Materials Division
Testbourne LTD Instruments Division
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Quartz Sensor Crystals

THIN FILM


Features

  • 5 MHz
  • 6 MHz
  • Blank Crystals
  • Gold Coated
  • Silver Coated
  • Special Bonding Layer
  • Custom Frequency Bands
  • 100% Inspection
  • Just-In-Time Service

Typical Applications

  • Research and Production
  • DC & RF Sputtering
  • Thermal Evaporation
  • Ion Plating
  • Anti-Corrosive Coatings
  • Catalytic Materials
  • Compact Discs
  • Hard Coatings
  • Magnetic Media
  • Metals & Alloys
  • Optics & Opthalmics
  • Optoelectronics
  • Resistors
  • Semiconductors
  • Superconductors

PRECISION QUARTZ CRYSTALS



Precision quartz crystals

Quality Crystals
Thin film measurement accuracy and crystal life are a function of Sensor Crystal Quality. To assure that each crystal is optimised for maximum process yields and minimum downtime 100% inspection is employed. Every crystal is inspected from the Quartz Blank stage, right through to the last coating process and final frequency selection.

Certificate of Conformity
The strict Quality Control with traceable batch number records ensures that each package of crystals can be covered by a Certificate of Conformity.

Crystal Characteristics
Our standard crystals are 0.55 inches or 0.49 inches in diameter and have electrodes configured with a gold or silver film deposited onto a special adhesion layer. The crystal blank contour is plano-convex for smooth frequency response over the crystal life and the crystal orientation is AT-cut for good frequency stability with temperature. These crystals will work very successfully with most thin film monitors and controllers.

Special Frequency Bands
Some multi-layer and other specialised thin film applications can be better served by the use of crystals which arc tuned to a very narrow frequency band. Similarly, certain controllers are also designed to operate with crystals of a selected frequency band. Testbourne will help users to select the correct crystal for their thin film controller or application.

Blank Crystals
Testbourne can supply the blank non-coated 5 MHz and 6 MHz crystals when requested. These can be a viable option for some crystal users.

Gold or Silver Coated?
Silver coated crystals may give longer life than gold coated crystals. Tests in an ion plating system where TiN and Al were deposited, showed a 50% longer life for the silver coated crystals. They have also performed well in DC and RF sputtering systems. However, silver coated crystals react to moisture, fluorides and sulphides for example. It may be worth testing the two types of crystals when commencing new thin film processes.

Custom "On - Hold" Service
As a specialised component and materials supplier, we provide a custom "On-Hold" service to support many laboratories and manufacturing companies. Our customer support department monitors customers' schedules and maintains back-up stocks of standard and non-standard crystals for each contacted user.

Sensor Heads
Crystal failures are quite often caused by-worn or damaged sensor heads, cables and accessories. We have a range of sensor heads and other components available to support our ex-stock crystal service. Data sheets are available detailing each item.

Gold recommended for low film stress deposition, such as Aluminium, Gold, Silver, etc.
Silver or Aluminium recommended for high film stress deposition, such as Chromium, Nickel, Inconel, etc.
Aluminium recommended for dielectric material deposition, such as Magnesium fluoride, Silicon monoxide, etc.
Inficon 6 MHz Sensor Crystals
Part NumberDetailsEnter Qty.
008-009-G10Silver electrode, in clean room compatible dispenser
008-010-G10Gold electrode, non-tarnishing, in clean room compatible dispenser
750-679-G1 Alloy electrode for high stress materials, in clean room compatible dispenser
SPC-1093-G10Gold electrode, in box
750-1014-G10Silver electrode, in box
750-1015-G10Alloy electrode, in box
750-1000-G10Gold electrode, in flat pack carousel
750-1001-G10Silver electrode, in flat pack carousel
750-1002-G10Alloy electrode, in flat pack carousel
Inficon 5 MHz Sensor Crystals
Part NumberDetailsEnter Qty.
750-225-G2Gold electrode, non-tarnishing, in clean room compatible dispenser
750-226-G2Silver electrode, in clean room compatible dispenser
750-678-G1Alloy electrode for high stress materials, in clean room compatible dispenser
750-1016-G10Gold electrode, in box
750-1017-G10Silver electrode, in box
750-1018-G10Alloy electrode, in box
750-1005-G10Gold electrode, in flat pack carousel
750-1006-G10Silver electrode, in flat pack carousel
750-1007-G10Alloy electrode, in flat pack carousel
Standard 0.550" Diameter Vacuum Crystals (Compatible with Maxtek, INFICON, Phelps, etc.) AT-Cut, Optimized for 70 °C
Part NumberFreq.Front Electrode Material Outer LayerRear Electrode Material Outer LayerConf. FrontConf. RearPack.Enter Qty.
103200-26MHzGoldGoldPlanoConvexBox of 5
1032026MHzSilverSilverPlanoConvexBox of 5
103206-XO35MHzGoldGoldPlanoConvexBox of 5
103207-XO5MHzSilverSilverPlanoConvexBox of 5
Q1-1000-C6MHzGoldGoldPlanoConvexCarousel of 10
103202-C6MHzSilverSilverPlanoConvexCarousel of 10
103206-XO3-C5MHzGoldGoldPlanoConvexCarousel of 10
103207-XO-C5MHzSilverSilverPlanoConvexCarousel of 10
1032395MHzAluminiumGoldPlanoConvexCarousel of 10
1032406MHzAluminiumGoldPlanoConvexCarousel of 10
Standard 0.550" Diameter Vacuum Crystals (Compatible with Balzers) AT-Cut, Optimized for 70°C
Part NumberFreq.Front Electrode Material Outer LayerRear Electrode Material Outer LayerConf. FrontConf. RearPack.Enter Qty.
1862035MHzGoldGoldPlanoConvexBox of 5
1862025MHzSilverSilverPlanoConvexBox of 5
1862015MHzGoldGoldPlanoConvexCarousel of 10
1862005MHzSilverSilverPlanoConvexCarousel of 10
Standard 0.490" Diameter Vacuum Crystals (Compatible with Ulvac & Sloan) AT-Cut, Optimized for 70°C
Part NumberFreq.Front Electrode Material Outer LayerRear Electrode Material Outer LayerConf. FrontConf. RearPack.Enter Qty.
1862035MHzGoldGoldPlanoConvexBox of 5
1862025MHzSilverSilverPlanoConvexBox of 5
1862015MHzGoldGoldPlanoConvexCarousel of 10
1862005MHzSilverSilverPlanoConvexCarousel of 10

RQCM SENSOR CRYSTALS

RQCM SENSOR CRYSTALSMaxtek's 1" Sensor Crystals include our unique wrap-around electrode design so that both electrode connections are made on the sealed side of the crystal allowing for use in conductive liquids. Use these crystals with any Maxtek crystal holder or cell for a rugged, easy to use and stable housing for QCM experiments in both liquid and gas phase.

The crystals are offered in either a low cost unpolished finish or a highly polished finish to reduce errors due to liquid trapping. Maxtek also offers AT cut crystals optimized for either 25oC or 90oC to minimize measurement errors due to temperature. Various electrode materials are available. Please contact us for any special crystal requirements.

Standard Sensor Crystals (90oC Cut)
Part NumberDescriptionEnter Qty.
149211-1Sensor Crystal, 5 MHz, Cr/Au, polished
149211-2Sensor Crystal, 5 MHz, Cr/Au, unpolished.
149238-1Sensor Crystal, 5 MHz, Ti/Au, polished
149238-2Sensor Crystal, 5 MHz, Ti/Au, unpolished
149240-1Sensor Crystal, 5 MHz, Ti/Pt, polished
149242-1Sensor Crystal, 5 MHz, Ti/Ag, polished
149243-1Sensor Crystal, 5 MHz, Ti/AI, polished
149270-1Sensor Crystal, 5 MHz, Ti/Au/Ti/Si, polished
Standard Sensor Crystals (25oC Cut)
Part NumberDescriptionEnter Qty.
149257-1Sensor Crystal, 5 MHz, Ti/Au, polished room temperature
149273-1Sensor Crystal, 5 MHz, Cr/Au, polished room temperature
149274-1Sensor Crystal, 5 MHz, Ti/Pt, polished room temperature
149275-1Sensor Crystal, 5 MHz, Ti/Ag, polished room temperature
149276-1Sensor Crystal, 5 MHz, Ti/AI, polished room temperature
149277-2Sensor Crystal, 5 MHz, Ti/Au/Ti/Si, polished room temperature
Special Sensor Crystals (90oC Cut)
Part NumberDescriptionEnter Qty.
149240-2Sensor Crystal, 5 MHz, Ti/Pt, unpolished
149241-1Sensor Crystal, 5 MHz, Cr/Pt, polished
149241-2Sensor Crystal, 5 MHz, Cr/Pt, unpolished
149248-1Sensor Crystal, 5 MHz, Ti, polished
149229-1Sensor Crystal, 5 MHz BT Cut, Cr/Au, polished
149240-2Sensor Crystal, 5 MHz, Ti/Pt, unpolished
149241-1Sensor Crystal, 5 MHz, Cr/Pt, polished
149241-2Sensor Crystal, 5 MHz, Cr/Pt, unpolished
149248-1Sensor Crystal, 5 MHz, Ti, polished

Selecting a Crystal
Generally, it will be possible to match one of the listed crystals with an equivalent crystal produced by another manufacturer. In fact we supply a number of special crystal variants with enhanced performance. These are always worth trying as they can offer process benefits and most probably, overall savings in cost.
Customer Service
If vou need assistance with selecting a crystal from the list, do call us. We will be pleased to give advice and provide a dedicated part number for the suggested standard crystal, or special crystal variant. Where appropriate, we will provide a sample box or carousel of crystals to test.


Unit 2, Hatch Industrial Park Greywell Road, Hatch Basingstoke Hampshire, RG24 7NG, England, UK.
High Purity Materials For Research, Development and Industry © 2014 Testbourne Limited
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