connector的平貼標準

connector主要的功能是來做連結，不像其他的零件，除了機構干涉以外，就沒有別的問題了。
所以connector的位置是很重要的。

以經驗來說，connector分對外與對內兩類。

對外
指的是機構件組裝完成後，讓外部的cable或是其他組件做插拔。
這一類的connector最好是不要有特殊的狀況。
雖然IPC中有說明可接受的狀況，但在備註中也特別說明不能有匹配性的問題。

對內
則是依照IPC的規則執行最好，沒有爭議。

如果是設計上的問題，當然另當別論。

IPC-A-610D
請參閱
7.1.8 Component Mounting – Connectors

Target - Class 1,2,3
• Connector is flush with board.
• Lead protrusion meets requirements.
• Board lock (if equipped) is fully inserted/snapped into the
board.

Acceptable - Class 1,2,3
• Back edge of connector is flush; entering edge of connector
does not violate component height or lead protrusion
requirements; see 7.4.3 or 7.5.3.
• Board lock is fully inserted/snapped through the board (nonfloating
housing.)
• Any tilt, provided:
• Minimum lead protrusion is met.
• Maximum height requirements are not exceeded.
• Mates correctly.

Defect - Class 1,2,3
• Will not mate when used in application due to angle.
• Component violates height requirements.
• Boardlock is not fully inserted/snapped into board.
• Lead protrusion does not meet acceptance requirements.
Note: Connectors need to meet form, fit and function requirements.
A trial mating of connector to connector or to assembly
may be required for final acceptance.

以上標準節錄 IPC-A-610D