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Reply To: | TechNet E-Mail Forum. |
Date: | Fri, 3 May 2002 16:17:33 -0400 |
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Dick,
We are using a connector that you describe, two rows of 5 pins. We use a
8mil stencil cut 1:1 and it solders fine. IPC does not give a whole lot of
detail as to how much solder fillet or anything, just that the fillet
length along the side be a minimum of the width of the pin (25mils), we get
that easy. The heal fillet is were you will run into problems. (as you
stated). Our design guys made a note on the drawing to eliminate
confusion, but we come pretty close to meeting IPC. We are Class 2 thought.
Good luck
David
Ascom Energy
Palm Coast, FL
"Krug, Dick" <[log in to unmask]>@IPC.ORG> on 05/03/2002 10:04:51 AM
Please respond to "TechNet E-Mail Forum." <[log in to unmask]>; Please respond
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Subject: [TN] Class 3 Solder Fillets - SMT 25 mil square pin Headers?
We assemble primarily IPC class 3 products. We have now got some SMT
headers, using 25 mil square pins bent to form a "gull wing" style lead.
There is no way we can get a solder fillet to reach a 25 mil thick lead
thickness. Can these be assembled to meet Class 3 requirements? I think
I've seen something indicating a deviation from these requirements, but I
don't know where nor can I find it again. Any suggestions?
Dick Krug
Sypris Electronics
Tampa, FL
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