Quartz Crystal Wafers/Rings/Blanks

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

Angle Tolerance(±) 

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

Phi Angle:   ±5′, ±10′, ±15′, ±30′, …, etc.

Size   

Round (3.0mm～8”)/ Square   (1.6x1.6mm～48x48mm 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 dioptric～10 dioptric  Bi-Convex:   10 dioptric～15 dioptric

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)

<1.5µm

TTV

<1.5~3   µm

Bow

-30

Warp

<40µm

Surface Type

SSP   / DSP

Edge Criteria

R=0.2mm   or Bullnose

Polished   side Ra

<0.5nm or per   requested

Back   Side Criteria

General is 0.2-0.5µm or   as customized