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20mm 1.7MHz Ultrasonic Atomizer Disc – 12V Pre-Wired with 60mm Leads & 20mm Sealing O-Ring for Humidifier/Fogger Replacement

SKU: FA2212-3-1
Disc Diameter

20mm
Ultrasonic Frequency

1.7MHz
Operating Voltage

12V DC
Disc Type

Ceramic piezoelectric
Lead Length

60mm (pre-wired)
Sealing O-Ring

20mm included
Lifespan

3000–5000 hours (typical)
Application

Humidifier/fogger replacement

The 20mm 1.7MHz Ultrasonic Atomizer Disc is a high-quality replacement component designed for humidifiers, foggers, and misting devices. It features a 20mm ceramic ultrasonic disc that operates at 1.7MHz, delivering reliable, high-volume atomization performance. The disc comes pre-wired with 60mm leads and includes a 20mm sealing O-ring, making it a complete drop-in replacement solution for compatible humidifier and fogger units.

At the heart of the disc is a ceramic piezoelectric element that vibrates at 1.7MHz when driven by an appropriate driver circuit. This high-frequency vibration breaks water into fine mist particles, producing a consistent, visible mist output. The 20mm diameter is the most common size for humidifier atomizers, making this disc compatible with a wide range of standard humidifier and fogger models.

The 12V operating voltage is a key feature of this disc. Unlike standard 5V atomizers, this disc is designed for 12V driver circuits, which are commonly used in automotive, industrial, and larger humidifier applications. The higher voltage allows for efficient atomization with good mist output.

The 1.7MHz operating frequency produces a fine mist with good volume, making it suitable for:

  • Home humidifiers — Bedroom, office, and living space humidification

  • Commercial humidifiers — Larger spaces and continuous operation

  • Aromatherapy diffusers — Scent distribution

  • Fog machines — Small-scale fog and mist effects

  • Model-making foggers — Diorama and display effects

The pre-wired 60mm leads simplify installation and replacement. The leads are already attached to the disc, eliminating the need for soldering in tight spaces. The 20mm sealing O-ring ensures a watertight seal when the disc is installed in the humidifier chamber, preventing leaks and ensuring reliable operation.

The disc is widely used as a replacement part for ultrasonic humidifiers, fog machines, aromatherapy diffusers, model-making foggers, and DIY misting projects. It is a consumable component that may need periodic replacement depending on water quality and usage conditions.

The disc is designed for continuous operation when properly immersed in water, with a typical lifespan of 3000–5000 hours. It is a consumable component that may need periodic replacement depending on water quality and usage conditions.

Important Note: The atomizer disc must be fully immersed in water during operation. Do not operate the disc dry, as this will cause overheating and permanent damage. Use clean water (preferably distilled) to prevent mineral buildup on the disc surface. Ensure the driver circuit is compatible with the disc’s 1.7MHz frequency and 12V operating voltage.

Whether you are replacing a worn-out atomizer in a humidifier, building a custom fogger, or maintaining a misting system, the 20mm 1.7MHz Ultrasonic Atomizer Disc provides a reliable, ready-to-install solution. It is suitable for individual makers, repair technicians, and businesses purchasing in bulk for product development or service applications.

Features

  • 20mm ceramic ultrasonic disc — Standard size for wide humidifier compatibility

  • 1.7MHz operating frequency — Reliable atomization with good mist volume

  • 12V operating voltage — Compatible with 12V driver circuits

  • Pre-wired 60mm leads — Ready to install, no soldering required

  • 20mm sealing O-ring included — Watertight seal for leak-free operation

  • Drop-in replacement — Compatible with many humidifier and fogger models

  • Fine mist output — Consistent atomization for effective humidification

  • Long lifespan — 3000–5000 hours typical with proper use

  • Wide application range — Humidifiers, foggers, diffusers, model effects

  • Compact and lightweight — Easy to handle and install

Technical Specifications 

# Parameter Specification
1 Disc Diameter 20mm
2 Ultrasonic Frequency 1.7MHz
3 Operating Voltage 12V DC
4 Disc Type Ceramic piezoelectric
5 Lead Length 60mm (pre-wired)
6 Sealing O-Ring 20mm included
7 Lifespan 3000–5000 hours (typical)
8 Application Humidifier/fogger replacement

Usage

Getting Started

  1. Identify the driver circuit — Ensure your humidifier or fogger uses a 12V driver circuit compatible with a 1.7MHz atomizer disc.

  2. Remove the old disc — Carefully remove the worn or damaged atomizer disc from the humidifier chamber. Note the orientation and wiring connections.

  3. Install the new disc — Place the new 20mm disc into the chamber, ensuring the 20mm sealing O-ring is properly seated to prevent leaks.

  4. Connect the leads — Connect the pre-wired 60mm leads to the driver board terminals. Observe correct polarity.

  5. Test operation — Immerse the disc in water and apply power. You should see fine mist rising from the water surface. If no mist is produced, check that the disc is fully immersed and the wiring is secure.

Important Safety Notes

  • Do not operate dry — The atomizer disc must be fully immersed in water during operation. Dry operation will cause overheating and permanent damage.

  • Use clean water — Distilled or filtered water is recommended to prevent mineral buildup on the disc surface.

  • Match frequency — Ensure the driver circuit matches the disc’s 1.7MHz frequency for proper operation.

  • Match voltage — Use a 12V driver compatible with the disc’s operating voltage.

  • O-ring seal — Ensure the O-ring is properly seated to prevent water leaks.

Typical Applications

  • Humidifier repair — Replace worn or damaged atomizer discs

  • Fogger maintenance — Restore mist output in fog machines

  • Aromatherapy diffusers — Replace atomizer discs in diffusers

  • Model-making foggers — Maintain mist effects for dioramas

  • DIY misting projects — Build custom humidification systems

  • Service and repair — Stock replacement parts for customer repairs

Notes for Business Buyers

  • Ready-to-install — Pre-wired leads and included O-ring simplify replacement.

  • Consumable component — Atomizer discs are wear items that require periodic replacement.

  • Wide compatibility — 20mm 1.7MHz discs are used in many humidifier and fogger models.

  • Suitable for bulk purchasing — Ideal for repair shops, humidifier manufacturers, and service providers.

Q: What is the 20mm 1.7MHz Ultrasonic Atomizer Disc used for?

It is a replacement atomizer disc for humidifiers, foggers, and misting devices that use a 12V driver circuit and 1.7MHz operating frequency.

Q: What are the dimensions of this disc?

The disc is 20mm in diameter and comes with a 20mm sealing O-ring.

Q: What is the operating voltage?

The disc operates at 12V DC.

Q: What is the operating frequency?

The disc operates at 1.7MHz.

Q: Is the disc pre-wired?

Yes. The disc comes with 60mm pre-wired leads for easy installation.

Q: Does the disc include a sealing O-ring?

Yes. A 20mm sealing O-ring is included to ensure a watertight seal.

Q: How long does the disc last?

The disc has a typical lifespan of 3000–5000 hours with proper use and maintenance.

Q: What type of water should I use?

Use distilled or filtered water to prevent mineral buildup on the disc surface.

Q: Can I use this disc with a 5V driver?

No. This disc requires a 12V driver circuit and operates at 1.7MHz. Using an incompatible driver may damage the disc or produce no mist.

Q: Can I purchase in bulk for a repair shop or product development project?

Yes. This disc is suitable for both individual users and business purchasing, including repair shops, humidifier manufacturers, and service providers.

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