Product type: Quartz Plate. Application: Glass. Model: Electronics grade quartz wafers.
Overview
Electronics Grade Quartz Wafers Substrate: a fused silica / quartz wafer made from Quartz Crystal. Listed geometry: diameter 25.4mm-200mm, thickness 0.10mm or More. Listed for Glass applications. Dimensions, material grade, coating and finish can be quoted to your drawing; the values above are the listed starting point.
Specifications
| Material | Quartz Crystal |
|---|---|
| Type | Quartz Plate |
| Diameter | 25.4mm-200mm |
| Thickness | 0.10mm or More |
| Application | Glass |
| Model NO. | Electronics grade quartz wafers |
| Ttv | <2um |
| Warp | <20um |
| Bow | <10um |
| Surface Finish | Ssp/DSP |
| Cutting Angle | X/Y/Z/At32,33,36/Bt/St42.75deg;-Cut |
| Supplier | Hangzhou Freq-Control Electronic Technology Ltd. |
Technical data
| Material | Quartz Crystal | |||
| Cutting Angle | X/Y/Z/AT32,33,36/BT/ST42.75°-cut etc | |||
| Diameter/size | 3"(76.2mm) | 4" (100mm) | 6"(150mm) | 8"(200mm) |
| Tol(±) | <0.20 mm | |||
| Thinnest Thickness | 0.08mm Min | 0.10mm Min | 0.20mm Min | 0.35mm or more |
| Primary Flat | 22mm | 32mm | 42.5mm | 57.5mm |
| LTV (5mmx5mm) | <1µm | |||
| TTV | <3µm | |||
| Bow | -30<bow<30 | |||
| Warp | <40µm | |||
| PLTV(<0.5um) | ≥95%(5mm*5mm) | |||
| Orientation Flat | All available | |||
| Surface Type | Single Side Polished /Double Sides Polished | |||
| Polished side Ra | <0.5nm | |||
| Back Side Criteria | General is 0.2-0.5µm or as customized | |||
| Edge Criteria | R=0.2mm or Bullnose | |||
| Material Property | ECD | Better than grade 4 | ||
| Inclusion | Better than grade II | |||
| Q-Value | Better than grade C | |||
| Wafer Surface Criteria | Particles ¢>0.3 µ m | <= 30 | ||
| Scratch , Chipping | None | |||
| Defect | No edge cracks, scratches, saw marks, stains | |||
| Packaging | Qty/Wafer box | 25pcs per box |
What to specify when you request a quote
- Diameter and flat / notch — listed as “25.4mm-200mm”; state diameter, flat or notch and their tolerances.
- Thickness and TTV — listed as “0.10mm or More”; give thickness, its tolerance and total thickness variation.
- Polish and roughness — listed as “Ssp/DSP”; specify single- or double-side polish and roughness.
- Flatness, bow and warp — listed as “<20um”; quote flatness, bow and warp limits.
- Material grade — listed as “Quartz Crystal”; name the grade (JGS1/JGS2, Borofloat 33, alkali-free, sapphire orientation).
Engineering guides for this part
For material grades and coating options, see Fused Silica and Quartz Glass: Selecting Materials for Precision Components. How parts like this are machined and finished is covered in Precision CNC Machining of Quartz & Fused Silica Components. For an application example, read Fused Silica Glass Wafers for Precision Appliance Electronics. Before sending a drawing, check Quartz Glass Manufacturing: Controlling Thermal Conductivity in Fused Silica. A related standard product is Fused Silica Glass Wafers (2–12", JGS1/JGS2).
