Electronics Forum: flux and lifting (Page 1 of 39)

SOT-223 Flux trapped under part and lifting off pads

Electronics Forum | Wed Sep 29 09:29:47 EDT 2010 | swag

Take a few parts from the reel and look close at the parts to make sure the bottom surface of the leads is below the bottom surface of the body.

SOT-223 Flux trapped under part and lifting off pads

Electronics Forum | Thu Sep 30 11:30:46 EDT 2010 | babe7362000

Take a few parts from the reel and look close at > the parts to make sure the bottom surface of the > leads is below the bottom surface of the body. Yes I did that and they are below the body. I found the problem I think. The solder mask is abo

SOT-223 Flux trapped under part and lifting off pads

Electronics Forum | Wed Sep 29 08:26:03 EDT 2010 | babe7362000

We are Currently running a Board and it seems that the SOT-223's on the bottom side have flux and water trapped under the part. Nothing has changed in our process and this is the only board that it is happening on. We are using Kester R562 water wa

Solder and flux

Electronics Forum | Wed Oct 23 08:40:20 EDT 2002 | davef

Yer not making this easy. What kind of flux? If no-clean flux, what controls are you using to assure you are: * Applying the correct amount of flux? * Properly activating the flux? If water washable flux, talk to us about your cleaning methods and

Solder and flux

Electronics Forum | Wed Oct 23 07:32:18 EDT 2002 | Yannick

Sorry, the layer is made of flux.

Solder and flux

Electronics Forum | Thu Oct 24 10:05:59 EDT 2002 | Yannick

I don't know the name of the flux. but is a no-clean solder paste.

Wave flux and profiling

Electronics Forum | Mon Dec 18 23:24:50 EST 2006 | grantp

Hi, Yes, I would hate to resort to cleaning, but the product must be clean. We have been using palettes to keep most of the flux off the PCB, but there is still residue around the connectors. Does anyone suggest a good no clean flux to use with le

Wave flux and profiling

Electronics Forum | Tue Dec 19 10:08:10 EST 2006 | George

Grant, Why don't you try a water-base flux which is No-clean, VOC-free also? I have tried the 270WR flux from AIM with good results even on lead-free process. My $0.02, George

Wave flux and profiling

Electronics Forum | Mon Dec 18 14:36:09 EST 2006 | samir

Yikes!! In-line cleaning, to clean cosmetic and benign residues (from a NO-CLEAN) flux... You sure you can't switch fluxes? Another variable with residues is the solder mask. Depending on mask type (glossy, matte, semi-gloss, or semi-matte), will

Solder and flux

Electronics Forum | Wed Nov 06 05:13:01 EST 2002 | Dreamsniper

Crystalline flux if it is really clear should not be a problem. We were using Amtech paste before and we have the same results. Sometimes we mistakenly see it as a dry joint because of the reflections from the lighting of our Metcal inspection system

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