Following from the EMPF HelpLine; prepared by IPC-A-610B Master Instructor
Linda Zellars:

"J-STD-610 says:  Nonconforming Process Indicator - Class 1,2,3 for
Blowholes, pinholes, and voids providing the solder connection meets the
requirtements of 4-1.  Table 4-1 states that Class 2 and three have 75% hole
fill.  If you can demonstrate that the solder fills at least 75% of the hole
then you have a process indicator.  If not you have a defect."

If you would like to discuss this a bit to raise your comfort level of
understanding, please feel free to contact us directly.

******************************
>
>>>Date: Sun, 2 Feb 1997 19:33:50 -0800
>>>From: [log in to unmask] (Thomas D. Langlois)
>>>Subject: Pinholes - 610B vs. J-STD-001B
>>>
>>>I could use some opinions. Both IPC-A-610B & J-STD-001B clearly define
>>>minimum amounts of solder in a PTH. What about pinholes ? 610 addresses
>>>them, but not clearly, and I can't find reference to them in J-STD.
>>>Thanks.
>>>
>>>Tom Langlois
>>>Quality Trainer
>>>Hadco Corp. - VAM Division
>>>

***ALL NEW EMPF PHONE NUMBERS***

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****NEW--317.655.3688
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Indianapolis IN  46202-3112
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