Electronics Forum | Thu Oct 11 14:56:27 EDT 2007 | chef
Thank you- my point exactly and it starts in SMT- operators pulling the wrong paste from the fridge, touch up using the wrong solder wire, etc. My solution- GET THE LEAD OUT!!!!! I'm a CM- high mix, low to medium volumes. No steady all day every day
Electronics Forum | Wed Aug 14 13:24:18 EDT 2013 | eadthem
We just designate shelves with signs, PULL HERE, Move UP NEXT, MOVE UP 2nd, MOVE UP 3rd, We also keep paste in the incoming case, if it has one until its time to open it. Our operators are the ones who stock it and as long as they know they own
Electronics Forum | Tue Jul 23 18:19:30 EDT 2019 | slthomas
It depends on what you mean by "going from....to....". If I just decided that I wanted to try a Type 4 paste on something that I'd been having problems printing, I'd probably just grab one (edited to add that we have a couple of re
Electronics Forum | Wed Jan 28 19:39:08 EST 1998 | Steve Gregory
| | What is the lifetime for a typical solder paste ? | | How long can boards be stacked waiting before the paste goes off ? | Lifetime and tack time depends on: | - Manufacturer | - Flux/mixture | - Environmental conditions | Typical lifetime is dep
Electronics Forum | Mon Sep 03 08:56:26 EDT 2001 | henriksn
Hi everyone, I work in a development firm, that has a small prototype department. We have recently invested in a small automatic SMD pick&place machine. When mounting over 100 different components, the machine runs out of feedercapacity, and the res
Electronics Forum | Sun Nov 12 01:02:58 EST 2006 | Thomas
One printer 2 smt lines = No problem, but then you will need 2 ovens. It is even sometimes a more valuable cost savings depending on what production you are into. At first the stencil printer with a divertion conveyor, then straight ahead into the 1
Electronics Forum | Wed Feb 20 10:04:15 EST 2008 | slthomas
Yeah, it blows, but basically we toss it when it quits printing. We've never seen any visible quality issues we could attribute to recycling paste like this so we keep doing it. When we start doing BGA and X-raying stuff we'll take a closer look at w
Electronics Forum | Wed Feb 14 16:58:12 EST 2018 | cbart
you would be best to get this from your paste/solder manufacture. but here are some rules of thumb: -Solder paste out of fridge before use - get out the night before needed.. don't let your op's warm on the oven!! you will regret that! if not over ni
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