Spacing of Adjacent Holes

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   IPC-2221A 9.2.7 states that the "residual laminate material" be no less than 0.50 mm (20mil).

This translates into hole to hole clearance, or hole to hole spacing.

I don't have access to IPC-2221B which is the current rev as of November 2012.

Can someone post whether the value has changed in IPC-2221B?

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Gary K Members Profile Send Private Message Find Members Posts Add to Buddy List New User Joined: 29 Mar 2012 Location: SC, USA Status: Offline Points: 2	Post Options Post Reply Quote Gary K Report Post Thanks(0) Quote Reply Topic: Spacing of Adjacent Holes Posted: 21 Dec 2016 at 12:08pm
	IPC-2221A 9.2.7 states that the "residual laminate material" be no less than 0.50 mm (20mil). This translates into hole to hole clearance, or hole to hole spacing. I don't have access to IPC-2221B which is the current rev as of November 2012. Can someone post whether the value has changed in IPC-2221B?



Matthew Lamkin Members Profile Send Private Message Find Members Posts Add to Buddy List Advanced User Joined: 02 Oct 2012 Status: Offline Points: 284	Post Options Post Reply Quote Matthew Lamkin Report Post Thanks(0) Quote Reply Posted: 06 Jan 2017 at 4:52am
	The values are the same in the rev B standard.