saw a video supposedly about why circuit boards are green, thought "hey why *is* it that soldermask is usually green anyway" and gave it a click
one of the first lines in it states that circuit boards are usually made of phenolic paper
instantly lost all trust for whatever the person in the video was saying because how do you do *any* amount of research into circuit boards and think that phenolic paper is a current thing in common use??
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@Felthry Was the presenter bald, bearded, and a glasses-wearer?
@LexYeen ...yes how did you know?
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@Felthry The algorithm suggested the same video to me not long ago, and I'm familiar with several of his other channels. He's made similar mistakes on other topics before.
@LexYeen it seems like a really basic thing to overlook unless all your reference material is textbooks from the 80s
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@Felthry That's the pattern, yeah. Broadly good info, but some details tend to fall through the cracks.
for those not familiar: phenolic paper (usually grade FR-2) is a PCB material that hasn't really been used since the 70s or 80s in anything but the absolute cheapest stuff, and even the absolute cheapest stuff these days is going more and more towards FR-4 fiberglass
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