Electronics Forum | Tue Nov 01 09:57:18 EST 2005 | Chris
Hi, I am experiencing cracked solder joints on ceramic resonators after the ultrasonic plastic weld process. PCB assy is placed into plastic housing and then housing halves are ultrasonic welded. Not a soldering problem. I know this component is
Electronics Forum | Sun Mar 12 19:09:45 EST 2006 | cmiller
We had the same issue on a batch of boards and the board house concluded it was because they did the sikscreen before the imersion gold. (which was done out of house-which is very undesireable). I never knew if this was really the case but thought I
Electronics Forum | Fri Mar 17 08:58:20 EST 2006 | russ
Not aware of any published standard for this. Usually we take care of this upfront with the supplier. No more than X amount of panels with one or more Xouts in any lot, No more than X number of Xouts per panel, so on and so on. Not defending boa
Electronics Forum | Thu Dec 07 21:08:48 EST 2006 | Cmiller
it is not that I am aware of either. Make sure you get your boards from a house that does the gold plating in-house or you will continue to have the problem. The gold needs to be plated immediatly after the nickel, not a few days later. I have only h
Electronics Forum | Wed Oct 08 10:54:35 EDT 2008 | stepheniii
Check with your stencil house. At one time I used a Panasonic screen printer with the fiducial camera looking at the top of the stencil. The stencils are cut from the bottom so the fiducials had to be cut all the way through. And the stenicl house wo
Electronics Forum | Wed Nov 19 17:29:05 EST 2008 | elias67
It is not as easy as just buying a Laser machine. There is much more involved in bringing this in house. With the price of stencils these days, you would have to be consuming a very large amount of stencils to justify such an investment. Steve is r
Electronics Forum | Wed Apr 29 08:32:08 EDT 2009 | davef
We'd expect the contract assembly houses in your area could do that soldering for you. Ooops, you said 'customer' that means you're a contract assembly house and don't want to give business to your competitor or give them a lead on your customer. Me
Electronics Forum | Wed Jun 10 08:43:32 EDT 2009 | rgduval
We use Advanced Circuits out in Colorado for a lot of our builds, and are quite happy with their quality and service. Other houses I've used that may be appropriate for you: Vermont Circuits Electropac Both have excellent quantity. I know that Ver
Electronics Forum | Fri Mar 19 15:44:35 EDT 2010 | cisridn
Coins are sometimes used on PCB's with RF Power Field Effect Transistors. These boards are usually mounted in an housing. They provide a ground path for the transistor to the PCB and thermal path to the housing. The coins are usually made of aluminu
Electronics Forum | Wed Dec 12 10:30:56 EST 2012 | clausule
wow didn;t expect any possibilities.. will discuss all of the above points tomorrow. the size cannot be bigger because pcba housing and outer housing have been fabricated. The backside can be fully used! I told them to use both sides though... So
