Electronics Forum | Mon May 10 12:15:46 EDT 1999 | Boca
We have been having an ongoing problems with radial electrolytic capacitors (thru hole)for some time. 1. When we wash them in our inline cleaners the sleeving shrinks up from the PCB leaving the 'can' exposed. Some designs have traces on the surf
Electronics Forum | Mon May 10 14:52:32 EDT 1999 | C.K.
| | | I left the company before this thing ever got resolved, so I don't know the answer, but here's what we did to get boards out the door. Baked them in a desicating oven. You know, the kind that pulls vacuum? It was a regular overnight process
Electronics Forum | Mon May 10 15:17:37 EDT 1999 | C.K.
| If I clean my assembly and find no visable contamination with the unaided eye, do I need to do cleanliness testing prior to conformal coating? | More than likely, you're okay if you can't see any contamination with the unaided eye. However, the
Electronics Forum | Wed May 05 23:26:29 EDT 1999 | Dean
| OK, my manager read an article on printing glue (aaargghh!)and wants to know why we aren't doing it. We currently use Fuji GLs and GDMs to dispense glue. I've never done it, but have seen it done at NEPCON and other shows. It looks OK, BUT what
Electronics Forum | Tue May 04 10:30:35 EDT 1999 | Dave F
| I am about to embark on an effort to evaluate 3 different solder material suppliers and their recommended materials for our assembly process, in an effort to find the best supplier/material. We do mixed technology, with NOCLEAN chemistry so I will
Electronics Forum | Sun May 02 18:52:36 EDT 1999 | JohnW
| Tombstoning 0805s w/palladium/platinum/silver terminations | | We are experiencing tombstoning problems on 0805 packages that have paladium/platinum/silver terminations. It comes & goes...... | | I�ve checked the reflow profile, and paste deposi
Electronics Forum | Wed May 05 10:57:25 EDT 1999 | Kevin Hussey
| | | Ok folk's has anyone used Alpha Metal's UP78 solder paste ? | | | | | | Our place is looking to move to that as the way to go, getting rid of the Hereaus 362's and Alpha 737's of the current set up. | | | | | | My question's are really : | |
Electronics Forum | Sat May 08 07:41:00 EDT 1999 | wayne sanita
hello, i have been using up-78 ultraprint for over a year now. at first we were getting lots of solder balls mainly on 0805's. this happened with all paste we used, too much solder under component leads. i have been using apertures reduced 10% homepl
Electronics Forum | Thu Apr 29 17:19:59 EDT 1999 | Kevin Hussey
Hi Boys and Girls, I've been given the "task" to turn off the nitrogen in our reflow ovens. I am using the BTU, TRS series ovens, each with eight zones. Also, I have a couple of new BT Paragon ovens with 10 zones. We currently are running Qualite
Electronics Forum | Tue Apr 27 13:58:15 EDT 1999 | Scott McKee
| Board Experts | | I am fighting with a board house about a delamination problem.. First the facts | 1) 10 layer board .063 thick HASL Finish Aprox 16 in x 17 in. | 2) 150 Boards with this part number built with the same reflow oven settings (2
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