Hey everyone 👋
So I know this is probably a no brainer for some, but I don't really know much about soldering, sealants, etc on PCB's, so I was hoping that someone who does, can answer a quick question.
I just received my M21K today and noticed this red material on the PCB when removing the battery to charge it. I'm guessing it's some type of protective sealant? But I'm not entirely sure. If it is though, what is the reason for using it here? And do I have to worry about it melting when thermals increase? I have a lot of convoys, but I've never seen Simon use it on any of my others. Curious why here. Thanks in advance.
by SyKo-Elite
9 Comments
[deleted]
Helps keep the heavier component from knocking off from a sideways drop is my guess. Someone who knows, is that a buck driver?
Is it solid if you touch it or slimy
r/AskElectronics
Ask Simon, I bet he’d know.
It’s some sort of adhesive/glue, not sure what kind (possibly UV curable?). Most likely to secure the inductor in place so there’s less risk of it getting knocked off the PCB if the light takes a hard hit. Could also possibly mitigate coil whine to some degree.
Staking compound so the PCB can be flipped and reflowed for components on the other side. Generally your EDA will designate certain components as needing glue when reflowed if they’re too heavy for solder to keep them attached.
Inductor glue or high temp epoxy.
Lick it and see what it tastes like 😁