Electronics Forum | Thu Mar 19 12:26:10 EDT 2020 | yuaanliie
You have mostly set in your mind before purchasing PCB i.e. PCB is an acronym for the printed circuit board. Last month I purchased PCB from Great PCB.
Electronics Forum | Wed Mar 11 04:05:02 EDT 2020 | floravictor
Due to the impact of the epidemic, will everyone's purchases be affected? We are pcb factory in Shenzhen, we are already back to work. skype: qjthomasxiao
Electronics Forum | Wed Apr 23 07:27:21 EDT 2008 | realchunks
Floor life of a PCB is rated in years. Are you asking about the solder paste or something else?
Electronics Forum | Wed Apr 23 03:19:30 EDT 2008 | jkhiew
Hi all, Can anyone advise me what is the recommended floor life for pcb assembly prior to wave soldering before drying/degassing ? Thks Joseph
Electronics Forum | Fri Apr 25 04:44:56 EDT 2008 | jkhiew
Hi all, I mean after post adhesive oven curing (SMD at bottom side) prior to manual insert of PTH components (top side), what is the recommended storage time prior to wave soldering in order to avoid pin/blow holes and sunken joints issues (pcb asse
Electronics Forum | Wed Apr 23 17:28:46 EDT 2008 | davef
The need to prebake boards to remove moisture from the board [to prevent voiding] prior to wave soldering is driven by the thickness of through hole plating. * 1 thou [25um] or greater requires no prebaking * LT 1 thou [25um] requires prebaking
Electronics Forum | Wed Apr 23 19:00:39 EDT 2008 | stevek
It depends on the laminate but a PWB is like any other MSL component. Some fab shops are only waranting standard FR4 laminates for 45-60 days when processed at lead free temperatures. The best thing I can say is to try some weight gain/loss experim
Electronics Forum | Wed Nov 12 13:00:58 EST 2008 | cisridn
I have to build test fixtures for RF Power transistors. These components generate alot of heat so the PCB is soldered to a baseplate. The problem I am having is that I am getting too much solder flowing thru the via's and flooding the topside of th
Electronics Forum | Thu Nov 13 09:27:21 EST 2008 | cisridn
I have tried covering the vias with thermal tape and that did not work. I like the idea of plugging the via with a temporary solder mask. I will try that the next time I build a fixture which should be tomorrow. This is mainly a problem only becau
Electronics Forum | Tue Nov 18 09:52:56 EST 2008 | cisridn
Fortunately, I only have one more set of boards left. I may or may not have to assembly, I have not gotten the word yet. Anyway, it would be good to know how to rework the boards with SR1000. I usually do not have any input when design team spins a
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