弧长差
Arc length difference
≤0.5mm
四角同心度
Concentricity
≤0.5mm
*圆棒晶棒长度 Ingot length
70%≥1200mm
70%≥1000mm
70%≥ 800mm
90%≥300mm，all≥200mm
*端面垂直度Verticality between body and terminals
90
o
±0.3
o
当发货的晶棒去头尾时要求 In case cut off top and tail before delivery