Didn't think of that. It doesn't make sense to my frail brain, but will try & report back.
Ed Popielarski
Engineering Manager
970 NE 21st Ct.
Oak Harbor, Wa. 98277
Ph: 360-675-1322
Fx: 206-624-0695
Cl: 949-581-6601
"It's one kind of victory to slay a beast, move a mountain, and cross a chasm, but it's another kind altogether to realize that the beast, the mountain, and the chasm were of your own design."
https://maps.google.com/maps/myplaces?hl=en&ll=48.315753,-122.643578&spn=0.011188,0.033023&ctz=420&t=m&z=16&iwloc=A
-----Original Message-----
From: Wayne Thayer [mailto:[log in to unmask]]
Sent: Friday, May 08, 2015 10:57 AM
To: [log in to unmask]; Ed Popielarski
Subject: RE: Dpak outgassing second pass
Spray a little flux on the first side when running the second side?
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Ed Popielarski
Sent: Friday, May 08, 2015 1:08 PM
To: [log in to unmask]
Subject: [TN] Dpak outgassing second pass
Greetings fellow Technoids,
An interesting debacle arose, and I'm unsure if there is a solution.
Dpak components on side 1 solder fine, <25% voids, 100% edge wetting.
On 2nd pass (top side, big heavy components) the Dpaks on side 1 outgas and
exceed 25% (not a spec, just a target) but violate edge wetting (S/B 100%)
as the outgas tends to blow out the edge somewhere.
Any suggestion on how to eliminate this phenomena? Parts cannot be relocated
due to aerospace re-qual cost.
Thanks in advance!
Ed Popielarski
Engineering Manager
[cid:[log in to unmask]]
970 NE 21st Ct.
Oak Harbor, Wa. 98277
Ph: 360-675-1322
Fx: 206-624-0695
Cl: 949-581-6601
"It's one kind of victory to slay a beast, move a mountain, and cross
a chasm, but it's another kind altogether to realize that the beast, the
mountain, and the chasm were of your own design."
https://maps.google.com/maps/myplaces?hl=en&ll=48.315753,-122.643578&spn=0.0
11188,0.033023&ctz=420&t=m&z=16&iwloc=A
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