Krystaly, Hradec Králové, a.s.
 
Special substrates image

Special substrates

Besides standard wafers and blanks we produce special substrates based on customer's requests. Below are a few examples of these substrates. In case of other requirements, feel free to contact us.



1) Rectangular blanks / wafers

Parameter, orientation Value
 Material quartz, Q > 1.8 mil.
 Cutting angle 43.75° (± 10')
 Dimensions 50.80 x 12.80 (± 0.13) [mm]
 Thickness 965 (± 76) [μm]
 Front side polished SAW, RMS < 0.5 μm
 Back side fine lapped, Ra ~ 0.2 μm



2) Rings

Parameter, orientation Value
 Material quartz, Q > 1.8 mil.
 Cutting angle X90° (± 1°)
 Dimensions
( do / di / thickness )

1) 15.24 / 7.75 / 0.76 mm
2) 20.0 / 11.9 / 1.2 mm
3) 26.6 / 14.3 / 0.8 mm
4) 32.6 / 18.3 / 1.2 mm

 Front side lapped, Ra ~ 1 μm
 Back side lapped, Ra ~ 1 μm



3) Rectangular blanks 

Parameter, orientation Value
 Material quartz, Q > 1.8 mil.
 Cutting angle ZX 0° + 1°50' (± 15')
 Dimensions 38.10 x 38.10 (± 0.05) [mm]
 Thickness 400 (± 3) [μm]
 Front side fine lapped, Ra ~ 0.2 μm
 Back side fine lapped, Ra ~ 0.2 μm


Note:
All of the above parameters are only sample specifications.
Differences from standard values and other parameters can be consulted.

 
 
 

KRYSTALY 

Hradec Králové, a.s. 
Okružní 1144 
500 03 Hradec Králové 3 
Česká republika