Electronics Forum | Tue Sep 17 15:47:42 EDT 2002 | stepheno
Where I worked previously we had some boards with a couple 15 mil pitch parts. The first batch we got all had undersized pads. We had lots of bridging. We had less bridging with bigger pads. The ball size in the paste makes a bigger diffence regar
Electronics Forum | Fri Sep 20 14:23:50 EDT 2002 | larryk
PizzaFred, Scott mentioned lots of good ideas. Take one of your boards to each vendor and see what it takes to program the board how long it takes for it to become online. I've found some that are easy to program, but require 40 or more assemblies to
Electronics Forum | Tue Sep 24 14:38:53 EDT 2002 | Jim M.
The EMS company i work for assembles a small PCB board that requires 10 solid press fit pins installed. The pins are Phosphor Bronze, CDA-510 Alloy, Grade A, 3/4 hard with a finish of .00012 min tin/lead over .00005 min nickel.I would like these pla
Electronics Forum | Tue Oct 15 20:33:43 EDT 2002 | davef
First, this is a very interesting question. Second, there is no specification. Third, companies develop guidelines for rework based on their expectations for their product reliability. Things to consider are: * Motorola allows no product shipments
Electronics Forum | Fri Oct 25 11:21:05 EDT 2002 | soupatech
This may sound like a stupid question but keep in mind I am very new at this and most of the training I have recieved has been from operation manuals and this forum (thanks to all). Our purchasing agent (new hire) is ordering a stencil for the first
Electronics Forum | Sun Nov 10 14:17:40 EST 2002 | anonname457
We just went through the same comparison shopping for our company -- and we ended up choosing Juki machines -- as our comparison was between a MY9 with a hydra head and the Juki 2010 & 2020 combo. Both machines have excellent software packages and ar
Electronics Forum | Sun Nov 10 08:23:02 EST 2002 | davef
Organized or not, it is very easy to end-up with a bag of "fly shit" after sweeping the floor. Making measurements: * Search the net on "capacitance meter" to find an equipment supplier. HP [Aligent?] and IEC make very good meters. [We just use a F
Electronics Forum | Fri Nov 15 15:02:37 EST 2002 | MA/NY DDave
OK I know it is funny to have two different PWB/PCB processes, one for pre production and one post production yet it is possible if controlled and implemented in a strategy. In debug if your company's experience has been for a repeated need to do IC
Electronics Forum | Fri Nov 22 10:18:33 EST 2002 | Joaquin Rodenas
Dear Mr. Liang I'm a service ingeneer in a distributor of FUJI products. My first suggestion is get some help from the FUJI dealer in your territory, but anyway try the following: First of all, check again the FTP tool included in F4G-main windows
Electronics Forum | Wed Dec 18 12:49:04 EST 2002 | Mike F
I've used rice, too. The trick is to make the bag big enough to hold down the part or parts, but not so big it interferes with the top side heating of the parts around it. I've never actually used lead or steel shot, the heaviest fill material I ever
