Material

Piezo   / Optical grade   

Q-Value 

Min 1.8x10^6, 2.4x10^6 to   3.0x10^6    IEC standards

ECD 

Max 2 /c, 10/c, Max 30/c,  Max 100/c, Max   300/c;  Swept   Quartz

Inclusions Density 

Ia, Ib, I, II, III Grades

Swept 

both Pure Z and Y Bar   available, with or without Swept quartz

Cuts   Type (orientation) 

X,   Y, Z, at, BT, CT, ET,DT, GT, NT, FC, SC, IT, AC, BC, ST, TS  MT,NT RT, LC, etc 

Angle Tolerance(±) 

Theta Angle: ±5, ±10, ±15,   ±30, ±1, ±2,, etc.

Phi Angle:   ±5, ±10, ±15, ±30,, etc.

Size   

Round (3.0mm8" )/ Square   (1.6x1.6mm48x48mm or larger)/ SMD (1.2x2.4mm above)

Size   Tolerance(±) 

±0.01mm,+/-0.005mm,   +/-0.0005mm, according to size

Frequency/   Thickness 

1 Mhz up to 54Mhz for   at-Cut Fundamental; up to 70Mhz by Etching 

Flat   

Per   requested: the flat shall be perpendicular to X axis within ±10 deg 

Surface   Finishing 

#1000(9u); #2000(7u);   #3000(5u); #4000(3u) (Sic); Polished(Cerium oxide)&   etched  Std 

Overtone 

Fundamental;   Third Overtone (3rd); Fifth Overtone (5th)

Contouring   (dioptric) 

Plano-Convex :   0.5 dioptric10 dioptric  Bi-Convex:   10 dioptric15 dioptric

Diameter 

3" (76.2mm)

4" (100mm)

6" (150mm)

8" (200mm)

Thickness 

0.08mm Min-up

0.10mm   Min-up

0.20mm Min -up

0.35mm   Min-

Primary   Flat 

22mm

32mm

42.5mm

57.5mm   or notch

Surface 

LTV (5mmx5mm)

<1.5m

TTV

<1.5~3   m

Bow

-30<bow<30

Warp

<40m

Surface Type

SSP   / DSP

Edge Criteria

R=0.2mm   or Bullnose

Polished   side Ra

<0.5nm or per   requested

Back   Side Criteria

General is 0.2-0.5m or   as customized