duty Square Wave, 9Vp-p |
Sound Output | Min.80dB @10cm | At 4.8KHz, 50% duty Square Wave, 9Vp-p |
Capacitance | 10000 ±30% pF | At 1KHz |
Operating Temperature | -20℃ ~ +60℃ | - |
Storage Temperature | -30℃ ~ +70℃ | - |
Net Weight | Approx. 0.3g | - |
Environmental Compliance | RoHS | Yes |
This passive piezoelectric buzzer operates based on piezoelectric effect. When external square wave signal is applied to the piezo ceramic wafer, the ceramic sheet generates mechanical deformation and high-speed vibration to produce sound. As a passive type, there is no built-in oscillator. You need to input square wave signal from your MCU to trigger sound. Without copper coil, it produces very low electromagnetic interference, which is an advantage over electromagnetic buzzers for sensitive circuits.
This ultra-thin pin mount piezo buzzer is widely adopted for audio reminder and alarm signals:
Wearable electronic devices
Portable handheld instruments
Smart sensors & IoT modules
Small household control panels
Medical portable electronics
Mini security alarm equipment
We are professional manufacturer of electro-acoustic components. Custom service is available for BP1425W30 series. We can adjust resonant frequency, sound pressure level and pin length according to your project drawings. Samples can be offered for laboratory performance testing before mass production. RoHS certificate is available upon request. Contact our engineer team to confirm MOQ and quotation.
Q: Is BP1425W30-52 active or passive buzzer? A: It is passive piezo buzzer, no built-in oscillator. External MCU square wave signal is required to make sound.
Q: What is the maximum working current? A: Max rated current is 5mA, low power consumption for battery operated products.
Q: What is the dimension of this buzzer? A: Diameter 14mm, height only 2.5mm, ultra-thin design for compact PCB layout.
Q: What is the difference between piezo buzzer and electromagnetic buzzer? A: Piezo buzzer vibrates by ceramic wafer, low current & low EMI. Electromagnetic buzzer uses coil and diaphragm with higher current draw. Piezo type is preferred for thin miniaturized products.
Q: Can I get samples for testing? A: Yes, sample supply is available for your prototype and acoustic performance verification.
Q: Is this buzzer RoHS compliant? A: Yes, TAT BP1425W30-52 meets RoHS requirement, certificate can be provided.
