Electronics Forum | Tue May 26 21:27:33 EDT 1998 | Earl Moon
| | | | | I'm reviewing my board fab spec. It calls for a minimum SnPb thickness of 50 microinches on HASL PWB's. I've looked at other specs that call out anything from 30 to 80 microinches, and others that just say the copper pad must be covered a
Electronics Forum | Wed May 27 11:19:34 EDT 1998 | Earl Moon
| | | | | | I'm reviewing my board fab spec. It calls for a minimum SnPb thickness of 50 microinches on HASL PWB's. I've looked at other specs that call out anything from 30 to 80 microinches, and others that just say the copper pad must be covered
Electronics Forum | Thu Feb 27 02:55:53 EST 2020 | hexton
I want to avoid peoples preferences as they will differ and will not be a deciding factor. A heat gun will introduce risk to surrounding PTH components and having to add protection for those, will limit any gain in productivity. There is no question
Electronics Forum | Sun Jul 26 05:56:28 EDT 2015 | spoiltforchoice
http://www.surfacemountprocess.com/solder-paste-printing-process.html this site has some pretty good general advice for the novice. I am in no way affiliated with it and I have no idea as to its eventual commerical aims (if any). ENIG if your produc
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 | Wed May 12 16:31:25 EDT 2004 | Mark @ SolderStar
In answer to your questions. (1) pls can any body throw some light on the reflow profiling? Reflow profiling is the process of confirming that you PCB's that pass through your reflow oven are produced within specifications provided by solder paste
Electronics Forum | Wed Jan 11 22:47:31 EST 2006 | davef
We didn't intend to light anyone's fur on fire [get anyone's underwear in a knot, roil the waters, have a cow man] about consultants. The Phil Zarrow wrote a useful paper that could help in evaluating paste. Here read it ... Evaluating Solder Paste
Electronics Forum | Wed Dec 15 12:50:39 EST 2010 | hegemon
We evaluated Vapor Phase Reflow in 2010, and in the short time I experienced the machine, I came away with the following. The advantages you are (hopefully)already aware of, such as overall tranfer of heat to the PCB, no chance of temperature oversh
Electronics Forum | Mon May 31 15:09:56 EDT 1999 | JohnW
| | | | | | | | I have always thought it to be a good practice to wash SMA's with water soluble paste (WS609) soon after reflow. Is there a time limit as to how long a board should sit after reflow before washing said board? For instance; processi
Electronics Forum | Mon May 31 15:10:14 EDT 1999 | JohnW
| | | | | | | | I have always thought it to be a good practice to wash SMA's with water soluble paste (WS609) soon after reflow. Is there a time limit as to how long a board should sit after reflow before washing said board? For instance; processi
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