AT Cut Quartz Blanks Low Temperature Etching 0.5MHz - 70MHz
AT Cut Quartz Blanks Operating In Wide Temperature Range
AT cut is the most common cut, developed in 1934. The plate contains the crystal's x axis and is inclined by 35°15' from the z (optic) axis. The frequency-temperature curve is a sine-shaped curve with inflection point at around 25–35 °C. Has frequency constant 1.661 MHz⋅mm.[48] Most (estimated over 90%) of all crystals are this variant. Used for oscillators operating in wider temperature range, for range of 0.5 to 200 MHz; also used in oven-controlled oscillators.[49] Sensitive to mechanical stresses, whether caused by external forces or by temperature gradients.
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Orientation |
AT-Cut, etc |
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Angle Tolerance |
Theta Angle: ±5″, ±10″, ±15″, ±30″, ±1′, ±2′, …, etc. |
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Phi Angle: ±5′, ±10′, ±15′, ±30′, …, etc. |
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Size |
Round (3.0mm～8”)/ Square (1.6x1.6mm～48x48mm or larger)/ SMD (1.2x2.4mm Above) |
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Size Tolerance |
±0.01mm,+/-0.005mm, +/-0.0005mm, according to size |
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Frequency |
1 Mhz up to 54Mhz for AT-Cut Fundamental; Up to 70Mhz by Etching |
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Flat |
Per requested: the flat shall be perpendicular to X axis within ±10 deg |
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Surface |
#1000(9u); #2000(7u); #3000(5u); #4000(3u) (SiC); Polished(Cerium Oxide)& etched Std |
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Overtone |
Fundamental; Third Overtone (3rd); Fifth Overtone (5th) |
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Dioptric |
Plano-Convex: 0.5 dioptric～10 dioptric Bi-Convex: 10 dioptric～15 dioptric |
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Material |
Cultured Quartz Crystal |
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Q-Value |
Min 1.8x10^6, 2.4x10^6 to 3.0x10^6 IEC standards |
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ECD |
Max 2 /c㎡, 10/c㎡, Max 30/c㎡, Max 100/c㎡, Max 300/c㎡; Swept Quartz |
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Inclusions |
Ia, Ib, I, II, III Grades |
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Grade |
Z bar, Y bar, Or Swept quartz |
Acceptance Check
- The product is fragile. We have adequately packed it and labeled it fragile. We deliver through excellent domestic and international express companies to ensure transportation quality.
- After receiving the goods, please handle with care and check whether the outer carton is in good condition. Carefully open the outer carton and check whether the packing boxes are in alignment. Take a picture before you take them out.
- Please open the vacuum package in a clean room when the products are to be applied.
- If the products are found damaged during courier, please take a picture or record a video immediately. DO NOT take the damaged products out of the packaging box! Contact us immediately and we will solve the problem well.
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