Electronics Forum | Sun May 06 13:58:18 EDT 2018 | davef
Board fabricators expect you to give them "Gerber's" [Extended Gerber, or RS-274X] that describe your schematic in standardized terms that they understand. For the process flow from schematic design to board layout through board fabrication, look he
Electronics Forum | Tue Jan 14 17:22:16 EST 2020 | emeto
Avillaro, would you say that vapor phase process was selected, because the boards are so thick and heavy? I would assume so. Have you ever tried to run them through reflow oven? To understand better your challenge, we need to understand the setup be
Electronics Forum | Fri Feb 19 12:39:53 EST 1999 | Brian Stumm
Joe, When developing profiles I recommend using a board that is populated the same way as the reflow will see in actual production, no more components, no less. My company manufactures ovens and part of our QC Procedure is to make sure the thermal
Electronics Forum | Thu Mar 28 03:19:54 EST 2002 | Opor
Hi All Does anybody have done the profiling board life time experiment? What is the proper life time of FR4 profiling board? How can we know when the profile board or thermocouple should be change?How to use dummy board instead of using gold/real
Electronics Forum | Tue Sep 05 16:26:53 EDT 2006 | Bill
Thinking about this auto-mode on Grid-Lok..... Ok, the board is warped, lets say positively, the pins conform to the warped board... what about the effect on top side and squeegee pressure? It will be much higher and could damage stencils, right? Pos
Electronics Forum | Mon Sep 24 07:38:01 EDT 2007 | chrispy1963
I never saw in any post if your machine uses the camera to find the board edge or if your machine uses the bottom front rail mounted board stop sensor. Also is this with only one particular job you run on this machine or is this happening with ALL
Electronics Forum | Mon Jan 08 07:46:52 EST 2001 | Juliano Vasconcelos
Hello everybody ! I�ve known thickness of gold over nickel board of chip on board (COB) boards are between 5 �n 15 microinches. A supplier suggested 1 to 4 microinches of gold over nickel ! Have someone any expierince about it ? I�m glad if you help
Electronics Forum | Fri Apr 28 15:55:39 EDT 2000 | J. G.
I am looking for a company that buys and recycles scrap boards. I talked to some company at NEPCON last year that recycles boards but have since lost their name. I am wondering what people do with thier scrap boards and solder sample boards. Due to t
Electronics Forum | Thu Jan 03 10:43:48 EST 2002 | davef
Just thought of something. Sorry to be late with this. If you decide to dewarp these boards, consider: * Marking the boards perminantly with a code to help key your failure analysis people that a customer return was processed differently than other
Electronics Forum | Fri Oct 18 21:31:15 EDT 2002 | caldon
Many times the board may look the same but incases there could be subtle differences that could cause your process to go out of process limit. With boards that look alike you still need to consider: Solder paste (Is key to the reflow profile) compone