2 ms·
Since no other navy nukes have chimed in on this thread to speak about ETMS—eutectic point is a huge piece of the puzzle and there are tradeoffs for selecting b
by nemosaltat 2y ago
Since no other navy nukes have chimed in on this thread to speak about ETMS—eutectic point is a huge piece of the puzzle and there are tradeoffs for selecting between 60/40 and 63/37. Fillets suck, bifurcated terminals are worse.
For any other Navy nukes, I wanted to link to a good reference on what ETMS is (was?) but couldn’t readily find anything. If anyone has a reputable link to publicly available course material on their solder grading rubrics or the 7-step, I’d be interested.
- bigiain 2y agoNot what you're asking for, but I have this from NASA in my bookmarks: "THROUGH-HOLE SOLDERING GENERAL REQUIREMENTS" https://workmanship.nasa.gov/lib/insp/2%20books/links/sections/601%20General%20Requirements.html https://workmanship.nasa.gov/lib/insp/2%20books/links/sectio... This one might be relevant too (but it's too long for me to read through right now to confirm): "Military Standard - Standard requirements for soldered electrical and electronic assemblies (1989)" https://electromet.com/wp-content/uploads/2015/09/Electromet-MILSTD2000a.pdf https://electromet.com/wp-content/uploads/2015/09/Electromet...