Monitor Crystal

Quartz Monitor Crystals are indispensable components in thin-film deposition processes, providing precise monitoring of film thickness and deposition rates. At our facility, we take pride in manufacturing these crystals entirely in-house, from raw material sourcing to the final product. Our meticulous control over every step of production ensures unmatched quality and reliability.

Manufacturing Excellence

We begin with high-Q raw quartz, renowned for its exceptional purity and stability. Using super-precise wire saws, we cut the primary wafers with exacting accuracy. This is followed by a strictly controlled lapping and contouring process, which forms the foundation of a superior Quartz Monitor Crystal. To further enhance quality, we employ a proprietary six-stage washing process and angstrom-level electrode plating, all conducted in cleanroom conditions. These advanced techniques result in crystals that deliver unparalleled performance and longevity.

Technical Specifications of Quartz Monitor Crystals

Our Quartz Monitor Crystals are engineered to meet diverse application needs, with specifications tailored for precision and reliability:

• Marking Frequency: Available in 6.000 MHz and 5.000 MHz options.
• Nominal Frequency: Ranges from 4.960 MHz to 6.060 MHz, depending on the model.
• Adjustment Tolerance: ±5KHz to ±10KHz at 25°C, ensuring consistent performance.
• Crystal Cutting: AT-cut or IT-cut designs for enhanced temperature stability.
• Oscillation Mode: Foundation mode for accurate frequency control.
• Resonance Resistance: ≤15 Ω or ≤20 Ω, depending on the model.
• Shunt Capacitance: ≤7 pF for minimal interference.
• Operating Temperature: 0°C to +70°C, with storage temperatures ranging from -40°C to +105°C.
• Diameter: 13.97mm or 12.45mm, with tight tolerances of ±0.03mm.
• Electrodes: Available in chrome/gold, aluminum/silver, or alloy coatings for maximum versatility.

Benefits of Quartz Monitor Crystals

Our Quartz Monitor Crystals offer several advantages that make them the preferred choice for thin-film deposition applications:

• Precision Monitoring: The plano-convex configuration suppresses unwanted modes, ensuring greater accuracy in film thickness measurement.
• Temperature Stability: AT-cut crystal orientation provides enhanced stability across a wide range of operating temperatures.
• Longevity and Reliability: Improved adhesion between the electrode and crystal ensures durability and extended service life.
• Electrode Options: Gold or silver coatings maximize electrode life and chemical stability.
• Comprehensive Testing: Each crystal undergoes rigorous testing for frequency and activity, including series resistance verification.
• Compatibility: Designed to work seamlessly with all CQT sensor heads and most other manufacturers’ instruments.
• Cleanroom Processing: Manufacturing in cleanroom environments minimizes particulate contamination, ensuring pristine quality.

How to Choose the Right Crystal

Selecting the appropriate Quartz Monitor Crystal depends on your specific application requirements:

• Gold Electrode Crystals: Ideal for most applications due to their low contact resistance and high chemical stability. Best suited for monitoring low-stress material coatings like gold, silver, and copper films.
• Silver Electrode Crystals: Recommended for high-heat processes, such as sputtering, and for improving oxide deposition efficiency.
• Alloy Electrode Crystals: Perfect for optical coatings involving dielectric materials and semiconductor processes with high-stress materials like SiO, SiO₂, MgF₂, and TiO₂.

Packaging Options

To ensure convenience and protection during handling, we offer three packaging options:

• Black Flat-Pack Carousel Dispenser: Holds 10 crystals in vacuum-sealed plastic bags, easily extracted using a vacuum pencil or directly dispensed into the holder.
• White Flat-Pack Carousel Dispenser: Similar to the black version, this dispenser also holds 10 crystals and ensures safe handling.
• Compact Box Packaging: Contains 5 crystals individually sealed in vacuum plastic bags and placed in dust-free paper bags, ideal for smaller-scale operations.

Conclusion

Our Quartz Monitor Crystals are designed to deliver exceptional performance, reliability, and precision in thin-film deposition processes. With advanced manufacturing techniques, rigorous quality control, and versatile electrode options, we provide solutions tailored to meet your specific needs. Whether you require gold, silver, or alloy-coated crystals, our products are engineered to ensure optimal results. Trust our expertise to support your processes with the highest-quality Quartz Monitor Crystals available.