Electronics Forum | Tue May 11 07:50:52 EDT 1999 | Graham Naisbitt
| If I clean my assembly and find no visable contamination with the unaided eye, do I need to do cleanliness testing prior to conformal coating? | Douglas, It is highly advisable to test for ionic contaminants because a coating seals in as well as
Electronics Forum | Wed Jan 27 23:29:28 EST 1999 | parag palshikar
| | i am working with the noclean process and getting white residues on the bottomside of the board probably due to the | | wave soldering flux.i am using a no-clean solder paste and a noclean wave solder flux.The boards passed the accelerated tempe
Electronics Forum | Wed Oct 06 00:26:04 EDT 1999 | Karlin
| Hi, | | Help! Could anyone help to enlighten me on this? | | Question: | | If I have a CSP/BGA package of size X by Y and the standoff gap between the component and PCB is Z, What is the maximum allowable Y/Z or X/Z that using a normal water cl
Electronics Forum | Wed Oct 06 08:41:42 EDT 1999 | Dave F
| | Hi, | | | | Help! Could anyone help to enlighten me on this? | | | | Question: | | | | If I have a CSP/BGA package of size X by Y and the standoff gap between the component and PCB is Z, What is the maximum allowable Y/Z or X/Z that using a n
Electronics Forum | Fri Sep 17 04:49:10 EDT 1999 | Brian
| | | Is feasible to have an electronic manufacturing company near the beach? How affect the corrosion the electronic components? | | | | | I guess it depends what you mean by 'near'. Will the building be a custom design or an existing one? What kin
Electronics Forum | Wed May 22 08:43:40 EDT 2002 | pjc
I have experience cleaning NC for military boards. The reason for cleaning the NC is due to conformal coating requirements. Zestron Vigon A200 and Atron AC 100, as well as Petroferm Hydrex DX have both been effective at cleaning Alpha UP78 NC paste.
Electronics Forum | Wed Feb 02 12:11:31 EST 2000 | Dave F
Casimir: Resistivity of Solvent Extract (ROSE) testers measure ionic contamination by washing boards with a DI water/IPA solution. (No-clean people: Stop and go on to something else.) The testers are process control instruments used to monitor a
Electronics Forum | Thu Jul 27 04:29:18 EDT 2006 | pbarton
We have our waste water tested periodicially by a local lab to ensure that we are in compliance with local discharge regulations and as part of ISO14001 approval. This analysis includes levels of metals as well as organics, but it will tell you littl
Electronics Forum | Mon Jun 28 10:03:22 EDT 2004 | davef
First, welcome to your new job. Second, IPC-TM-650 2.6.14 is only loosely an �Ionic Contamination (Electromigration) Test�. * Electromigration Test, IPC TM 650 2.6.14, 2.6.14.1 * Ion Chromatography for Ionic Cleanliness, IPC TM 650 2.3.28 Third, I
Electronics Forum | Fri Jul 30 09:43:44 EDT 1999 | C.K.
| We are having a process related problem with pullup resistors on a controller card which has a I960 micro-processor. | The controller monitors signal inputs and it's own resources then blinks a LED to indicate its working. The problem is that after
