Questions tagged [conformal-coating]
Conformal coating is an insulating material applied to PCBs to protect against damage to the electronics. You can use this tag for questions about protecting PCBs with conformal coating and for issues with debugging/editing PCBs which have already been conformal coated.
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Difficulty in gaining Class II CE certification for an aluminium single-sided PCB
We have a product that consists of an aluminium single-sided PCB with micro-controller and LEDs soldered to the copper side. The PCBA is shaped so that it can be bent to fit over the scalp of the user ...
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Can I treat the thermal shock test temperature as the continuous operating temperature of a conformal coating?
We are using this conformal coating on our design, HumiSeal 1B73EPA.
However, it does not state in the datasheet the continuous operating temperature for the coating, only the thermal shock test ...
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Can I use clear acrylic spray paint as conformal coating?
I have some electronics that are to be installed in a very damp location: an underground potable water pump station. This station is an underground concrete vault with some pumps and related ...
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How to handle masked areas of a conformally coated board?
If I'm designing a board which will be exposed to humidity, temperature swings below dew point, etc and I decide to conformally coat the board to help protect it. How should you treat areas that need ...
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What can cause dust to stick to only one spot on a PCB?
A field PCB got returned due to not accepting a firmware update. Upon inspection, the board has a small area between some ICs and resistors that has a large buildup of dust while the rest of the board ...
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Rework with a coating over the solder joint
I've got a simple board to repair (a switch/junction board for a fancy bike light). The wires to a DC connector broke because of insufficient strain relief.
It's a trivial job, except there's a paint-...
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Conformal Coating Shielded RF Module
Re: Conformal coating of shielded RF modules
I have an IoT device that consists of a PCB that goes inside a watertight enclosure. The device will operate under constant water, since it will be ...
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Conformal Coating on Raspberry Pi
I'm planning to build a security camera with a Raspberry Pi 4B in it with the camera being an IR camera I found online. Being a security camera, I'm planning to put it outside my house. Where I live ...
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Plastik 70 coating increased current usage
I have a well tested PCB which uses 12µA in sleep mode. I decided to apply conformal coating.
I must say I was a bit liberal with the spray (Plastik 70.)
I waited around 30 minutes before checking ...
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Humidity design requirements
I have to design a electronics device that is specified for environmental operating conditions of 0°C to 60°C with 5% to 95% relative humidity (non condensing).
I think the temperature part should be ...
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PCB conformal coating / potting / resin in an IP65 case
I'm designing a PCB that will be installed in an IP65 plastic case.
The device will be installed in multiple scenarios and regions (indoors, outdoors, high/lo temperatures, high/lo humidity etc).
The ...
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Can USB head cause a spark?
I made a USB port in a gas detector prototype. I plan to keep a USB cable attached to that USB port forever. I silicone conformal coated the USB port pins on the PCB.
Can the USB head of the cable ...
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What motherboard components can I safely conformally coat and will this prevent condensation damage?
I plan on building and installing a small computer in my car for multimedia purposes. Since the only space I have for it is under the passenger seat and since the temperatures vary between -20 to 35+ ...
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Conformal coating of UHF (radio frequency) circuitry 400 - 1000 MHz
Do you have experience applying conformal coating on UHF circuitry (ISM band)?
Are there known issues (e.g. degradation of UHF performance) which arise when coating UHF components like filters and ...
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What type of conformal coating must I use and where must it be applied over the PCB?
I have designed the layout of a PCB that will have an unique area with crimpage terminal connectors receiving 6KV by an external wire. I have done the shortest polygon (instead traces) for 9 PCB ...
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