Electronics Forum: solder spotting (Page 2 of 28)

kapton dots and liquid solder mask

Electronics Forum | Wed Aug 10 11:57:16 EDT 2005 | pr

Is the peelable mask (put on by the boardhouse) flat on the surface of the pcb? If so can you tell me the material name, so maybe I can find a picture? We have to print adhesive on the board, so the mask has to be flat. That is why Kapton from the b

Trouble with wave solder pallet

Electronics Forum | Wed Jan 12 10:05:37 EST 2005 | SuePH

Help!! Just got some new wave solder pallets in house. The pallets are 12 by 8 inches solid composite, with only two 1/2 inch by 1 inch spots cut out for the connectors. When they go over the wave, the solder wants to cling to the bottom of the pal

Sticky solder, solder flagging, bridging.

Electronics Forum | Fri Apr 21 14:58:04 EDT 2023 | rgduval

I mean...there are a ton of possibilities for bridging on selective solder before you ever get to alloy purity. Are the bridges happening consistently in the same spot? Are the leads too long? Can you modify the approach/exit/peel off to address? Wh

Mixing no-clean solder with activated

Electronics Forum | Tue Jun 19 17:33:09 EDT 2001 | genny

We don't actually leave the residue on the board, even though the Kester spec sheet says it is ok not to clean - we do spot hand cleaning with Safety Wash. Kester also said that there shouldn't be any problem with mixing RA with no-clean, although w

solder ball after reflow owen

Electronics Forum | Thu Aug 24 15:37:50 EDT 2006 | Chunks

Hi Any, This is from an earlies thread "Solder Ball After Reflow Process". Date: August 16, 2006 01:52 PM Author: Russ Subject: Solder Ball After Reflow Process Oven settings are meaningless here. What does the board see? It is the paste we a

kapton dots and liquid solder mask

Electronics Forum | Tue Aug 09 13:25:24 EDT 2005 | pr

From what I can gather, the annular rings are used for grounding when these boards are put in housings. A screw goes through the hole and is torqued down. If there is excess solder on the annular ring, the screw doesn't seat properly. The pallets cov

High-speed solder paste dispensing. MY500, MY600, FX-D....?

Electronics Forum | Tue Dec 30 20:23:34 EST 2014 | jeff701

What does "maintain it really good" entail? For reference, this is our maintenance procedure for the FX-D: - At the end of an 8hr shift, the solder paste path is purged start-to-finish using Nordson's ValvePurge. The machine's then powered down and

Best solder paste printer with solder paste inspection and AOI function-Recomendation

Electronics Forum | Tue May 24 07:51:43 EDT 2022 | spoiltforchoice

Doesn't exist. True Solder Paste dispensing is a Mycronic only solution with Essemtec coming behind with slightly less cpapbility. With Essemtec you can have one machine that prints and places, that saves space, with Panansonic you can have machines

What will be the effect of additional solder paste?

Electronics Forum | Tue Apr 19 13:23:33 EDT 2016 | vchauhan

We are using Vicor SMT J-Lead VI Chip which is big component on the bottom side. The manufacturer recommends to have 6 mil stencil but the customer required 10 mil stencil. The PWB has gold contacts on both sides. We noticed some mini solder splashes

SPC for Wave solder (defects on PCB's)

Electronics Forum | Wed Feb 08 12:23:12 EST 2006 | slthomas

Just to nitpick a little, collecting defect data and reacting to it really isn't an SPC function. Cal's recommendations (determine critical processes, assess process capability and acceptable limits) are spot on and are pretty much the definition of


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