Electronics Forum | Sat Aug 14 17:39:37 EDT 1999 | Gerry S.
One of the DFM suggestions I've seen is to remove the solder mask web, i.e. the mask between pads on 20-mil QFP devices. The rational is that if the mask is thicker than the pad the mask can prevent the stencil from making intimate contact with the
Electronics Forum | Mon Aug 21 09:11:30 EDT 2000 | Eric Soderberg
Currently use Hysol TS300 latex mask and need to explore alternative methods of drying the mask. The mask is applied with a Asymtek Century Dispenser and placed on drying shelves. Air dry is dependent on temperature/humidity. Tried all the UV masks o
Electronics Forum | Sat Jan 23 12:37:35 EST 1999 | parag palshikar
hi, i am working towards developing a no-clean process for a customer at contract manufacturing facility. the assemblies have gold fingers on them. these are masked to prevent from any damage to them during reflow soldering. the earlier process ut
Electronics Forum | Sat Dec 19 16:54:43 EST 2009 | edmentzer
We use WSM-90 which is a red water wash off solder mask from Contronic Devices, Huntington Beach, CA, 714-897-2266. We bake the bare board at 150 F for 30 minutes after applying the mask. We run 130 to 140 F DI water in the inline cleaner which rem
Electronics Forum | Mon May 22 17:14:16 EDT 2000 | Justin Medernach
Hi All, I'm looking for companies who sell in-line solder mask applicators capable of dispensing peelable as well as water soluble mask formulations. Could anyone provide me with some names, please. If this is the wrong forum for this question, I d
Electronics Forum | Wed Oct 20 20:38:30 EDT 1999 | Dreamsniper
I am looking for sources of temporary peelable solder mask to mask/cover holes on a circuit bd that need not be soldered during wave soldering�..must have distributors in Australia. I�ve contacted some down here but they do not have products package
Electronics Forum | Wed Oct 13 18:37:32 EDT 1999 | Brian W.
There is a company in Florida that was using water soluble solder mask with their wash system. The gentleman to call there is Lynn Hurt, their Sr. Staff Engineer. Switchboard number is 352-799-6520. Brian
Electronics Forum | Wed Dec 16 18:22:42 EST 2009 | ken
We are looking for a new water soluble mask to cover SMT parts through wave. We currently use TechSpray wondermask w 2205. It works decent, but tends to leave a residue on boards even going at the slowest speed in the washer. Any suggestions would be
Electronics Forum | Thu Dec 17 03:10:34 EST 2009 | tod1967
Chemistries are limited for WS Mask. Try looking/changing other components, trying different flux types is easy, identify water cleanliness, is it ionic/no-ionic...probably is benign. Could be a plating reaction which is tough to investigate. Call
Electronics Forum | Wed Oct 13 14:27:08 EDT 1999 | mikeh
Dave F, We are currently using a latex based ambient/thermal cure material that is applied by hand or automated dispensing equipment. Printing is an option for us, but we have not had much luck with this particular material. The mask is peeled off a
