The OEM factory of NEXTECK in Japan has 60 years experience in crystal manufacture and market share up to 70% in Japan.
NEXTECK started to develop Taiwan market from 2009 and held some market share initially due to reliable quality , durability and competitive price. Welcome coating film production and processing factory to contact with us about business.
The crystal frequencies of NEXTECK include 5MHz and 6MHz, suitable for most evaporation controlled monitor in the market, including Inficon,Balzers,Temescal and Ulvac etc. NEXTECK can provide electrodes made of gold,silver or aluminium according to customers’ request.
Specfication
| Cycle | 5MHz（Primary Wave） | 6MHz（Primary Wave） | Electrode Material | Gold or silver ( Core: chromium ) |
| Diameter of Crystal Board | Φ12.4(+0.05, -0.10) | Φ14.0(±0.02) | Crystal Board Shape | Convex disk type (sidepiece: sphere) |
| Crystal Cutting Angle | 3° 03′±2 | Surface coarseness | #1000 | |
| Contact Position | Electrode part | Crystal Cutting Direction | AT-cut，frequency does not vary with temperature | |
Property
| Cycle | 5MHz（Primary Wave） | 6MHz（Primary Wave） |
| Dynamic resistivity | < 25Ω | |
| Cycle Temperature Characteristics | 25℃～80℃ 0～-4ppm | |
| Approx 55℃ cycle offset error of temperature coefficient: 4ppm±1ppm, cycle vary around 20Hz±5Hz,approx. 0.67Hz/℃) | ||
| Contact Resistance Value | Above 500MΩ（DC100V±15V） | |
| Principal oscillation, secondary undulation | The attenuation of secondary undulation is 2.5db above than principal oscillation. | |
Appearance and package
| Appearance | without abnormal object, no no scar and no pollution | |
| Package | 5pcs/box，10pcs/box，50pcs/box according to application. | |
The physical property of piezoid QI8010
Sensor material: monocrystal,quartz
Crystal cutting angle 1 35°15′（AT）
Outline 3 dioptric plano-convex
Surface fineness 10μ
Diameter: 0.550 inch (13.97 millimeter)
Electrode: gold / chromium
Electrical character
Oscillation cycle (MHz): 5.975 - 5.993 5.975 - 5.995
Oscillation resistance < 15ohm, 10-20ohm
Contact resistance<2 0ohm, 10-30ohm
1. Crystal cutting angles are changed as the function of outline. The real angle of the crystal is 35°16′.
2. NEXTECK can provide histogram of batch tests according to requirements.
Note: Strict inspections are carried out to guarantee the manufacture of high quality crystals for our end users.
Besides electrical and physical parameters, motional capacity and inductance, spurious resonance separation and static capacity
are measured to trace the quality and slight change in the manufacture of the crystals.
We have developed a crystal alloy, stress relieved and with longer life-span, to enhance the deposition process of dielectric and high stress materials.
Crystal alloy adopt the same raw materials as crystal bullion.
No.8 technical bulletin
Specification of crystal alloy that stress relieved and with longer life-span
A) The physical property of piezoid QI8010
Sensor material: monocrystal,quartz
Crystal cutting angle 1 35°15′（AT）
Outline 3 dioptric plano-convex
Surface fineness 10μ
Diameter: 0.550 inch (13.97 millimeter)
Electrode: gold / chromium
B) Electrical character 2
Oscillation cycle (MHz): 5.975-5.993
Oscillation resistance < 15ohm
Contact resistance < 15ohm
1. Crystal cutting angles are changed as the function of outline. The real angle of the crystal is 35°16′.
2. The electrical characters of Inficon crystal is confirmed by 100pcs samples, strict inspections are carried out.
NEXTECK can provide histogram of batch tests according to requirements.
Note: Strict inspections are carried out to guarantee the manufacture of high quality crystals for our end users.
Besides electrical and physical parameters, motional capacity and inductance, spurious resonance separation and static capacity
are measured to trace the quality and slight change in the manufacture of the crystals.
pecification of crystal alloy that stress relieved and with longer life-span
A) The physical property of piezoid QI8010
Sensor material: monocrystal,quartz
Crystal cutting angle 1 35°15′（AT）
Outline 3 dioptric plano-convex
Surface fineness 10μ
Diameter: 0.550 inch (13.97 millimeter)
Electrode: gold / chromium
B) Electrical character 2
Oscillation cycle (MHz): 5.975-5.993
Oscillation resistance < 15ohm
Contact resistance < 15ohm
1. Crystal cutting angles are changed as the function of outline. The real angle of the crystal is 35°16′.
2. The electrical characters of Inficon crystal is confirmed by 100pcs samples, strict inspections are carried out. NEXTECK can provide histogram of batch tests according to requirements.
Note: Strict inspections are carried out to guarantee the manufacture of high quality crystals for our end users. Besides electrical and physical parameters, motional capacity and inductance, spurious resonance separation and static capacity are measured to trace the quality and slight change in the manufacture of the crystals.
Influence of electrode metal on the performance of quartz crystal sensor
The type of metal used in contact electrodes has a significant effect on the ability of quartz crystals to measure film thickness. Therefore, three standard crystalline coatings are available: gold, alloy and silver.
Gold is a kind of popular electrode material. It has the characteristics of low contact resistance, high chemical stability and good deposition performance.
Gold crystal is typically used for metal deposit of low stress, such as gold, silver and / or copper.
When gold is used, frequency deviation is up to 1 MHz and adverse effect does not take place. But the electrode of gold is extremely stiff. Stress is passed to quartz from deposited film. The transformed stress might result in frequency jumping and crystal unstability.
Aerdentalloy are the best electrode for the material deposition of high stress, including SiO,SiO2,MgF2 and TiO2.沉积的高应力材料经常由于高张力或压应力而造成不稳定的晶体性能, which cause the bending of quartz and frequency deviation.
The stress of deposited film of alloy are dissipated by plastic yielding or plastic flow. Long before crystal bending under stress or tension, electrode is surrendered and dissipate stress , which helps to form stable crystal of longer stable period and no jump oscillation. Tests in the lab are approved that the lifespan of crystals raise 400% when SIO2 is deposited.
Silver is a kind of comprehensive and excellent electrode material. The contact resistance of silver is low. There is certain extend of plastic yielding. However, silver is easy to lost lustre in the atmosphere with sulfide, which will lead to the increase of contact resistance and decrease film adhesion of deposition in crystal.
Regarding the storage life of quartz crystal sensors and environment of store quartz crystals, we recommend to follow the below principles. Storage life means devices are stored safely and don’t suffer.
Quartz crystal is the device of surface activity and based on frequency.英晶体的保存期限通常适用于其电极化学成分和谐振频率中的任何变化. Therefore, the storage environment of crystal decide the storage life of sensor.Follow below rules,quartz crystal almost can be stored indefinitely according to the selection of electrode material.Gold crystalQI8010 is the most stable one due to the inertia of gold electrode.
QI8008 and QI8009 are a little more sensitive to chemical contact and temperature because of the adopted alloy and silver electrode adopted respectively.
Temperature: standard indoor temperature between 20-24℃
Humidity: standard indoor temperature between 40%-60%
Chemical contact: do not store crystal in the place with volatile materials, oils, sulfur, halides, ozone, iodine, and oxidant.
Particle contact: do not store crystal in the place full of atoms.Otherwise, properly sealed containers are necessary.
Mechanical contact: do not store crystal in the place with excessive mechanical vibration .
NEXTECK provides completed evaporation materials for resistances and electron beams .The materials can be manufactured to variety shapes and specifications , including strip, wire, rod, pellet and pieces etc. NEXTECK not only provides standard metal evaporation materials, but also make composite materials, hot pressed ceramics for alloys and vaccum casting materials.
