00cheater
1442
8
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I need to do about 100 joins like that, each with a 32-pin, 0.64mm pitch, flat cable.
Feb 4, 2024 9:46 AM
00cheater
1442
8
0
I need to do about 100 joins like that, each with a 32-pin, 0.64mm pitch, flat cable.
frischcode
I believe the "correct" approach is a hot air station (https://youtu.be/9EV78UPvRfY) but you can do it with "drag soldering" (https://youtu.be/nyele3CIs-U). The green part of the board? That is called "solder mask"; solder does not want to stick to that. That is the basic principle behind drag soldering.
thedoci
There's soldering practice kits you can buy for various types of soldering techniques. To learn Arc soldering and drag soldering it's best to practice on the kits first. Most are just soldering LED lights but it's great training because you can see right away if it works or not.
00cheater
i found out how this is done. it's done using a hotbar soldering machine. at home you can use a T12 spade tip you can buy from ali, it'll do the same job. you do NOT want to do drag soldering, it'll fuck up the registration. you also don't want to do reflow aka "baking" (it'll melt the cable insulation) and you definitely don't want to be doing arc soldering, whatever that is, or robosolders (the hot bar does it all in one go). no need for paste, just put a length of solder wire on it.
NoDadSo
Good comments here.
Also take some old or broken circuit boards first, and train yourself on them. Try and try again. Do it over and over until you get experienced and self-secure enough to do it on the real thing.
That way you can try out different tools e.g. soldering irons/tips, wick for removal and different flux/solder combinations to get the result you want.
dancinshroom
Generally done by soldering paste and then baking it. Or in a industrial setting by a arc soldering machine and programmed arms
boarbque
It can be done, but it's not for the novice. Look up 'Drag Method' or 'Drag Soldering'. Experienced solder techs often use microscopes for connections that fine. *Absolutely necessary* is a good flux. MG Chemicals and Chipquik are good brands.
GBMaker
*Rosin based flux. Not acid. That would be unfortunate.
GBMaker
Get yourself a Weller WE1010NA solder station with an ETH tip. Use liquid rosin flux and some 0.020" dia. 63/37 wire solder. Be sure to...
GBMaker
... clean your work with 95% Isopropyl alcohol and a q-tip or acid brush. Try to find some flux core 0.015" 63/37 if you can. The 0.020"...
GBMaker
... is also flux core, I should have mentioned that earlier.
GBMaker
https://www.amazon.com/dp/B077JDGY1J?th=1
frischcode
Use an extractor fan or work outside with plenty of fresh air. Most solder is lead based. And you don't want to breath that. You can get non-lead based solder. It's much more expensive and not as good.
GBMaker
The best quality RoHS wire solder is SAC305. https://www.amazon.com/AIM-Metals-SAC305-015-GLOWCORE-2-5-Clean-Solder/dp/B07XYB86F5/