Project Description

Gold Quartz Monitoring Crystals 5 MHz & 6MHz AT-Cut for Thin Film Deposition Control

Do you want to purchase high quality quartz monitor crystal sensors directly from the manufacturer? We originate from a specialized quartz crystal manufacturer who has a history of 60 years and has manufactured quartz monitor crystal sensors for 30 years. Our crystal components have delivered excellent performance in several satellite and manned space missions. The aerospace-grade manufacturing system ensures superior quality of quartz monitor crystal sensors. Our staff participate in developing Chinese national standard for quartz monitor crystal sensors products. The quartz monitor crystal sensors made in China take more than 80% share of global market. We are the leader of high quality crystals in China. At present, we mainly offer 5 MHz or 6 MHz quartz monitor crystal sensors with gold, silver or alloy-coated electrodes. Our products can be customized depending on your need.



SungThai offers both 5 MHz and 6 MHz AT-cut quartz thickness-monitor crystals. These products are offered with gold, silver, and alloy coated electrodes for major optical and vacuum coating applications, PVD, and for use in thin film deposition processes.

SungThai quartz thickness-monitor crystals are suitable to be used in different kinds of vacuum coating equipment of high accuracy such as Inficon™, Ulvac™, or Balzers™.

Our 5 MHz products are commonly used in Japanese market or coating devices made in Japan, and 6 MHz products are most widely used by customers.

Advantages of Gold Quartz Monitoring Crystals,5 MHz and 6MHz,AT-Cut for Thin Film Deposition Control

Stability, accuracy and longevity are most important features of aerospace components. Our quartz monitor crystals manufacturing system carries the gene of aerospace industry. If you want the quartz monitor crystals that can work well in space, perhaps we are the best choice.

We originate from a dedicated vertical quartz crystals component manufacturer with a history of 60 years which is specialized in manufacturing quartz monitor crystals for 30 years. You don’t worry that our products are outsourced from any third party manufacturer.

Although our products are 100% tested in the factory, what’s more important is strict process/quality control which ensures high quality of final products. After our products are released from the factory, they have been proven by millions of successful process runs.

As the manufacturer, we control the product quality from the beginning, i.e. raw materials. We use first-class quartz bars with long growth cycle and high Q value as the raw materials. We customize special magnetron sputtering equipment to provide very high density and strong adhesion.

Direct sales from the manufacturer ensure reliable supply and provide competitive price. Apart from supply of standard products, we can customize products depending on your need.

Our core competitiveness is based on our general expertise in quartz crystals products accumulated for 60 years and our professional engineers. Although the competitors can also buy quality materials and modern machines, good products can be manufactured only by skilled professional engineers together with modern equipment, manufacturing system and excellent technology.

Certification and registration:

1.Developer of crystal standard

Developer of crystal standard

2.ISO certification

ISO certification

3.Supplier for aviation&aerospace applications

Supplier for aviation&aerospace applications

4.Supplier for military and defense applications

Supplier for military and defense applications

End users of our products:

Phoenix Optics, Carl Zeiss, Luxottica , Aviation Industry Corporation of China, China Aerospace

Why they choose Gold Quartz Monitoring Crystals,5 MHz and 6MHz,AT-Cut for Thin Film Deposition Control

China manufactures about 80% of quartz monitor crystals products in the world; SungThai product team is the developer of Chinese national industrial standard, and is the technical leader.

In 1980’s, we have known that their quartz crystals components have good reputation in international market; their precision equipment and manufacturing process are excellent.

Once aerospace devices are launched into space, any problem in any part will result in failure of the mission; SungThai products have experienced many great space programs, and have delivered good performance up to now. We trust SungThai.

Our engineers are very skillful and experienced; in the past, we bought economical products with short service life; by replacing them more frequently, we can get similar results as the precision products. Now, we don’t need to do so because SungThai offers precision products at economical price. Our engineers are much easier.

All products manufactured from SungThai are 100% tested; having been used for many years, the products work well without any problem.


1) Always hold the edge of crystal with plastic tweezers. Do not touch the center of quartz monitor crystals because grease, dirt and dust will diminish the oscillation of crystal.

2) Keep the holder clean. Do not allow debris to contact the center, front surface or rear surface of the quartz monitor crystals. Any particles present between quartz monitor crystals and end will affect electrical contact and generate stress point, thus affecting normal oscillation of the quartz monitor crystals.

3) If possible, wash the crystal with anhydrous ethanol beforehand; after the crystal is installed onto the end, try to clean the surface of crystal by using dry nitrogen and oil-free air jet at low pressure. It can remove dust and debris that may contact the crystal in the installation process.

Convenient packages

Black flat-pack carousel dispenser with vacuum plastic bags-holds 10 crystals which are extracted by vacuum pencil or dispensed directly into holder

Clean room quartz crystal package enables convenient dispensing of the crystals directly from the package to the sensor, minimizing operator handling and risk of contamination. To make the crystal package more cleanroom-friendly, we eliminate the paper and foam inserts and make the packages stackable for easy storage.

Part number

Gold Electrode crystals 6MHz Standard Double Anchor

Gold Electrode crystals 6MHz Standard Double Anchor 01

Gold Electrode crystals 6MHz Standard Full pad

Gold Electrode crystals 6MHz Standard Full pad 02

Gold Electrode crystals 5MHz Standard Double Anchor

Gold Electrode crystals 5MHz Standard Double Anchor 03

Gold Electrode crystals 5MHz Standard Full pad

Gold Electrode crystals 5MHz Standard Full pad 04

Related Quartz Monitor Crystals Products


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  • Developer of Chinese industrial standard for crystals.

  • OEM/ODM manufacturing of crystal components for nearly 60 years