27mm Piezoelectric Sensor / Buzzer / Transducer | SWT 3BA27020F039H23SE0

The 27mm Piezoelectric Sensor / Buzzer / Transducer is a high-sensitivity piezo disc designed to convert mechanical vibration into electrical signals, and vice versa. Commonly used as a knock sensor, vibration sensor, or piezo buzzer, this lightweight transducer is ideal for robotics, security systems, power generation projects (such as footstep energy harvesting), and general sensing applications.

Manufactured by SWT Electronics CO. LTD, this 27mm piezo disc features a 3.9 kHz resonance frequency, <500 Ω resonance impedance, and a capacitance of 20nF. Its thin, lightweight brass construction ensures fast response, clear sound output, and stable operation across a wide temperature range.

Features / Specifications

• Manufacturer Part No: 3BA27020F039H23SE0

• Manufacturer: SWT Electronics CO. LTD

• Resonance Frequency: 3.9 kHz ± 0.5 kHz

• Resonance Impedance: <500 Ω

• Capacitance: 20nF ± 30% (at 1 kHz)

• Operating Temperature: –20°C to +70°C

• Storage Temperature: –30°C to +80°C

• Diameter: 27mm

• Features: Ultra-thin, lightweight, clear sound

• Ideal for knock sensing, vibration detection, buzzers, and piezo power generation.

Package Includes:
1 x Piezo Electric Sensor / Buzzer / Transducer – 27mm

Note: Image is for representation purposes only.