Electronics Forum | Thu May 06 18:31:29 EDT 2004 | Dreamsniper
"Polymide Films absorb a great deal of moisture. Polymide laminates must be baked at more than 1 hour at 100'C or better for a double sided PWB prior to exposing the laminate to elevated temperatures such as that required for soldering. Moisture abso
Electronics Forum | Tue Jul 27 07:58:21 EDT 2004 | mmjm_1099
Hell as for storing the used paste have someone bring in baby jars. Yes I agree thats alot of wasted money if you throw it away every day. Plus since I'm on the subject why not use a bottle warmer? I persoanlly store our paste in a mini-fridge (along
Electronics Forum | Mon Jan 10 22:43:43 EST 2005 | davef
First, we know nothing about your assemblies or how storing them in an "unconditioned" warehouse will affect their performance or post-storage processing. Second, there are no specifications, because what might be good in one application might not b
Electronics Forum | Fri Apr 01 01:26:17 EST 2005 | Marv
A couple of things.. 1) The problem is more than likely on the magazine board itself (TC2), most likely the pal chip that stores the serial number and feeder information (you could swap this with a working magazine to verify) 2) The magazine connecto
Electronics Forum | Sat Jan 13 03:43:38 EST 2007 | Stephen- SMT engineer trainee
We are now using solder paste(OM325) and I have some problems on the folowing process: 1. We use the solder paste softer(Malcom SP-1) to warm-up for 20 mins, when it just take from refrigerator. Is there any problems for solderpaste performance? 2.
Electronics Forum | Tue Aug 21 05:05:52 EDT 2007 | vangogh
Hi All, I would like to get some inputs regarding this.... I have bare PCB which were stored with kapton tape attached on the Au plated pads. These were stored for close to a year. Upon removal of kapton tape, we noticed discolorations on the edges o
Electronics Forum | Tue Sep 23 13:08:26 EDT 2008 | slthomas
Put the new stuff in the back and pull from the front. A pass through from stores makes that a lot easier. Bar codes are a wonderful thing if you can get people to use them. Wand it into stores then wand it sequentially into production via a queue.
Electronics Forum | Fri Oct 10 05:04:26 EDT 2008 | bing007
We are using Mulicore MF101 flux and a Vitronics selective soldering machine on a lead-fee assembly and are having trouble with nozzles blocking even when the nozzle aperture is increased. Has anyone come across this problem before using fluxes with
Electronics Forum | Thu Oct 30 11:34:51 EDT 2008 | davem
Guys, So I recently started working for a small CM in Southern N.H. We currently use 2 Magic Chef Mini wine friges to store the solder paste (63/37, RoHS). I've been monitoring the room temp (and humidity) and the frige temps all this week. The pro
Electronics Forum | Thu Dec 10 12:53:12 EST 2009 | deanm
Bryan, Dyoungquist is correct. You should not need to mix solder paste. Overmixing solder paste can adversely affect it. Follow these guidelines and you should be fine: 1. Keep unopened containers of paste in the refrigerator. 2. Take one container
