TAT BPC3025W150-1235 Active Piezoelectric Ceramic Buzzer 30*25mm 5-24VDC 3500Hz Wired Piezo Sounder

Key Features

• Wide Voltage Operation 5–24 VDC — One model replaces 5V, 12V and 24V SKUs. Ideal for multi-platform product lines.

• Active Piezo Design with Built-in Circuit — DC power on = sound on. No external oscillating circuit or microcontroller PWM needed.

• High SPL, Low Current Draw — Piezo ceramic element delivers 85±5dB SPL at 10cm with significantly lower current consumption than magnetic buzzers.

• Flange Mount with M3 Screw Holes — Two Φ3.0 mounting holes and a 40mm flange allow secure panel installation; the M8 threaded body also supports nut-on-panel mounting.

• Pre-Terminated Wire Leads — 150±5mm red/black flying leads (Red = +, Black = -) for quick wiring into existing harnesses.

• Continuous Tone, 3500 Hz Resonant Frequency — Penetrating, easy-to-recognize audible alert for status and alarm applications.

• RoHS Compliant, China-Made OEM Quality — Consistent performance, long service life, available for volume production.

Technical Specifications

Typical Applications

• Home Appliances — microwave ovens, washing machines, dishwashers, rice cookers, range hoods

• Security & Alarm Systems — door access controllers, smoke detectors, burglar alarms, panic buttons

• Industrial Equipment — CNC machines, PLC control cabinets, instrumentation, UPS systems, vending machines

• Automotive & Transportation — reversing alarms, seatbelt warnings, EV chargers, parking sensors

• Medical Devices — patient monitors, infusion pumps, diagnostic equipment (non-life-critical indication)

• Smart Home & IoT — smart speakers, gateways, alarm panels, touchless sensors

Why Choose TAT Piezo Buzzers?

1. Engineered for Harsh Environments — sealed piezo element resists dust and moisture better than open magnetic buzzers.

2. Lower Power, Louder Alert — piezo technology draws a fraction of the current of equivalent magnetic buzzers, extending battery life.

3. No Arcing, Longer Life — no electromagnetic coil or moving contacts; solid-state piezo element means millions of cycles without wear.

4. OEM/ODM Ready — customize frequency (1kHz–6kHz), SPL, wire length, connector (JST / PH / XH), sound pattern (continuous / intermittent / sweeping) and housing color.

5. Sample & Volume Support — free sample evaluation, 7–15 day lead time for mass production, global shipping via DHL/FedEx.

Frequently Asked Questions

Q1: Is this buzzer active or passive? It is an active buzzer with a built-in oscillator circuit. Apply 5–24 VDC directly and it sounds immediately; no square-wave drive signal from a MCU is required.

Q2: Can I use it at both 12V and 24V? Yes. The BPC3025W150-1235 is a wide-voltage model designed to operate reliably across 5V to 24VDC, making it a single-SKU solution for multi-voltage product lines.

Q3: What is the polarity of the wires? Black wire = Negative (−), Red wire = Positive (+). Reverse polarity will not damage the buzzer under normal conditions but will prevent sound output.

Q4: How loud is it? Typical output is 85 ± 5 dB SPL measured at 10 cm, which is clearly audible in office, workshop and residential environments. Higher-SPL versions (up to 105 dB) are available on request.

Q5: Can you customize the wire length or add a connector? Absolutely. Standard lead length is 150mm. We offer custom lengths (50–500mm) and pre-crimped connectors including JST PH2.0, XH2.54, Molex and custom harnesses.

Q6: What certifications do you have? All TAT piezo buzzers are RoHS compliant. REACH and UL recognition are available for qualified volume orders.