Electronics Forum | Tue Aug 29 10:36:09 EDT 2006 | Chunks
With the UP2000 that has vacuum board hold down, the Grid Loc hoses defeat the vacuum in order for them to exit the work table. Big boards require more girds, thus more hoses. Set-up between large and small boards takes time to remove or add the gr
Electronics Forum | Fri Jan 04 09:44:59 EST 2008 | philkaz
Hello, I am Philip Kazmierowicz and I work with KIC, a Thermal Profiling company. We have done many lifetime experiments on Printed Circuit Boards over the years. The key thing to understand is that if the primary material of the board in FR4 fiber
Electronics Forum | Mon Dec 18 10:49:20 EST 2000 | marys
When reading about the design of high performance cicuits I have recently encountered references to bromine free circuit boards. What are bromine free circuit boards? When would one find them most useful and who supplies such boards?
Electronics Forum | Tue Aug 14 15:45:06 EDT 2001 | davef
BOARD BAKING SCHEDULE: Bake time depends on the board thickness and construction. For laminated FR4 PCB, we bake between 6 and 24 hours at 100�C. ROOT CAUSE OF THE PROBLEM: Heating moisture entrapped between the laminations of the board too quickl
Electronics Forum | Wed Oct 24 12:18:03 EDT 2001 | Hussman
It's usually up to the board house. They use their lines to make a variety of other customers boards and never want to be locked into using a special mask. I'd task your QC department to catch and return these boards. That usually straightens out
Electronics Forum | Thu May 09 17:28:33 EDT 2002 | davef
There is no IPC specification, nor should there be. * There are just too many peculiarities in the design and fabrication of PWB. * The issue is not defining how to store boards. The issue setting expectation for reliable products and allowing you th
Electronics Forum | Thu Jul 18 02:13:40 EDT 2002 | computer
Hi, Currently my company is running entek coated boards. But whenever there is a misprint, we cannot wash the boards as it would diminish the coating. Is there anyway to clean the boards without removing the coating or is there a way to re-coat
Electronics Forum | Thu Mar 27 17:29:11 EST 2003 | paul
can any one tell me if you should run the same heat on the same boards no matter what deffrent parts are on the board Should you do a oven profile for every deffrent board or is it the thickness of the board that matters.
Electronics Forum | Fri Aug 15 09:48:10 EDT 2003 | davef
First, what do you mean by "mishandled OSP" boards? Second, we don't like to bake our OSP boards, because of the potential to degrade the coating. Why do you want to bake these boards? Third, why not paste-up a board, reflow it, and assess the sol
Electronics Forum | Sun Feb 15 21:28:44 EST 2004 | Annoymous
Gridlok is good but it will also depends on your board. Board that is warpped and thick will not be flatten by gridlok as the concept for this support system is to conform to the shape of the underside of the board with very minimum upward force from
