Stella,

Look at IPC-A-610B paragraph 4.1 Acceptability Requirements (cont.) page
53.

David N. Girard, CQE, NCE
Product Assurance Engineer
Group Technologies Corp.

> ----------
> From:         [log in to unmask][SMTP:[log in to unmask]]
> Sent:         Thursday, February 26, 1998 15:50
> To:   [log in to unmask]
> Subject:      [TN] Solder balls spec
>
> Dear colleagues:
> Sorry, but I have to return to the solder balls spec. issue.
> I know, that   IPC-S-815B ( 3.6.6) had the criteria for the solder
> balls  (
> less than 0.005", no more than 5 per one sq. inch).
>
> Now, IPC-S-815 was replaced  by J-STD-001.  But , I can not find any
> solder
> balls spec in J -STD.
>
> We are NoClean chemistry users, and will always have tiny  solder
> balls,
> although we are trying to reduce its number.
>
> I need an official document to accept presence of the solder balls up
> to
> the certain level, of course.
> Please, help!!
> Stella Neyman
> Eaton Co.
> 248-608-7289
> E-mail:  [log in to unmask]
>
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