Electronics Forum | Thu May 05 03:22:38 EDT 2005 | Hannu
I do not mean big, heavy transformers but rather small ferrite core transformers, with ferrites in the range of EF16 .. EF40. The weight of the lead and its percentage of the total weight is not the issue here. We simply do not want lead-containing t
Electronics Forum | Thu May 05 09:46:04 EDT 2005 | davef
Board fab, Defects, Pad coatings, Gold black plague articles 1 Nick Biunno's article: http://www.nukcg.org/downloadfiles/Hadco%20on%20Immersion%20Gold%20failures.pdf 2 George Milad's article: http://www.circuitree.com/ct/cda/articleinformation/featu
Electronics Forum | Thu May 12 04:37:30 EDT 2005 | Rob
1) Only if it's a real enhancement, and not to fix a fault in your design. 2) No, it just has to be instinctive & accurate. 3) Barcode is fine by me, but others swear by data matrix 4) Better than 1 in 10,000 - which could be once every 5 boards.
Electronics Forum | Wed May 18 14:58:05 EDT 2005 | splice
Hi, I am having some PTH non wetting issues. Setup and chronology of events is explained: Set Up; Part: 1 MM pitch connector 378 pins Solder: Kester Ultra Pure 63/37 solder Pot; 250 C pre heat; Peak 94C top side Flux: Qualitek 775, Fluxer: foam T
Electronics Forum | Wed Jun 22 06:18:07 EDT 2005 | dougs
We started looking at tabletop AOI systems last year, one of the main criteria, as we are a SC was that the sales engineer programmed one of our boards in front of us so we could see just how easy to program it was, also high on the list was performa
Electronics Forum | Sat May 21 08:22:42 EDT 2005 | davef
We agree with the previous poster. 50 pounds sounds like a lot. We don't know: * How often you dedross? * What method you use for dedrossing? * What portion of your dross that is dross versus solder? * How many boards do you run between drossings?
Electronics Forum | Wed Jun 01 09:39:15 EDT 2005 | George Truitt
Circuitcam and Checkpoint = �YOU GET WHAT YOU PAY FOR� It was 1 hour from the time I received the software until the time I was using it. I compared 2 Bill of materials (1200 placements topside 274 bottom side) due to rev changes, created a visual a
Electronics Forum | Thu Jun 02 03:31:29 EDT 2005 | Rob
The Fuji flexible model is the XP, (Stay away from the QP!) but (as a previous poster mentioned) I'm used to the Bomb proof Chipshooters. They still make these and from memory I think they are around $350,000 each. They will place BGA's and reasona
Electronics Forum | Thu Jun 02 03:45:07 EDT 2005 | grantp
Hi, We just installed some XP Fuji's and they are totally amazing, and place everything perfectly. We have not actually had any misplacements yet in the two weeks running, and they are fast, so I am very happy with them. Going to add a couple more.
Electronics Forum | Sat May 28 19:54:20 EDT 2005 | MikeaJ
I agree with Ken, the root cause could very well be obvious. However, take a look at the following items, these checks only take a minute to accomplish. 1. If your stepper drivers are the older 5410 Pac Sci modules, check for melted power connectors
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