What is the G3 Gas Protection Specification in Conformal coating?
The G3 specification references the ANSI Standard, ANSI/ISA S71.04-1985, “Environmental Conditions for Process Measurement and Control Systems: Airborne Contaminants,” .
The G reference refers to the severity and classification of the test and it can be G1 (Mild, Moderate, Harsh and Severe (G1, G2, G3 and Gx, respectively). The classification directly correlates with the level of corrosive effects in that environment and the standards define or characterise environments in terms of their overall corrosion potential.
Some conformal coatings have been exposed to the test it the different levels and have a pass / fail criteria.
For further information on the different levels of classification, contact us.
Acrylic based conformal coating do pases the G 3 tests is there any requirement to test it or certified for this application
Hello Vinayak
The standard I believe you are talking about is G3 part of ANSI S71.04
Standard: ANSI/ISA S71.04-1985, “Environmental Conditions for Process Measurement and Control Systems: Airborne
Contaminants,”
For G3 this is defined as G3 Harsh <2000 Å An environment is which there is a high probability that corrosive attack will occur. These harsh levels should prompt further evaluation resulting in environmental controls or specially design and packaged equipment.
So, if you are asking if you should evaluate the coating and the system then I would suggest yes to prove it can withstand the process. There are acrylic coatings out there that have passed the test. However, although I am not an expert on the test I believe that you are evaluating both the coating and the system so some caution needs to be applied.
Let me know if I can be of further help.
Where we can test of G3 coating , we want the name of the agency which can test the G3 coating on circuit board
Hello Himanshu can you let me know which part of the world you ate based so I can help determine where you can get the testing completed? Thanks for your time.
Reblogged this on Conformal Coating and commented:
Also it must be realised that you are qualifying a conformal coating and not the process. The G levels are the severity of the attack and the conformal coating is exposed to this.