20mm 1.7 MHz Piezoelectric Ultrasonic Atomizer Transducer Element
Currently unavailable
No store has this product in stock right now. Prices below are the last ones we recorded.
Prices updated: 13 Oct 2026
Price history
Lowest daily price, last 90 days
Not enough price history yet.
About this product
A 20 mm piezoelectric ultrasonic transducer designed for humidifier and atomizer applications, with a resonant frequency of 1.70 MHz ±0.05 MHz. It has a white rubber grommet seal, leads about 110 mm long, and a glass composite glaze on its front face for resistance to corrosive impurities. It must be driven by a matching high-frequency oscillator circuit.
Specifications
- Type
- Piezoelectric transducer
- Diameter
- 20 mm (25 mm with rubber grommet)
- Resonant frequency
- 1.70 ±0.05 MHz
- Resonant impedance
- ≤2.0 Ω
- Static capacitance
- 1700 pF
- Electromechanical coupling coefficient
- ≥0.45
- Lead length
- Approximately 110 mm
- Average life
- 5000 hours
Frequently asked questions
Can I connect it directly to an Arduino or ESP32 pin?
No. Standard microcontroller PWM outputs cannot produce a 1.7 MHz drive signal, so the element needs a dedicated oscillator and driver circuit tuned to its resonant frequency. Confirm the frequency matches your equipment as the listing advises.
Can it run without water?
It is meant to atomize water in contact with its front face. Running it dry is not recommended, and the element should be used only in a suitable humidifier or atomizer design.
