Electronics Forum: used paste back in fridge (Page 1 of 3)

Solder paste supply in Catridge Vs Jar

Electronics Forum | Mon May 14 17:16:27 EDT 2001 | slthomas

We use both, cartridges for water soluble and jars for no clean. The only reason we do is so they can't possibly (knocking on my head) mix it up. Pros: Jar - you can put paste back into it if you want to wash your stencil, change jobs after lunch,

Air inclusion in solder paste

Electronics Forum | Mon Mar 27 15:10:48 EST 2006 | ms

Hi Steve Thanks for your reply. Your comments make it sound like it may be the nature of this paste. Any one else agree? Paste control is fairly good. Paste is put in fridge straight after it arrives at inwards goods, (4deg). Removed from fridge

Solder paste in Syringe vs Jar

Electronics Forum | Thu Nov 21 02:43:07 EST 2002 | jate

Hi, Jar's quality is easier to measure. If you want to know paste viscosity etc. it's easier if you use jar. I have bad experiences about cartridges. I used cartridges for a short time but I change it back to jar because flux separated too easily in

Tin Lead BGAs in leadfree paste

Electronics Forum | Sat Mar 11 15:05:54 EST 2006 | Kerm

Hi Craig: I agree with muse. The problems almost always will show up later on duringg life cycles in terms of reliability problems. While the solder joints may look acceptable right after production there is no guarantee of meeting the reliability r

Solder paste storage

Electronics Forum | Tue Feb 27 14:02:16 EST 2024 | spoiltforchoice

There are plenty of paste chemistries now that can be stored at room temp for far longer than 2 weeks. You should not return a paste to the fridge once it has been opened. If a tub of paste came out of the fridge mistakenly I see no reason to why it

Has anyone heard of a no clean paste that can be cleaned in straight DI water ?

Electronics Forum | Tue Jan 30 07:29:21 EST 2018 | charliedci

I believe the correct statement (I've been told) is "the process is no clean". The solder paste is "low residue". As a CM, in the past we had customers that insisted on a wash after soldering. We used DI water with a saponifier which had mixed result

Warming up solder paste at start of days production

Electronics Forum | Tue Jul 27 07:58:21 EDT 2004 | mmjm_1099

Hell as for storing the used paste have someone bring in baby jars. Yes I agree thats alot of wasted money if you throw it away every day. Plus since I'm on the subject why not use a bottle warmer? I persoanlly store our paste in a mini-fridge (along

Re: Paste in hole

Electronics Forum | Tue Apr 07 05:44:02 EDT 1998 | bob willis

If you want there is a video tape, CD ROM and report on the use of the technology available from my web site www.bobwillis.co.uk | | Hi all, | I would like to have some information regarding the paste in holes process.We are the Backplane manufact

Solder Balls in Boards

Electronics Forum | Mon Jun 21 11:14:25 EDT 2004 | exmaintenanceleader

Dear Kanwaljit Singh, my opinion is following: 1)solderpaste type is ok - usual (alpha-metals has this problem inside the paste paste- holder problem) - what do the operator when production change -clean well the stencil holes!! no visible rest on

Voids in solder fillet

Electronics Forum | Wed Apr 16 16:55:38 EDT 2003 | russ

Thanks for the info, Here is a couple more questions (and you thought you were done) What size are these caps /res? how thick is your stencil? what type of oven are you using? what is the finish of the board? Anyway, it seems like (from a distance)t

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