IPC-A-600H-2010 中文版 印制板的可接受性 (1).pdf - 第42页
T arget Condition - Class 1,2,3 (⽬标条件 - 1,2,3级) • No voids. • 无 空洞。 Acceptable - Class 3 (可接受条件 - 3级) • No more than one void in any hole. • Not more than 5% of the holes have voids. • The void is not more than 5% of the…

Target Condition - Class 1,2,3(⽬标条件 - 1,2,3级)
• No voids.
• 无空洞。
Acceptable - Class 3(可接受条件 - 3级)
• No evidence of voids in the hole.
• 孔内无空洞迹象。
Acceptable - Class 2(可接受条件 - 2级)
• No more than one void in any hole.
• Not more than 5% of the holes have voids.
• Any void is not more than 5% of the hole length.
• The void is less than 90° of the circumference.
• 任一孔内空洞数不多于1个。
• 含空洞的孔数不超过5%。
• 任一空洞的长度不大于其孔长的5%。
• 空洞小于圆周的90°。
Acceptable - Class 1(可接受条件 - 1级)
• No more than three voids in any hole.
• Not more than 10% of the holes have voids.
• Any void is not more than 10% of the hole length.
• All voids are less than 90° of the circumference.
• 任一孔内空洞数不多于3个。
• 含空洞的孔数不超过10%。
• 任一空洞长度不大于其孔长的10%。
• 所有的空洞均小于圆周的90°。
Nonconforming - Class 1,2,3(不符合条件 - 1,2,3级)
• Defects either do not meet or exceed above criteria.
• 缺陷不符合或超出上述要求。
图253a
图253b
图253c
图253d
2.5 HOLES – PLATED-THROUGH – GENERAL(镀覆孔 – 通则)
2.5.3 Voids – Copper Plating(铜镀层空洞)
33IPC-A-600H-2010 2010年4月

Target Condition - Class 1,2,3(⽬标条件 - 1,2,3级)
• No voids.
• 无空洞。
Acceptable - Class 3(可接受条件 - 3级)
• No more than one void in any hole.
• Not more than 5% of the holes have voids.
• The void is not more than 5% of the hole length.
• The void is less than 90° of the circumference.
• 任一孔内空洞数不多于1个。
• 含空洞的孔数不超过5%。
• 空洞长度不大于其孔长的5%。
• 空洞小于圆周的90°。
Acceptable - Class 2(可接受条件 - 2级)
• No more than three voids in any hole.
• Not more than 5% of the holes have voids.
• Any void is not more than 5% of the hole length.
• All voids are less than 90° of the circumference.
• 任一孔内空洞数不多于3个。
• 含空洞的孔数不超过5%。
• 任一空洞长度不大于其孔长的5%。
• 所有空洞小于圆周的90°。
Acceptable - Class 1(可接受条件 - 1级)
• No more than five voids in any hole.
• Not more than 15% of the holes have voids.
• Any void is not more than 10% of the hole length.
• All voids are less than 90° of the circumference.
• 任一孔内空洞不多于5个。
• 含空洞的孔数不超过15%。
• 空洞长度不大于其孔长的10%。
• 所有空洞小于圆周的90°。
Nonconforming - Class 1,2,3(不符合条件 - 1,2,3级)
• Defects either do not meet or exceed above criteria.
• 缺陷不符合或超出上述要求。
图254a
图254b
图254c
2.5 HOLES – PLATED-THROUGH – GENERAL(镀覆孔 – 通则)
2.5.4 Voids – Finished Coating(最终涂覆层空洞)
34 IPC-A-600H-20102010年4月

Target Condition/Acceptable - Class 1,2,3
(⽬标条件/可接受条件 - 1,2,3级)
• No lifting of lands.
• 无焊盘起翘。
Nonconforming - Class 1,2,3(不符合条件 - 1,2,3级)
• Defects either do not meet or exceed above criteria.
• 缺陷不符合或超出上述要求。
图255a
图255b
图255c
2.5 HOLES – PLATED-THROUGH – GENERAL(镀覆孔 – 通则)
2.5.5 Lifted Lands – (Visual)(焊盘起翘 –(⽬检))
35IPC-A-600H-2010 2010年4月