Protecting absorption refrigerators PCB
The last few years during the storm season I've been having issues with my refrigerator (Norcold N641) not working temporarily. At first I thought there was something wrong with the PCB as the frig...
Forum Discussion
The CRC Uerathane Seal Coat description shows
Electrical & Electonic insulator, Flexible, non-conductive polyurethane film
So I guess it's considered to be a polyurethane film. I'm uncertain why it's labeled Uerathane as there are differences between the two. Such as e.g. a polyurethane takes longer to dry than a urethane.
Anyway I would want a product that's been tested specifically to use with electronic circuit boards and comes with a temperature rating.
Silicon based Conformal coatings have a higher (and perhaps lower) temperature ratings than urethane/ polyurethane coatings , which usually have better resistance to various types of chemicals.
So if an area has high temperatures or the circuity reaches higher temps above ~250 F probably a Silicon based Conformal Coating would most likely be a better choice.
The absorption refrigerator's cooling unit I don't think would ever reach 250 deg F. so a Urethane/Polyurethane coating should work just fine.
I guess for some applications a coatings thickness can become an issue so one type may be better than another for more specific applications. I remember reading somewhere there are basically 5 types of conformal coatings which includes Urethane/polyurethane.
Electrical & Electonic insulator, Flexible, non-conductive polyurethane film
So I guess it's considered to be a polyurethane film. I'm uncertain why it's labeled Uerathane as there are differences between the two. Such as e.g. a polyurethane takes longer to dry than a urethane.
Anyway I would want a product that's been tested specifically to use with electronic circuit boards and comes with a temperature rating.
Silicon based Conformal coatings have a higher (and perhaps lower) temperature ratings than urethane/ polyurethane coatings , which usually have better resistance to various types of chemicals.
So if an area has high temperatures or the circuity reaches higher temps above ~250 F probably a Silicon based Conformal Coating would most likely be a better choice.
The absorption refrigerator's cooling unit I don't think would ever reach 250 deg F. so a Urethane/Polyurethane coating should work just fine.
I guess for some applications a coatings thickness can become an issue so one type may be better than another for more specific applications. I remember reading somewhere there are basically 5 types of conformal coatings which includes Urethane/polyurethane.
