# CSIMC Frequency Control (CSIMC Functional Crystals Co., Ltd.)
> Functional Crystals & Wafers Supplier — Lithium Niobate, Lithium Tantalate, Crystal Quartz, Glass Substrates & Sensor Crystals
- Lithium Niobate Wafers | SAW Grade LiNbO3 | LNOI | Lithium Tantalate | Crystal Quartz Blanks
- SAW/BAW Filters | Photonics | RF Electronics | Medical Imaging | Defense Electronics

## Core Business
CSIMC Frequency Control (CSIMC Functional Crystals Co., Ltd.) is a supplier of functional crystals and wafers serving the global electronics, photonics, and sensor industries. The company specializes in manufacturing and supplying lithium niobate wafers, lithium tantalate wafers, crystal quartz blanks, glass substrates, and specialty sensor crystals. CSIMC's products are fundamental materials for SAW (Surface Acoustic Wave) and BAW (Bulk Acoustic Wave) filters, optical modulators, frequency control devices, medical imaging systems, and scintillation detectors. The company provides both standard specification wafers and custom fabrication services for specialized crystal material requirements.

## Home
- [Home](https://www.csimc-freqcontrol.com): CSIMC Frequency Control is a functional crystal and wafer supplier for the global electronics and photonics industries. The company manufactures and supplies lithium niobate (LiNbO3) wafers, lithium tantalate wafers, crystal quartz blanks, optical glass wafers, and specialty sensor crystals. CSIMC's materials serve SAW/BAW filter manufacturing, optical communication, RF electronics, medical imaging, and defense electronics applications worldwide. The company operates as a subsidiary of CQT Group (Canton Quantum Technology Group), combining crystal growth, wafer processing, and custom fabrication capabilities to serve both standard catalog and specialized custom material requirements.

## About Us
- [About Us](https://www.csimc-freqcontrol.com/about-us/): CSIMC Functional Crystals Co., Ltd. operates as a functional crystal material specialist with in-house crystal growth, wafer processing, and quality testing capabilities. The company's products are developed and manufactured to meet the demanding specifications of the semiconductor, photonics, and advanced electronics industries.
- [Company Profile](https://www.csimc-freqcontrol.com/company-profile/): CSIMC develops and manufactures functional crystal materials for precision electronics and optical applications. The company's engineering and manufacturing capabilities span crystal growth, cutting, grinding, polishing, and surface preparation processes.
- [Company Vision](https://www.csimc-freqcontrol.com/company-vision/): CSIMC's vision focuses on advancing functional crystal material technology to serve emerging applications in 5G communications, photonics integration, quantum technology, and medical electronics.
- [Company Culture and Logo](https://www.csimc-freqcontrol.com/about-us/company-culture-and-logo/): CSIMC operates as part of CQT Group, maintaining quality-driven manufacturing culture focused on precision crystal material production.
- [Our Organization](https://www.csimc-freqcontrol.com/our-organization/): CSIMC's organizational structure supports integrated operations from crystal growth through wafer fabrication and customer delivery.
- [Our Certificates](https://www.csimc-freqcontrol.com/our-certificates/): CSIMC maintains relevant quality and manufacturing certifications supporting semiconductor and electronics industry supply chain requirements.
- [Quality](https://www.csimc-freqcontrol.com/about-us/quality/): Quality management covers crystal growth process control, wafer dimensional verification, surface quality inspection, and flatness measurement. Individual wafer inspection reports available for critical applications.

## Products
- [Products](https://www.csimc-freqcontrol.com/products/): CSIMC manufactures and supplies a comprehensive range of functional crystal and wafer products for electronics, photonics, and sensor applications. Products are available in standard specifications and custom dimensions to meet specific device manufacturing requirements.
- [Lithium Niobate (LiNbO3) Wafers](https://www.csimc-freqcontrol.com/LiNbO3-Optical-Grade/optical-grade-lithium-niobate-wafers.html): Complete lithium niobate wafer product line covering optical grade, SAW grade, stoichiometric, and doped variants.
- [Optical Grade Lithium Niobate Wafers](https://www.csimc-freqcontrol.com/LiNbO3-Optical-Grade/optical-grade-lithium-niobate-wafers.html): Optical grade LiNbO3 wafers for electro-optic modulators, optical switches, and photonic integrated circuits. Ultra-low waveguide propagation loss and excellent electro-optic coefficients make lithium niobate the premier material for high-speed optical modulation. Available in various diameters, orientations (X-cut, Y-cut, Z-cut), and surface finishes for specific optical device requirements.
- [SAW Grade Lithium Niobate Wafers](https://www.csimc-freqcontrol.com/LiNbO3-SAW-Grade/saw-grade-lithium-niobate-wafers.html): SAW grade LiNbO3 wafers for Surface Acoustic Wave (SAW) filter and resonator manufacturing. SAW grade wafers are optimized for piezoelectric coupling coefficient and temperature stability for RF filter applications in smartphones, RF modules, and wireless communication equipment. Available in 3-inch, 4-inch, and 6-inch diameters with standard and custom orientations.
- [Stoichiometric Lithium Niobate (SLN)](https://www.csimc-freqcontrol.com/Stoichiometric-Lithium-Niobate/Stoichiometric Lithium Niobate.html): Stoichiometric lithium niobate wafers with near-stoichiometric composition offering superior properties compared to congruent lithium niobate including higher Curie temperature, narrower phase transition range, and improved electro-optic performance. Used in advanced optical modulators and nonlinear optical applications.
- [Lithium Niobate on Insulator (LNOI) Substrates](https://www.csimc-freqcontrol.com/LNOI/lithium-niobate-on-insulator-substrates-lnoi2.html): LNOI substrates consisting of lithium niobate thin film on insulator (SiO2/Si) structure for photonic integrated circuits. Thin-film lithium niobate on insulator technology enables high-performance, low-loss photonic devices with enhanced electro-optic and nonlinear optical properties. Used in high-speed electro-optic modulators, frequency combs, and quantum photonic circuits.
- [Black Lithium Niobate Wafer](https://www.csimc-freqcontrol.com/Black-Lithium-Niobate/black-lithium-niobate-wafer.html): Black lithium niobate wafers with reduced optical transparency for SAW filter applications requiring specific optical properties. Black LiNbO3 offers improved SAW device performance in certain configurations.
- [MgO doped Lithium Niobate Wafer](https://www.csimc-freqcontrol.com/MgO-doped-Lithium-Niobate/mgo-doped-lithium-niobate-wafer.html): Magnesium-doped lithium niobate wafers with MgO concentration for enhanced photorefractive damage resistance. MgO:LiNbO3 maintains high electro-optic coefficients while significantly improving resistance to optical damage from high-power laser applications. Used in laser Q-switching, nonlinear optical frequency conversion, and high-power optical modulator applications.
- [Lithium Tantalate (LiTaO3) Wafers](https://www.csimc-freqcontrol.com/liTaO3-wafers/): Lithium tantalate wafer products including optical grade, SAW grade, Fe-doped, and black variants.
- [Fe doped Lithium Tantalate Wafers](https://www.csimc-freqcontrol.com/fe-doped-liTaO3-wafer/fe-doped-lt-wafers.html): Iron-doped lithium tantalate wafers for pyroelectric infrared detector applications. Fe:LiTaO3 combines excellent pyroelectric properties with good mechanical and chemical stability for IR detection in security, automotive, and environmental monitoring applications.
- [Optical Grade Lithium Tantalate Wafers](https://www.csimc-freqcontrol.com/optical-grade-liTaO3-wafer/optical-grade-lithium-tantalate-wafers.html): Optical grade LiTaO3 wafers for electro-optic and nonlinear optical applications requiring lower dielectric constant and higher pyroelectric coefficients than lithium niobate.
- [SAW Grade Lithium Tantalate Wafers](https://www.csimc-freqcontrol.com/saw-grade-liTaO3-wafer/saw-grade-lithium-tantalate-wafers.html): SAW grade LiTaO3 wafers for RF filter and resonator applications. Lithium tantalate offers better temperature stability than lithium niobate for certain SAW device configurations. Used in high-frequency RF filters for mobile communications and wireless modules.
- [Black Lithium Tantalate](https://www.csimc-freqcontrol.com/Black-Lithium-Tantalate/black-lithium-tantalate.html): Black lithium tantalate wafers for specialized SAW and pyroelectric applications.
- [Crystal Quartz Blanks](https://www.csimc-freqcontrol.com/quartz-blanks/quartz-blanks.html): Crystal quartz blanks for frequency control, optical, and sensor applications.
- [Quartz Blanks](https://www.csimc-freqcontrol.com/quartz-blanks/quartz-blanks.html): AT-cut, BT-cut, and other orientation quartz crystal blanks for manufacturing quartz crystals, oscillators, and resonators. Used in frequency control devices for communications, computing, and timing applications. Available in multiple sizes and orientations for different crystal manufacturing requirements.
- [Quartz Materials](https://www.csimc-freqcontrol.com/quartz-materials/quartz-materials.html): Raw and processed quartz material for crystal growing, optical applications, and industrial uses.
- [Single Crystal Quartz Wafers](https://www.csimc-freqcontrol.com/Quartz-Wafer/single-crystal-quartz-wafers.html): Single crystal quartz wafers for optical and semiconductor applications requiring high-purity synthetic quartz substrates.
- [Optical Grade Quartz Wafers](https://www.csimc-freqcontrol.com/Optical-Grade-Quartz-Wafers/optical-grade-quartz-wafers.html): Optical grade synthetic quartz wafers for optical applications including UV optics, photomasks, and precision optical components.
- [Glass Substrates](https://www.csimc-freqcontrol.com/products/): Optical glass wafers for semiconductor, photonics, and precision optics applications.
- [Fused Silica Wafers](https://www.csimc-freqcontrol.com/fused-silica/fused-silica-wafers.html): High-purity fused silica wafers for semiconductor processing, optical applications, and precision instrumentation. Features ultra-low thermal expansion, excellent optical transmission across UV to IR, and superior chemical purity.
- [Fused Quartz Wafers](https://www.csimc-freqcontrol.com/Fused-Quartz/225.html): Fused quartz wafers for high-temperature applications and optical uses requiring excellent thermal shock resistance.
- [Corning 7980 Wafers](https://www.csimc-freqcontrol.com/Corning-7980/226.html): Corning 7980 (Fused Silica) glass wafers for semiconductor, display, and precision optical applications.
- [OHARA SK1300 Wafers](https://www.csimc-freqcontrol.com/OHARA-SK1300/227.html): OHARA SK1300 optical glass wafers for precision optics and imaging applications requiring specific optical dispersion properties.
- [Schott Borofloat 33 Wafers](https://www.csimc-freqcontrol.com/Schott-Borofloat-33/228.html): Borofloat 33 glass wafers for semiconductor, MEMS, and optical applications. Borofloat offers excellent thermal stability and optical quality at cost-effective pricing.
- [Sensor Crystals](https://www.csimc-freqcontrol.com/products/): Specialty crystals for sensor and transducer applications.
- [Bio Sensor](https://www.csimc-freqcontrol.com/bio-sensor/bio-sensor.html): Functional crystals for biosensor applications including piezoelectric materials for biosensing platforms and optical crystals for fluorescence detection.
- [Force Transducer](https://www.csimc-freqcontrol.com/force-transducer/force-transducer.html): Piezoelectric crystals for force transducers and pressure sensors in industrial measurement, automotive, and medical device applications.
- [Monitor Crystal](https://www.csimc-freqcontrol.com/monitor-crystal/monitor-crystal.html): Piezoelectric monitor crystals for thin film deposition monitoring and crystal oscillator applications.
- [Scintillation Crystals](https://www.csimc-freqcontrol.com/products/): Scintillation crystals for radiation detection and medical imaging.
- [TeO2 (Tellurium Oxide)](https://www.csimc-freqcontrol.com/tellurium-oxide-teo2/tellurium-oxide-teo2.html): Tellurium dioxide single crystals for acousto-optic devices, optical modulators, and radiation detection applications.
- [LYSO (Lutetium Yttrium Oxyorthosilicate)](https://www.csimc-freqcontrol.com/yttrium-silicate-lutetium-lyso/yttrium-silicate-lutetiume-lyso.html): LYSO scintillation crystals for medical imaging (PET scanners), high-energy physics, and radiation detection. High density, fast decay time, and superior stopping power make LYSO the preferred scintillator for modern PET imaging systems.
- [Thermoluminescent Dosimeter LiF (Mg,Cu,P)](https://www.csimc-freqcontrol.com/): Lithium fluoride thermoluminescent dosimeter crystals for radiation dose measurement in medical, environmental, and personal dosimetry applications. LiF:Mg,Cu,P offers near-tissue-equivalent response and excellent dose linearity.

## Application
- [Application](https://www.csimc-freqcontrol.com/products/): CSIMC's crystal and wafer products serve RF filter, photonics, medical imaging, optical communication, and sensor applications across the global electronics and advanced materials industries.
- [SAW/BAW Filters](https://www.csimc-freqcontrol.com/products/): SAW grade lithium niobate and lithium tantalate wafers for manufacturing RF filters in smartphones, RF front-end modules, and wireless communication infrastructure. 5G mobile communication drives increased demand for high-frequency SAW and BAW filters using CSIMC's crystal wafers.
- [Photonics & Optical Communication](https://www.csimc-freqcontrol.com/products/): Optical grade lithium niobate and thin-film LNOI for electro-optic modulators in optical fiber communication systems. Thin-film lithium niobate on insulator technology enables high-speed, low-loss optical modulators for data center interconnects and telecom transmission systems.
- [RF Electronics](https://www.csimc-freqcontrol.com/products/): Piezoelectric crystals for RF oscillators, filters, and resonators in communications, radar, and electronic warfare systems.
- [Medical Imaging](https://www.csimc-freqcontrol.com/products/): LYSO scintillation crystals for PET (Positron Emission Tomography) medical imaging systems. Thermoluminescent dosimeters for radiation dose measurement in medical treatment planning and personnel monitoring.
- [Defense Electronics](https://www.csimc-freqcontrol.com/products/): Piezoelectric and scintillation crystals for defense and security applications including radar systems, electronic warfare, and radiation detection equipment.

## Service
- [Service](https://www.csimc-freqcontrol.com/custom-fabrication/): CSIMC provides crystal wafer supply, custom fabrication services, and technical consultation for functional crystal material requirements.
- [Custom Fabrication](https://www.csimc-freqcontrol.com/custom-fabrication/): Custom wafer fabrication services including non-standard diameters, custom orientations, special surface preparations, and unique thickness specifications. Engineering team works with customer device requirements to develop optimal crystal material configurations.
- [Material Consultation](https://www.csimc-freqcontrol.com/material-care/): Technical consultation for crystal material selection, handling, storage, and processing. Guidance on material properties, compatibility with device manufacturing processes, and quality verification procedures.
- [Quality & Testing](https://www.csimc-freqcontrol.com/about-us/quality/): Quality inspection covers crystal orientation verification, dimensional measurement, surface defect inspection, and flatness/warpage measurement. Individual wafer inspection reports and certificate of conformance provided for critical applications.
- [Technical Properties](https://www.csimc-freqcontrol.com/technical-properties/): Comprehensive technical data on crystal material properties including physical constants, optical properties, piezoelectric coefficients, thermal properties, and processing guidelines.

## Contact Us
- [Contact Us](https://www.csimc-freqcontrol.com/contact-us/): CSIMC Frequency Control welcomes inquiries from SAW/BAW filter manufacturers, photonics device companies, medical imaging system builders, and electronics material distributors worldwide.
- Request Quotation: Detailed quotations for crystal wafers including grade, orientation, diameter, thickness, surface specification, and quantity. Custom wafer quotations provided based on customer device requirements.
- Custom Development: Engineering consultation for custom crystal material development and specialized wafer fabrication requirements. Technical collaboration for new device development and material qualification.
- Distribution Cooperation: International distribution partnerships available for qualified electronics material distributors. Technical support, product training, and marketing support provided for authorized CSIMC distributors.

## News
- [News](https://www.csimc-freqcontrol.com/news/): CSIMC publishes company announcements, product updates, and technology developments covering functional crystal materials and their applications in electronics and photonics industries.

## FAQ
- [FAQ](https://www.csimc-freqcontrol.com/): CSIMC addresses common questions about crystal material selection, wafer specifications, surface finishes, and custom fabrication for electronics and photonics material buyers.
- What wafer diameters are available? Standard diameters include 2-inch, 3-inch, 4-inch, and 6-inch for lithium niobate and lithium tantalate wafers. Custom diameters available for specialized applications. Glass substrate wafers available in multiple standard sizes including 4-inch, 6-inch, and 8-inch.
- What crystal orientations are available? Standard orientations include X-cut, Y-cut, Z-cut, and rotated cuts for both lithium niobate and lithium tantalate. Custom orientations available for specialized SAW and optical device requirements.
- What surface finishes are available? Surface finish options include single-side polished (SSP), double-side polished (DSP), and lapped surfaces. Polish quality grades vary by application requirement from standard semiconductor-grade to premium optical-grade surface quality.
- Do you provide thin-film lithium niobate on insulator (LNOI)? Yes. CSIMC supplies LNOI substrates with lithium niobate thin film on SiO2/Si for photonic integrated circuit applications. Standard and custom LNOI configurations available including film thickness and device layer specifications.
- Can you provide custom wafer sizes or orientations? Yes. Custom fabrication services support non-standard diameters, custom orientations, special thickness specifications, and unique surface preparation requirements. Engineering consultation determines feasibility and specifications for custom wafer requests.
- What quality documentation is provided? Individual wafer inspection reports with dimensional verification, surface quality grade, and flatness measurements provided for standard products. Certificate of conformance and material test reports available for quality-critical applications including medical and defense.
- What is the typical delivery time? Standard catalog wafers ship within established lead times. Custom wafers and large-quantity orders require additional fabrication time typically discussed during the quotation process.
- What packaging is used for wafer shipments? Wafers are shipped in standard semiconductor industry packaging including gel-pack containers, wafer boxes, and anti-static packaging materials. Special packaging requirements can be accommodated for specific customer requirements.