IPC-A-600H-2010 中文版 印制板的可接受性 (1).pdf - 第138页
T arget Condition - Class 1,2,3 (⽬标条件 - 1,2,3级) • Hole exhibits only slight flare and does not violate minimum annular ring requirements. • 孔仅 呈 现 轻 微的 锥 口且未 违 反最 小环宽 要求。 Acceptable - Class 1,2,3 (可接受条件 - 1,2,3级) • Hole …

Target Condition - Class 1,2,3(⽬标条件 - 1,2,3级)
• Plating is smooth and uniform throughout the hole. No evidence
of roughness or nodules.
• 整个孔的镀层平滑而均匀。没有粗糙或结瘤迹象。
Acceptable - Class 1,2,3(可接受条件 - 1,2,3级)
• Roughness or nodules do not reduce plating thickness or hole
diameter below minimum requirements.
• 粗糙或结瘤没有使镀层厚度或孔径减小至低于最小要求。
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351a
图351b
图351c
3.5 PLATED-THROUGH HOLES – PUNCHED(镀覆孔 – 冲孔)
3.5.1 Roughness and Nodules(粗糙度和结瘤)
129IPC-A-600H-2010 2010年4月
Visual observations made on cross-sections only.(仅对显微切片进行目检观察。)

Target Condition - Class 1,2,3(⽬标条件 - 1,2,3级)
• Hole exhibits only slight flare and does not violate minimum
annular ring requirements.
• 孔仅呈现轻微的锥口且未违反最小环宽要求。
Acceptable - Class 1,2,3(可接受条件 - 1,2,3级)
• Hole exhibits flare but it does not violate minimum annular ring
requirements.
• 孔呈现锥口,但没有违反最小环宽要求。
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352a
图352b
图352c
3.5 PLATED-THROUGH HOLES – PUNCHED(镀覆孔 – 冲孔)
3.5.2 Flare(锥⼝)
130 IPC-A-600H-20102010年4月
Visual observations made on cross-sections only.(仅对显微切片进行目检观察。)

This section provides acceptability criteria for several special printed board types. The distinctive features of these special printed board types
require supplementing the general acceptability criteria. For each special printed board type, this section outlines where and how the general
acceptability criteria are supplemented. The special printed board types are:
• Flexible
• Rigid-Flex
• Metal Core
• Flush
本节为几种特殊类型的印制板提供了可接受性准则。这些特殊类型印制板的某些特性要求,在通用验收准则之外还需补充若干规
定。对于每种特殊类型板来说,本节指出在通用验收准则的何处及怎样作补充。这些特殊类型板是:
• 挠性板
• 刚挠性板
• 金属芯板
• 齐平板
4 MISCELLANEOUS(其他类型板)
Introduction(引⾔)
131IPC-A-600H-2010 2010年4月