Electronics Forum | Wed Jan 10 09:30:23 EST 2018 | buckcho
Hello, which type solder paste are you using?
Electronics Forum | Thu Jan 11 11:29:58 EST 2018 | mohammad
I use this one Chip Quik Inc. SMD291AX250T3
Electronics Forum | Sun Jan 07 08:46:08 EST 2018 | spoiltforchoice
Your paste should specify a number of times it is OK for various things to happen. The two you might care about are the "Stencil Time"/"Working life", which is how long the paste can be out of the pot on your stencil while you print PCBs. The othe
Electronics Forum | Tue Jan 23 02:50:57 EST 2018 | buckcho
8 hours @ 20-50% RH 22-28°C (72-82°F) >4 hours @ 50-70% RH 22-28°C (72-82°F)
Electronics Forum | Sun Jan 07 07:40:31 EST 2018 | mohammad
Hi everybody. I'm new at SMT soldering. I'm using a stencil to print solder paste on PCB. and my board has 0402 components that it make assembling process long so I can't complete a set of board in a day and I have to continue in the next day. what
Electronics Forum | Thu Apr 19 11:03:42 EDT 2018 | dleeper
When your stencil foil looks like cooked bacon it's time to replace it.
Electronics Forum | Sat Jan 11 09:56:15 EST 2020 | jakapratama
There's a lot of parameters to consider in defining stencil life cycle. Average squeegee pressure used, in-process cleaning frequency (auto and manual), physical appearance over time, tension reading over time, and so on to decide how many print cycl
Electronics Forum | Fri Mar 21 11:10:24 EST 2003 | davef
There is no standard. If your boards solder well, they're good. Well soldered boards that have been stored a long time will have field life similar to well soldered boards that have not been stored a long time. The solderability of boards depends
Electronics Forum | Thu Apr 12 20:27:10 EDT 2001 | davef
Tantalum caps degrade over time. You should not be seeing "chipped-off & cracks" regardless of the age. This should not be a shelf-life issue, unless you are storing them in an aquarium. Tell us the story. Solderability is a shelf-life issue and
Electronics Forum | Wed Apr 11 23:47:14 EDT 2001 | zam_bri
Thank you for the feedback guys. The concerns I have is related to components' performance as well as chipped-off & cracks. Does the performance also degrading over the time? thx
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