Questions tagged [potting]
The processes of completely containing a PCB or entire electronic device in a compound designed to protect it from vibration, moisture, etc.
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ESP + Lithium Battery Potting
I'm designing a monitoring system for plants based on a lithium-ion battery and an ESP8266 (Adafruit Huzzah board). Due to the application, water may come in contact with the battery and/or ...
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Conformal coating compatibility - parylene- or polyurethane-based vs aqueous NaSiO4
How compatible are parylene-based or polyurethane-based conformal coatings for tin-whisker mitigation with aqueous \$NaSiO_4\$ (sodium silicate) conductive coatings used for EMI\RFI\ЕSD protection in ...
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Potting a board with SMTs
I am trying to find the correct potting compound for a device that will sit on top of lead acid batteries. It will have SMTs, and we would like it to tolerate temperatures as low as -40. Because of ...
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Is hot melt glue suitable as potting compound?
I need some small/cheap waterproof junction boxes for some 12v garden lighting. I am considering using little (25mm x 25mm x 15mm) potting boxes and after soldering the wires, then filling the potting ...
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Pebbles in potted electronics
I was recently taking a look at a failed power supply for 12V halogen lighting and noticed an unusual texture in the potting compound. I tried chipping some of it away with a screwdriver and got a ...
user125881
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Embedded microstrip antenna
How well known are embedded microstrip antennas in general and are they feasible. I want to pot a 2.4 Ghz antenna for product reliability/water and shock proof reasons, but finding information and ...
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Potting transformers for mechanical noise reduction
Potting some noisy transformers failed to reduce the sound. My question is where the problem might be.
The setup is a row of small (about 0.75x2x4 cm) transformers on a PCB as part of a power circuit....
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Waterproof enclosures
I have a simple farm gate monitor which I'd like to put in a rugged waterproof enclosure to keep it dry enough to operate outside for approximately ten years with no maintenance other than the ...
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High failure rates after pcb coating using DC 3140 RTV
We have been protecting PCBs using Dow Corning 3140 for many years now without any problems. Last couple of months however, one board after the other is failing after coating. We can't think of any ...
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How to protect trade secrets on board with SMD components?
I have a design which uses a secret technique, and I would like it to remain secret, at least for a period of time. My plan was to pot the board in epoxy. Specifically, MG Chemicals 832TC is ...
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USB Circuit Failure After Potting
I'm experiencing a strange failure of electronics after potting which I'm hoping to get some more insight and explanation to. The device is a custom, rugged USB drive in an Aluminium/Titanium body (...
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Is there a cheap thermally conductive, electrically insulating potting compound?
I've got some some ready-made 12v LED units. I wanted to pot each and put it in a metal container for robustness and to try and dissipate some heat.
I'd like to pot the circuit but was hoping to ...
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Potting Connectors
I work for a company manufacturing electronics. We have a few products where we pot boards into enclosures. Where it is done the incoming connections are always soldered for fear of condensation ...
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Pour-and-drain conformal coating as an alternative to potting
Is there a standard process to pour conformal coating, similar to potting, but then drain the excess? The benefit of draining the excess is to reduce weight and get better cooling.
From my limited ...
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How do you build a machine in a solid block?
I'm aware that a number of mass produced electronics are embedded in a solid thermal resin of some form.
How reasonable is that for the home hacker?
What materials are used?
How do you do it?
Are ...
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