That would be a right move to do. Do you have capabilities to take all nestles pictures (do analysis)? If you don't then we can help.
Regards,
Vladimir
SENTEC Testing Laboratory Inc.
11 Canadian Road, Unit 7.
Scarborough, ON M1R 5G1
Tel: (416) 899-1882
Fax: (905) 882-8812
www.sentec.ca
-----Original Message-----
From: "Upton, Shawn" <[log in to unmask]>
Date: Thu, 7 Jun 2012 14:03:05
To: [log in to unmask]<[log in to unmask]>; TechNet E-Mail Forum<[log in to unmask]>
Subject: RE: [TN] Looking for a specification
I suspect in my case I need to talk to the vendor (who is doing something to the board after it is made for us), as I suspect they need something above and beyond any given specification that might be shown in the IPC specifications. But if we can point to some figure/measurement and say, "this but to that number instead" I should be able to communicate that to the board vendor and get boards w/o the defect.
Shawn Upton, KB1CKT
Test Engineer
Allegro MicroSystems, Inc
[log in to unmask]
603.626.2429/fax: 603.641.5336
-----Original Message-----
From: Vladimir Igoshev [mailto:[log in to unmask]]
Sent: Thursday, June 07, 2012 10:00 AM
To: TechNet E-Mail Forum; Upton, Shawn
Subject: Re: [TN] Looking for a specification
I forgot to mention that in some cases a board can have something unusual (and potentially dangerous) but IPC might have nothing about it. Last time we had a case like that a year ago.
Regards,
Vladimir
SENTEC Testing Laboratory Inc.
11 Canadian Road, Unit 7.
Scarborough, ON M1R 5G1
Tel: (416) 899-1882
Fax: (905) 882-8812
www.sentec.ca
-----Original Message-----
From: "Upton, Shawn" <[log in to unmask]>
Sender: TechNet <[log in to unmask]>
Date: Thu, 7 Jun 2012 12:57:41
To: <[log in to unmask]>
Reply-To: TechNet E-Mail Forum <[log in to unmask]>,
"Upton, Shawn"
<[log in to unmask]>
Subject: Re: [TN] Looking for a specification
What is IPC-OI-645 "Standard for Visual Optical Inspection Aids"?
Looks like I will want to get copies of 600, 6011 and 6012; not sure if 960 is necessary or not (not doing mass produced boards).
Thanks.
Shawn Upton, KB1CKT
Test Engineer
Allegro MicroSystems, Inc
[log in to unmask]
603.626.2429/fax: 603.641.5336
-----Original Message-----
From: Vladimir Igoshev [mailto:[log in to unmask]]
Sent: Thursday, June 07, 2012 8:45 AM
To: TechNet E-Mail Forum; Upton, Shawn
Subject: Re: [TN] Looking for a specification
600 to begin with
Regards,
Vladimir
SENTEC Testing Laboratory Inc.
11 Canadian Road, Unit 7.
Scarborough, ON M1R 5G1
Tel: (416) 899-1882
Fax: (905) 882-8812
www.sentec.ca
-----Original Message-----
From: "Upton, Shawn" <[log in to unmask]>
Sender: TechNet <[log in to unmask]>
Date: Thu, 7 Jun 2012 12:35:43
To: <[log in to unmask]>
Reply-To: TechNet E-Mail Forum <[log in to unmask]>,
"Upton, Shawn"
<[log in to unmask]>
Subject: [TN] Looking for a specification
I think I am looking for two specifications, actually, or maybe it's in one.
Right now we are having an issue with defects on small copper features, and we're trying to quantify first what a defect is, and then how to specify it out on the FAB drawing. IPC-A-610 does a good job illustrating what is and what isn't acceptable for assemblies; but I'm not sure if there is one for bare PCB's. Is there one?
[The issue at hand are some very small pads, on the order of 6mil diameter. We're pushed into 1oz copper (I usually prefer 2) due to trace clearance constraints, and this is a hard gold application. We are having issues where the pads are typically chipped, possibly from electrical test of the board.]
Thank you.
Shawn Upton, KB1CKT
Test Engineer
Allegro MicroSystems, Inc
[log in to unmask]
603.626.2429/fax: 603.641.5336
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