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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Light guides for potted LEDs
I built a PCB with LEDs on it. The PCB must be protected from the environment by potting it in silicone. I don't trust that silicone to be clear enough for the LEDs to be visible, so I want to use a ...
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Potting DIY precision resistors made from resistance wires
I'm making a decade box and I need 100 Ω resistors for the hundreds increments range. I'm quite picky; I want the resistors to have 0.05% tolerance. I've checked online and 100 Ω resistors with that ...
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Why are some relays not completely sealed?
Here are some of the pictures of PCB relays I found online. One may notice there are these opening/holes on the top or bottom of the package. What are the purposes of these 'air vents'?
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RF device best way for capsulation (potting in a case)
I need to encapsulate a Bluetooth beacon in the case, has to be flexible and weather resistant.
what would be your suggestion?
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PCB potting with Lithium battery
I'm designing an electronics prototype for a college project that will be buried in the soil in the middle of a field. So power is basically not available. I am adding a solar panel and want to ...
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BLDC waterproofing for submergance
I have modified a number of brushless DC motors to make them work underwater. The motors are the type with hall effect sensors.
I did the following procedure on several motors, but the results have ...
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Best-practices for potting a high-voltage circuit
Can someone recommend best-practices for potting a passive DC high voltage (<20 kV) circuit? I'd like to eliminate a micro-discharge problem we are seeing.
Details of our use-case follow:
I have a ...
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Are aluminum electrolytic capacitors suitable for encapsulation/potting?
Because aluminum electrolytic capacitors generally incorporate a venting mechanism for over-temperature/over-pressure events, are they suitable for complete encapsulation in potting compound?
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RF and encapsulation materials
I have a WiFi application that we need to encapsulate for environmental reasons. We did some test shoots with Krayden PA2692 since the molder had experience with it. It's a polyamide material. The ...
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What could be the reason for chip capacitor failure due to silicone potting?
Is silicone potting of PCB board beneficial or risky?
What could be the best material for encapsulating a power supply board?
I used 2 part mixed silicone potting compound for encapsulating a ...
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Can you tell me more about "re-enterable" potting compound?
I heard the term "re-enterable potting compound", which is a gel-like (possibly hard?) material that can be used to fill electronics enclosures for water intrusion protection and other things.
What ...
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Potting microSD card inserted in slot with epoxy resin
I would like to know whether it is possible to completely cover/pot a microSD card inserted in a slot (which is soldered on a pcb) with an epoxy resin. Will the sd card continue working properly? Will ...
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PCB material that does not swell from water absorption?
We designed a microchip to sense high pressures under water. The chip senses pressure through a thin diaphragm that deflects and a corresponding piezoresistor circuit that measures the deflection. For ...
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Is there an appropriate "potting" compound for a DC power barrel connector?
I need to modify the DC connector on about 100 AC/DC power supplies and will be installing a barrel connector like this:
I would like to make the connector more permanent and prevent a user from ...
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Board to Board Connections in Potted Electronics
We are contemplating a design which will need 2 PCBAs and be potted. One board is quite "special" so it's rather impractical to reduce the design to a single PCBA.
The conventional wisdom is that ...
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