General > General Technical Chat
Is there a way to remove corrosion off electronic components?
Refrigerator:
--- Quote from: BradC on May 18, 2023, 12:30:02 am ---Just be aware that Chloride ions are tenacious little buggers and like to stick around. Your post-etch cleaning process needs to be meticulous or you risk ongoing corrosion down the track (both figuratively and literally).
--- End quote ---
Copper chloride is pretty friendly as far as sticking around is concerned.
Unlike ferric chloride it doesn't perma-stain everyting it touches and it washes off very easily.
So far i've not tested the optocouplers, i'm pretty sure they'll be fine based on my experience with copper chloride.
And i don't plan on using them for anything mission critical, just low voltage hobby projects.
Refrigerator:
--- Quote from: Faranight on May 17, 2023, 03:16:51 pm ---What concentration of CuCl2 did you use for etching?
EDIT: Also, you may want to re-tin those pads after etching them because exposed copper (assuming the pads are copper) may oxidize over time when exposed to air. I hear there are some tinning solutions available that may do the job.
--- End quote ---
I don't know, copper chloride is self-regenerating, meaning it gets more concentraded the more you use it.
This particular solution is close to 10 years old.
Refrigerator:
--- Quote from: DavidAlfa on May 17, 2023, 03:55:55 pm ---Did copper chloride fully clean the black tin oxide or was it just "good enough"?
About 2 months ago I had to refurb a Tek TG501, everything was badly oxidized, see attached pictures.
Not wanting to take unnecesary risks as lots of parts were unobtanium, I replaced every socket and brushed all the ics by hand.
--- End quote ---
The leads take solder like new.
Although they don't look like bare copper, more like grey-ish brown.
At first i thought they were still corroded because the leads looked dark but they take solder perfectly well.
Coordonnée_chromatique:
Hello, there are some nichicon FG fine gold caps !
"Rich sound in the bass register and clearer high end"
Did it improve the transparency and details or imaging ? ;D
strawberry:
it is FW series cheaper
I buy them in bulk quantity
tested over frequency range and they are ~10% better than good chinese cap . I suspect nichicon longevity could be much better.
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