Electronics Forum: senju solder paste water soluble jet (Page 6 of 23)

Re: High Temp solder Paste

Electronics Forum | Fri May 14 00:34:22 EDT 1999 | Mike D.

| I need some pics or documentation on how a finish soldered joint looks like for SMT component. I have various people who supposedly says has knowledge with High Temp says my joint could look better. The joint looks shiny and great except for a grai

Re: Void in solder bump

Electronics Forum | Sat Jan 16 03:06:36 EST 1999 | Wirat S.

| | Our spec on voids is 30% ball diameter in the center. On the component to ball and pad to ball interface, we use 25%. To determine this spec, we asked around. I don't know of any studies that have been done to verify if this is OK | | | | Regard

Micro Leadless Frame - solder wetting control

Electronics Forum | Thu May 09 11:59:34 EDT 2002 | russ

One thing I have done in the past although it may not be feasable in your case, is to process through normal reflow and then saturate parts with a high solids water soluble flux and re-reflow with hot air, iron, or even another pass through the oven.

Micro Leadless Frame - solder wetting control

Electronics Forum | Thu May 09 12:00:32 EDT 2002 | russ

One thing I have done in the past although it may not be feasable in your case, is to process through normal reflow and then saturate parts with a high solids water soluble flux and re-reflow with hot air, iron, or even another pass through the oven.

Possible to mix a No-Clean solder and a Clean solder process

Electronics Forum | Fri Apr 06 12:31:07 EDT 2018 | deanm

Your fluxes are required to be compatible per J-STD-001. I wouldn't even attempt mixing no-clean (rosin) and clean (assuming water soluble) fluxes on the same assembly, especially if the fluxes are from two different vendors. If your paste and liquid

Samtec Searay 500 pin connector solder wicking issue after reflow

Electronics Forum | Tue Jan 14 19:41:32 EST 2020 | avillaro2020

Hi Evtimov, Thanks for your response. Yes, the vapour phase is suppose to handle big and heavy boards, at least thats the intention. Well our thin board is like around 3mm which is not really thin. In our application the thicker the boards means more

Solder Paste Flux %

Electronics Forum | Mon Jun 13 09:23:54 EDT 2005 | russ

I agree with Dave on the Water soluble process for this part. It is interesting that I have yet to find a Water Soluble for lead free that works. I have experienced a lot of problems with the flux on these pastes, wetting, solder balls, etc... kind

CCGA - Stencil design and Reflow Profiling

Electronics Forum | Wed Aug 21 13:28:20 EDT 2019 | ameenullakhan

And what is the solder paste selection recommendation for the same. 1. Water soluble ( organic based flux solder based ) 2. No clean ( rosin or resin based solder paste ) customer is suggesting water soluble chemistry , which is having lot hot an

SN100C wetting problems

Electronics Forum | Tue Jul 31 18:46:40 EDT 2007 | rpadilla

Well, everyone has provided good advice, but if you are looking for a wave flux that can provide much better dwell times and consistent wetting throughout the hole fill, without making adjustments to your production process, I suggest going with Senj

Note for cleaning process

Electronics Forum | Thu Jun 26 13:55:56 EDT 2008 | dyoungquist

Water will not remove no clean flux residues because they are not water soluble. Solder paste with no clean flux should only be used when the assemblies do not need to be cleaned. That said, you can buy special cleaning solvents specifically for re


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