Electronics Forum: instruments and 2010 and 2010 and 2010 and 2010 and 20ma (Page 6 of 11)

Conformal coating mask dots and halos

Electronics Forum | Thu Feb 25 10:21:49 EST 2010 | jdumont

My guess would be that the adhesive used on the dots contains silicone. We use 1B73 which is also acrylic and it hates silicone. We use silicone RTV to permanently mask around some connectors and unless its fully cured before coating it will cause l

OSP finish and Omnix 5002 solder paste(SnPb)

Electronics Forum | Sat May 15 11:27:26 EDT 2010 | davef

We'd expect both OSP poor wetting and improper reflow recipe to show-up in more places than just this one component. But if those are the only choices, we'll go for 'wrong solder paste.' Ooops, that's not one of the choices. Ok, OK, we'll take poo

Automated soldering station (pros and cons)

Electronics Forum | Fri Jan 29 11:23:54 EST 2010 | ppwlee

Smtnet, I am looking at pros and cons for automated soldering. The application is a simple multi pin through-hole soldering on a high volume manual assembly line. The goal was to eliminate defects associated with missing solder pins which goes undet

Mixing No-clean and water soluble processes

Electronics Forum | Wed Feb 24 07:28:40 EST 2010 | drt

Agree with what has been said so far. Check with your end customer and make sure the white haze appearance of the board will be acceptable. You will never get the board to look like it did before you started. It may be clean but it won't look like t

Mixing No-clean and water soluble processes

Electronics Forum | Wed Feb 24 10:23:04 EST 2010 | xps

60° C). Moreover (by IPC standard)... "White residues resulting from no-clean or other processes are acceptable provided the residues from chemistries used have been qualified and documented as benign...". So, use an EDX or IC analysis in order to

Mixing No-clean and water soluble processes

Electronics Forum | Thu Feb 25 03:37:25 EST 2010 | xps

Sorry, but I don't know this brand. Anyway pay attention, because if the chemistry is resin based, is difficult to clean and the residuals may be hygroscopic. So, I only can suggest you to read the data sheet and follow the instructions by the solder

Mixing No-clean and water soluble processes

Electronics Forum | Thu Feb 25 15:24:58 EST 2010 | jdumont

We use the OM-5100 and wash it with relatively good results. Just dont let it sit longer than a few days before wash. We've used Zestron AC200 and A-250 in a batch cleaner set to 140 wash temp for 8-10 min @ the recommended concentrations. We have h

UIC GSM and EPC5 <-> EPC9

Electronics Forum | Fri Dec 17 07:02:00 EST 2010 | dilogic

Does anybody know is EPC9 plug-compatible with EPC5? I got one brand new EPC9, but can't bring USOS up. OS/2 boots, but then hangs-up during USOS initialization. I've browsed UIC archives, but can't find any relevant document, even if there exist one

Blurry and double vision with Samsung CP40-LV

Electronics Forum | Fri Dec 17 09:04:17 EST 2010 | wolverine

We have an older model CP40-LV that will start out the day with blurry and double vision, then after about twenty minutes of just idling, the vision slowly improved until the machine could find the board fiducials and do a passable placement job. Th

BGA: reworking BGAs, testing and inspection

Electronics Forum | Mon Feb 08 14:08:08 EST 2010 | sparky_

Greetings, We are looking to purchase equipment to rework / repair our circuit boards with BGAs. Our newer boards are starting to have more and more BGAs. Is there any information that "ranks" BGA rework stations? - a kind of a consumer reports for


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