Full Site - : pictures white residue (Page 30 of 46)

Re: no clean rework

Electronics Forum | Thu Aug 12 09:02:08 EDT 1999 | Gian.D

| Hello, | | Could be that touchup operators are using too much flux. What are you dispensing flux with. Disposable or refillable flux pens are good to have around. | |Good! could you suggest some suppliers name or address or web site or e.mail...

MS2 molten solder surfactant

Electronics Forum | Thu Jan 19 13:53:06 EST 2006 | sarar

Hey guys - our lab has some data and photographs available for the MS2 for use in wave solder from some of the studies we have performed for P Kay. There are other versions being studied, but that is the only version available to market currently.

Re: More informations on water clean for CSP/BGA package

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

Clean the No-Clean

Electronics Forum | Mon Feb 13 10:33:57 EST 2006 | fredericksr

Hello, I am automating a process on our floor from wire solder hand application to dispensed paste and reflow. The process involves "lidding" a shielding lid around our assemblies for microwave quieting. The result is non-hermetic. For cosmet

Necessity of ROSE in commercial quality processes

Electronics Forum | Sun Feb 26 17:40:35 EST 2006 | GS

Hi, just my comment, theoretically No Clean means no Ion Contaminants from Flux, but it some some case ion contamination (Cl-Br-F) could come out from raw PCBs, from Components, from fingerprints, etc. To incorporate a ROSE step in the pro

Necessity of ROSE in commercial quality processes

Electronics Forum | Sun Feb 26 21:48:28 EST 2006 | Mike Konrad

Hi GS, Just a clarification� No-clean does NOT equal no ions. It equals less ions (at best). Automatic R.O.S.E (Resistivity Of Solvent Extract) testers are commonly used to detect ionic contamination from no-clean applications. Your comment rega

Flux Residues In Lead Free Wave Soldeing Process

Electronics Forum | Wed Mar 29 13:43:42 EST 2006 | Wave Master Larry

LISTEN thats the problem with the engineers.The engineers at my place of employment always crack that "engineering humor" too and i hate it.Hell Edison had no formal education. I liken myself to Thomas Edison no formal education but lots of practica

Re: wave solder

Electronics Forum | Mon Jun 12 22:02:48 EDT 2000 | Dave F

Jason: Wave soldering is the coolest thing!!!! First, so, what�s the chemical analysis of this white res? Can you point us to either tin, rosin, or something else? Second, how do you know that you are making these white residues? Could your boar

Black Pad?? (PICTURES)

Electronics Forum | Mon Oct 20 17:03:05 EDT 2008 | davef

Josh From looking at your pix, we don't have a clue. [And we're going down to the nurse's station to get our eye checked because we don't black bubkus.] More than anything else the: * White on the pads could be solder * Copper-penny brown on the pad

Vitronics XPM2 Question

Electronics Forum | Thu Dec 29 15:07:11 EST 2011 | cbeneat

My Company has 3 XPM2 Vitronics reflow ovens, one new in 06, one new in 08 and one new in 10. They have all been relatively trouble free over the last 6 years, however recently I'm seeing a white powdery substance on my filters, for the two oldest(s


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