protection of small electronics

[dwedeking2]

since I've moved to Key West and am moored out (vs in a marina) I've noticed a dramatic increase in humidity. this has really shown up in the small connection points (usb, phone connections, connection tabs on my dewalt chargers) for my personal electronic devices. I have seldom used devices in pelican cases with dehumidifiers but is there a spray or something i can use too stop corrision before it starts on daily used items?

[a64pilot]

I often conformal coat the circuit boards.
It’s a coating made specifically for this and is often the difference in Marine electronics and regular electronics.
It’s a lot like clear fingernail polish and can be bought many places, Amazon for one. I swiped mine from work.
Of course the item has to be taken apart, I just brush the conformal coating on.
https://en.m.wikipedia.org/wiki/Conformal_coating

[dwedeking2]

Originally Posted by a64pilot

I often conformal coat the circuit boards.
It’s a coating made specifically for this and is often the difference in Marine electronics and regular electronics.
It’s a lot like clear fingernail polish and can be bought many places, Amazon for one. I swiped mine from work.
Of course the item has to be taken apart, I just brush the conformal coating on.
https://en.m.wikipedia.org/wiki/Conformal_coating

i was looking more for something to protect the contact points.

[john61ct]

Fluid Film, Lanocote, or Boeshield

Are all of them similar dielectrically?

[john61ct]

Originally Posted by a64pilot

I often conformal coat the circuit boards.

Any caveats or downsides?

link to reco products?

[a64pilot]

Originally Posted by dwedeking2

i was looking more for something to protect the contact points.

Silicone grease, AKA lightbulb grease. Reapply as necessary.
I fill plugs with it, plugs like IPAD charging plugs as I use mine as a plotter, also have a Bluetooth GPS on deck and a Garmin sat comm device, an insight? Maybe I forget the name, but they all charge via USB so I fill those with silicone grease

[a64pilot]

Originally Posted by john61ct

Any caveats or downsides?

link to reco products?

Pain to apply as it requires getting to the boards.
I just swiped mine from work forget the name, but think it’s silicone based, smells like lacquer though and dries just like fingernail polish or model airplane paint, dries pretty quickly.
I know of no downside, but there always is something

[john61ct]

Yes just getting some gear apart can break it & void the warranty.

Some stuff like my non-marine 3kW charger,

likely (hopefully) won't be using too often,

I think I'll just keep in an airtight Pelican style case with moisture absorbing stuff.

[dwedeking2]

Originally Posted by a64pilot

Silicone grease, AKA lightbulb grease. Reapply as necessary.
I fill plugs with it, plugs like IPAD charging plugs as I use mine as a plotter, also have a Bluetooth GPS on deck and a Garmin sat comm device, an insight? Maybe I forget the name, but they all charge via USB so I fill those with silicone grease

thank. I've ordered some

[kas_1611]

There's something called ContraLube which sounds like it might be just the ticket for what you want to do.