Category:PCB Assembly Solder Paste

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Solder paste is a material used in the manufacture of printed circuit boards to connect surface mount components to pads on the board. It is also possible to solder through hole pin in paste components by print solder paste in/over the holes.

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How long can you leave paste? Reply 2017-02-01 21:05:37
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Gregor Macek

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Hello
Just wondering if anyone has done trials on how long you can leave paste (tin-lead or pb free) on a board after you have printed it before it starts going 'off'?
Thanks Chrissie
FYI - have searched and found the 'pasting ahead' thread - just wondering if anyone went away and had a good look? They paste them here at this company (just joined this week) and they leave them on the shelf (room temperature, uncontrolled room, not even a clearoom!) for x amount of time. That x seem to vary, but it's over hours. and hours.
Been out of the industry for a while, so just wondering if it was just me thinking these people are crazy or if there had been some advances.
If it helps i can find out paste type.
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zakbc

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Juan Pablo Vales

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tomer-ye

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