20mm 1.7MHz Glass Piezo Atomizer for Humidification Systems

Understanding the 20mm 1.7MHz Glass Piezo Atomizer

For engineers and procurement teams evaluating ultrasonic nebulization components, the 20mm 1.7MHz glass piezo atomizer represents a specific category of high-power atomization sheets designed for large-volume liquid dispersion. Within this product segment, Gd SWT Smart Tech Co., Ltd. (Dongguan Sweetsound), operating under the brand name SWT, offers the ATD20-170GSW model — a 20mm diameter unit engineered at a 1700KHz (1.7MHz) operating frequency, part of its broader Glass Glaze/Ultrasonic Atomization Sheets product line.

This product line is positioned specifically for high-power nebulization applications, distinguishing it from finer medical-grade microporous mesh atomizers. Instead, the glass glaze series targets scenarios that demand large output, making it a practical fit for humidification systems, as well as agricultural applications such as farms and animal husbandry. A notable technical characteristic of this series is its multi-head compatibility — the atomizers can be configured across 2, 4, 6, 8, 10, and 12 heads, allowing system integrators to scale output volume according to project requirements without switching to an entirely different component family.

Engineering Behind SWT’s High-Output Atomization Sheets

The core value of the 20mm 1.7MHz atomizer lies in its high-power nebulization capability, which is directly tied to how the driving circuit is engineered. According to SWT’s documented driving method, the ultrasonic humidifier circuit consists of three integrated components: a power supply circuit, an oscillator circuit, and a water level control circuit.

How the Driving Circuit Operates:
The process begins when AC voltage is stepped down by a transformer. This reduced voltage then passes through a bridge rectifier filter circuit, which provides stable working voltage to both the water level control circuit and the oscillator. Simultaneously, the circuit emits corresponding frequency signals to drive the oscillator to operate, ensuring the atomizer functions at its designed 1.7MHz frequency consistently. This layered circuit design is what allows the 20mm unit to maintain the higher output levels needed for humidification and agricultural nebulization tasks, as opposed to lower-power, finer-mist applications.

Manufacturing Excellence and Quality Assurance

SWT’s ability to deliver consistent glass glaze atomization sheets is rooted in its integrated supply chain, which maintains comprehensive control over front, middle, and rear processes of piezoelectric ceramic production, including film squeezing, casting, and dry pressing. This vertical integration reduces the fragmentation commonly seen in piezoelectric ceramic supply chains and supports consistent product quality across production batches.

The company’s manufacturing methods are further defined by distinct formation techniques depending on sheet thickness: thin sheet formation relies on tape casting (flow casting), while thick sheet formation uses dry pressing. Complete processing then moves through squeezing, laminating, sintering, polarizing, and automated testing — a full-cycle approach that SWT has refined since beginning professional buzzer production and technology accumulation in 1991, later expanding into microporous atomization sheet production starting in 2006.

On the compliance side, SWT’s atomization product line is matched against a comprehensive certification set, including ISO13485, ISO14001, ISO9001, IATF16949, RoHS, REACH, MDR (EU2017/745), and FDA Requirement. This breadth of certification coverage reflects the company’s positioning across both industrial and regulated product categories, giving buyers documented assurance when sourcing atomization components for varied end-use environments.

Application Versatility Across Industries

The 20mm 1.7MHz glass piezo atomizer fits within SWT’s broader coverage of Smart Home & Appliances, where the company supplies feedback sounders for white goods and USB humidifiers. Beyond household humidification, the multi-head configuration capability positions this atomizer for Industrial & Maritime contexts as well, where the company’s stated coverage includes ultrasonic cleaning and flow sensing components. The stated applicability to farms and animal husbandry further extends the atomizer’s use beyond conventional home humidification into agricultural environments requiring sustained, high-volume moisture dispersion.

Manufacturing Scale and Technical Infrastructure

SWT’s production capacity offers relevant context for buyers evaluating supply reliability. The company operates a 24,000 square meter Dongguan headquarters housing plant, dormitory, and canteen facilities, supported by 170 staff members at that site, plus a Guizhou Branch (Bijie City) covering 4,000 square meters with 40 staff members. Across these facilities, SWT maintains over 400 sets of instruments and equipment, including large-scale automatic tunnel furnaces and automated assembly machines. The company’s R&D and Engineering personnel total between 70–85 people, out of a total staff count of over 200 people.

For buyers requiring customization, SWT offers one-on-one technical service solutions along with customized product development (OEM/ODM). Delivery timelines are structured with a sample lead time of 3-7 days and a bulk production lead time of 15–20 days, giving procurement teams predictable planning windows for both prototyping and volume orders.

Market Trust and Proven Reliability

SWT’s atomization and broader piezoelectric component lines are backed by a documented track record of long-term industrial partnerships. The company has maintained supply relationships with Panasonic since 2005 and Sanyo since 2007, alongside a partnership with Whirlpool established in 2010 for customized acoustic solutions across premium appliance lines — a relationship the company describes as delivering "persistent high-quality supply" that has "enhanc[ed] user interface sounds for international markets." While this particular case references acoustic components, it illustrates the same manufacturing discipline applied across SWT’s broader piezoelectric product portfolio, including its atomization sheets.

Client feedback compiled by the company points to recurring themes: customers highlight SWT’s "professional problem-solving," "excellent quality," and "strong service awareness" as key reasons for maintaining decades-long partnerships. These qualitative endorsements align with the company’s institutional standing — SWT has been recognized as a Guangdong Province Specialized and Innovative Enterprise and holds a documented industry ranking of top3 within its sector.

Why SWT Stands Out in Piezoelectric Atomization

For organizations sourcing a 20mm 1.7MHz glass piezo atomizer, SWT’s value proposition centers on three verifiable pillars: manufacturing scale, evidenced by its 250 million unit annual output capacity for piezoelectric components; regulatory readiness, demonstrated through its matched certification portfolio spanning medical, automotive, and environmental standards; and engineering transparency, reflected in its clearly documented driving circuit methodology for humidifier applications. Combined with its multi-head configuration flexibility (2 through 12 heads) and applicability across both humidification systems and agricultural nebulization, the ATD20-170GSW model offers a technically grounded option for buyers requiring high-output, certification-backed piezoelectric atomization components.

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