Electronics Forum | Thu Mar 02 14:33:26 EST 2000 | Doug Philbrick
I have a customer wanting to hide the identity of a particular component on a PCB assembly. The product cannot be potted and since the PCB is the product he doesn't want to pour over that one chip for aesthetics reasons. Any ideas on ways to permanen
Electronics Forum | Wed Mar 01 13:06:36 EST 2000 | Graham Naisbitt
$100K for a full in-line. We can do conventional spray at 30 to 50% less but you must mask components you don't want to coat. If they are on 1 end only of the board, then dip coat which is the least expensive option starting at around $12K for up to
Electronics Forum | Tue Feb 29 21:18:00 EST 2000 | Gwen Z
When an assemblied board was on active service, what's the main reason for its failure:the package broken; the mechanics fatigue failure under thermal cycle; the corrosion caused by salt and vapor; the broken chip inside the package etc. I think all
Electronics Forum | Thu Feb 24 18:08:42 EST 2000 | Travis Slaughter
Baking boards, especially multi layer, will help with blowholes and delimitation, but not with solder balls. Normally about 120c for 1 hour or so is sufficient. I usually will not go to this trouble unless a board has proven to be a problem or if th
Electronics Forum | Fri Feb 25 10:23:46 EST 2000 | K3 Equipment
Greg, If you are having a problem, i would first check board manufacturers process. Also are they shipping boards to you in seal packages (a must if you are in a humid part of the country.) Most of the time with a few simple process controls moistur
Electronics Forum | Mon Feb 28 17:16:38 EST 2000 | Stu Leech
We just got a lesson on the effectiveness of heat sealed metalized vapor barrier bags. A customer sent us two bags of 100% saturated PBG components by air freight. This was for a demoisturizing test. When we found the devices 80% dry when they arrive
Electronics Forum | Tue Feb 27 10:26:19 EST 2001 | jcboetcher
Hi I'm a first time user of SMTnet. I have a Electrovert Wave Soldering Machine Ultra 2000 with a AT&T Spray Fluxer. I'm looking for a upgrade or a replacement Spray Gum Binks Model No. Z-6-434 and or nozzles ( Fluid tip assembly No. 184A / 156A.
Electronics Forum | Mon Mar 12 04:29:15 EST 2001 | Hon Choi
We've got some products at the sample run stage that we are using hand soldering to assemble and the results are terrible, especially in the reliability of the product. I found this one company that has a machine that places the part AND laser solde
Electronics Forum | Wed Mar 21 01:19:29 EST 2001 | PeteC
We're watching more carefully at post-print and pre-reflow inspections for products with the gold finger contacts. Not 100% sure the cause. SMT line people suspect primary cause is improperly wiped stencil. Do you know any other possible causes? We g
Electronics Forum | Wed Mar 21 19:27:54 EST 2001 | Steve
In a true JIT system, there is no WIP, only raw materials and finished goods. (RIP is the raw in process.) In this type of system, you should only have one board at each work station, with possibly some assemblies in kanbans in between stations. Ev
