Electronics Forum: via and residue (Page 1 of 22)

Weak joint strength and black residue

Electronics Forum | Fri Jun 08 17:22:51 EDT 2007 | naynayno

We have been producing an IMS assembly with SMT dpak's for some time. However, we recently encountered a new problem by chance - the parts can be flicked off with a finger nail. I state by chance because the solder joints are wetted and shiny with

via tenting and pluging

Electronics Forum | Fri Nov 03 02:32:56 EST 2006 | shivam

HI ALL, can anybody clear me what is via tenting and via pluging?? second one, if i use via in pad for an.5mm bga what care i should taken, what should be the soldermask open in top and innerlayers for via?how it will directly connect to top layer

via tenting and pluging

Electronics Forum | Fri Nov 03 07:28:27 EST 2006 | davef

Via filling methods are: * Tenting * Plugging * Capping * Flooding Tented Via. A via covered with dry film soldermask; the via is not filled. When tenting from both sides there may be issues with trapped air that expands during mass soldering. Plug

yellow residue

Electronics Forum | Tue Aug 22 16:46:31 EDT 2006 | Steve

Using Interflux IF2005, Have electrovert as well as new Novastar Topside of board temp is 265F solder bath 275c. I assume applying via foam fluxer. Not sure.

via as test point

Electronics Forum | Mon Feb 26 20:02:42 EST 2001 | davef

First, I don�t understand why your board fabricator can�t do a good job plugging your vias. Additionally, when you consider that they forgot to plug the first batch of boards, it makes me wonder if they are desirable as a supplier. Generally, we us

flux residue problem

Electronics Forum | Fri Sep 04 02:09:03 EDT 2009 | sachu_70

Hi Walter, Do you refer to a sprayfluxer operation? The problem seems to be a parameter setting issue. 1. Ensure the wide angle spray reaches PCB with optimum jet pressure. You could pass a glass plate to understand flux coverage and view Jet pressur

No-Clean flux residue and RF application

Electronics Forum | Tue Aug 30 10:46:27 EDT 2005 | lyrtech

Hi, I curently have an interesting challenge. But I don't have all the knowledge to solve it. One of our boards is used in RF applications. We noticed that the No-Clean flux residue makes interferences in the RF signal. Removing the flux residue so

No-Clean flux residue and RF application

Electronics Forum | Tue Aug 30 12:24:02 EDT 2005 | patrickbruneel

Yes a No-Residue solder paste exist. email me for more info Pat

No-Clean flux residue and RF application

Electronics Forum | Wed Aug 31 04:04:32 EDT 2005 | Slaine

im running some tests at the moment for hand soldering using a no residue water based flux from MBO, called WBF-01. leaves a good clean finish.

No-Clean flux residue and RF application

Electronics Forum | Tue Aug 30 15:05:23 EDT 2005 | Shean Dalton

Dear Ing, Have you analyzed why some RF device aren't operational after washing? An assumption is that failures are related to the ultrasonic energy applied. Other possibilities are for poor rinsing, poor drying, inadequate washing on those failed

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