Hi, Steve!
I think that what Werner meant was the center of the hole, not of the PCB.
For your application- I would certainly take the risk, but I am not you, and I can't
give you any proven data about reliability in this case.
Best regards,
Gaby.
P.S. I asked some days ago a question about the reliability of press fit connectors in
ENIG plated holes. I did not get any answer, and wonder if someone has one.
Gaby
"Stephen R. Gregory" wrote:
> Hey ya'll!
>
> Well, I got about a 50/50 split about whether or not it's important that vias
> fill with solder or not...more precisely, the one's that do fill need to be
> at least 75% full. To add to that, Werner jumps in and says something about
> that it makes a difference whether the vias in question are at the outer
> edges of the board, or in towards the center...hoo-boy, I hate it when he
> confuses me with the facts!
>
> What I once thought was fairly a non-issue, now seems to have taken on some
> significance. But I'm still stuck with these boards. I don't know the precise
> operating environment, but I do know what they do. It's for a mail sorting
> system...we have several boards that we build that go into a system that
> sorts mail by reading the barcode on each piece of mail as it whips by at
> "warp speed" and sorts it by zipcode and whatnot...don't think it's gonna see
> extreme environments (unless they'll have these systems down in Antartica,
> but I don't think so because there ain't the volume of mail coming outta that
> place that needs a automated system such as this...hehehe) so I think the
> temp cycling will be pretty benign...but then again, I'm really guessing.
>
> Hate to scrap all these boards, and also hate to have to put all the labor
> into masking all the damn vias just to be sure they don't fill...also hate to
> call the customer and ask them if it's okay to run with these boards...they
> may, or may not have the insight that the TechNet list has about these issues
> in which case I may appear as "the boy who cried wolf" which makes me feel
> real enthusiastic about this whole deal...
>
> I'm just gonna come out and ask; what should I do?
>
> -Steve Gregory-
>
> ##############################################################
> TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c
> ##############################################################
> To subscribe/unsubscribe, send a message to [log in to unmask] with following text in
> the body:
> To subscribe: SUBSCRIBE TECHNET <your full name>
> To unsubscribe: SIGNOFF TECHNET
> ##############################################################
> Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional
> information.
> If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or
> 847-509-9700 ext.5365
> ##############################################################
##############################################################
TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c
##############################################################
To subscribe/unsubscribe, send a message to [log in to unmask] with following text in
the body:
To subscribe: SUBSCRIBE TECHNET <your full name>
To unsubscribe: SIGNOFF TECHNET
##############################################################
Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional
information.
If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or
847-509-9700 ext.5365
##############################################################
|
