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 …

100%1 / 180
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.
整个孔镀层平滑而均匀。没有粗糙瘤迹象。
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.
粗糙没有使镀层径减小至低于最要求。
Nonconforming - Class 1,2,3(不符合条件 - 1,2,3级)
Defects either do not meet or exceed above criteria.
缺陷不符合或出上述要求。
351a
351b
351c
3.5 PLATED-THROUGH HOLES – PUNCHED(镀覆孔 孔)
3.5.1 Roughness and Nodules粗糙度和结瘤)
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Visual observations made on cross-sections only.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.
孔仅微的口且未反最小环宽要求。
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.
,但没有反最小环宽要求。
Nonconforming - Class 1,2,3(不符合条件 - 1,2,3级)
Defects either do not meet or exceed above criteria.
缺陷不符合或出上述要求。
352a
352b
352c
3.5 PLATED-THROUGH HOLES – PUNCHED(镀覆孔 孔)
3.5.2 Flare⼝)
130 IPC-A-600H-201020104
Visual observations made on cross-sections only.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
本节为种特的印制板提供了可接受性准则。这些特印制板的某些特性要求,在通用验收准则之外需补充
定。对于每种特说,本节指出在通用验收准则的处及样作补充。这些特板是:
性板
性板
齐平
4 MISCELLANEOUS(其他类型板)
Introduction(引⾔)
131IPC-A-600H-2010 20104