Electronics Forum | Fri Mar 28 22:01:00 EST 2003 | MA/NY DDave
Hi Yes I agree, yet this subject is about Tombstoning and oven profile or even oven working correctly across the entire product is a sub-set of how one gets those little chip babies to sit and stay where they belong. Flat and Heeling like their mast
Electronics Forum | Thu Jul 10 15:05:30 EDT 2003 | stepheno
Don't forget about moisture sensitive devices already on the board if you are reflowing the entire board again. No doubt the other BGA's have been absorbing moisture since the boards were first reflowed. You may have to bake the boards before reflo
Electronics Forum | Tue Sep 16 10:58:03 EDT 2003 | swagner
I am currently having a discussion with a pcb supplier about inadequate hasl thickness, we are measuring below 40 microinches of hasl when our spec calls for 100 microinches as the minimum. Our supplier came back with the statement the entire indust
Electronics Forum | Mon Oct 06 18:41:47 EDT 2003 | davef
In addition to our earlier comments, do not be misled into thinking that silicone materials, being rubbery, will transmit shock less. Nothing is farther from the truth. Many silicone rubbers are almost totally incompressible in the short time scale.
Electronics Forum | Mon Nov 03 11:13:44 EST 2003 | ADAM
Guys When stripping conformal coating from an entire assembly, how do I know the stripping solution won't damage anything on the PCB ? stuff like electronic sensitive devices, wiring, labelling and plastic hinges. And secondly when conformally coati
Electronics Forum | Thu Dec 02 18:09:28 EST 2004 | resslerr
There are a few solution out there...Aegis, Valor, Technomatix...each with their own shortcomings. Check out the integrated solution offered by Router Solutions Inc. & Sony. They offer a real solution to cover the entire assembly and test cycle, wi
Electronics Forum | Mon Mar 22 19:46:17 EST 2004 | pdeuel
The bottom side is going into reflow somewhare near melting point of solder. Reduce bottom side temprature. Get a good mole so ramp and soak tempratures can be checked on bolth sides of the PCB. The object is to keep bottom side parts from approching
Electronics Forum | Thu Nov 11 09:29:54 EST 2004 | rlackey
Wow, it's amazing what you can achieve with smoke & mirrors! Only joking. Does the original via hole covering solder get put on at the PCB fabrication plant, or by the customer? & Does the entire board get reflowed or do you have a process where ho
Electronics Forum | Tue Jul 19 12:03:34 EDT 2005 | cyber_wolf
CLampron, There is no place for PCB thickness in a Mydata program. The board thickness is of no consequence.(As long as the thickness is uniform across the entire board) When you run a program, the Z axis touches the surface of the board to determin
Electronics Forum | Wed Aug 03 13:34:10 EDT 2005 | Stefan
Thank you for the advise. It was not a Fuji machine. I sold quite a few pieces to this dealer, assuming that I would get the same kind of quality in return. I don't like to badmouth anybody particular not an entire country. However, the particular de
