Electronics Forum | Wed Jun 30 17:58:01 EDT 1999 | Boca
| My guess would be trapped flux continuing to be active after soldering. Is the tarnish there immediately after exiting the machine? Do you remove the mask and wash right away? If the solder is reflowing under the mask on the component side it wo
Electronics Forum | Thu Feb 15 19:44:50 EST 2001 | davef
I assume Roland [er someone like that] explained on the Main Conference also known as the Forum, the blue "New Thread" button near the middle of the page and 1 1/2" in from the right margin as the preferred way for posting a new thread. [Well, if th
Electronics Forum | Mon Mar 05 22:51:05 EST 2007 | davef
Humiseal * HT500 HumiTape silicone free (Kapton tape isn't) * HT600 HumiTape [ESD safe version] Try: Shercon [10425 Slusher Dr, Santa Fe Springs, CA 90670; 800-228-3218 F800-955-8988 562-946-8555 F562-946-1015 http://www.shercon.com] "Conformal Coa
Electronics Forum | Sat May 13 07:03:16 EDT 2000 | Sal
guys, Currently running a very high volume product, with the gold fingers at the edge of the board masked off using Kapton tape to avoid any form of contamination during reflow and wavesoldering. I've heard alot of about the gold finger gloves, my q
Electronics Forum | Thu Oct 05 10:37:10 EDT 2006 | David
Hello all, We have problem with voids in one of our product. We are soldering IC (package SO8) with under the components grounding connection. The ground pad for this component has 3 via holes (before producing we have to cover this 3 holes from b
Electronics Forum | Tue Aug 21 05:05:52 EDT 2007 | vangogh
Hi All, I would like to get some inputs regarding this.... I have bare PCB which were stored with kapton tape attached on the Au plated pads. These were stored for close to a year. Upon removal of kapton tape, we noticed discolorations on the edges o
Electronics Forum | Fri Feb 11 16:15:05 EST 2000 | Chris McDonald
You can get a better Kapton tape (you must be using the cheap stuff) that leaves no residue. If that fails then you can get edge maskers that slide overtop of the finger and they are reusable. Or you could get a solder pallet made for the assemblies
Electronics Forum | Thu Mar 15 16:58:11 EST 2001 | mparker
The only way I know of waving the bottom side with SMT parts installed without epoxy would be to use a masking media, Kapton Tape, wave pallet that keeps those parts from being susceptible to gravity once the connections are reflowed. If there is ano
Electronics Forum | Mon Jan 25 13:51:07 EST 1999 | Parvez PAtel
Steve i agree with u. we use kapton tapes for test puproses at our facility and they do not interfere with the printing results. Infact we sometimes use it to mask off unwanted apertures on stencil underside. But could their applcation affect the gol
Electronics Forum | Fri Nov 13 20:17:35 EST 1998 | Chuck Garth
| | I believe that gold fingers on my circuit boards are being | | contaminated and need to clean them with some chemical | | solution. Any recommendations. | | | Chuck: What is the type and source of your contamination? Dave F | We are using a s
