Conformal coating

You should be able to obtain a smooth finish. A "glass-like finish" is in part a function of the coating material, assuming good process.

When we see "orange peel" conformal coating, we think moisture from the spray room environment, conpressor, etc. There are other, secondary, causes: * Spraying at high viscosity�s [Ensure proper thinning] * Air pressure too high [Reduce air pressure] * Poor spray technique, such as spraying too far from surface [Move closer to surface]

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What conformal coating are you using - silicone, acrylic, urethane?

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At times the orange peel effect can be from excess flux improperly removed. Our company strictly provides the service of selctive conformal coating application. We quite often see this. Most times if the board is simply "water washed", or IPA washed, this will end the problem. Sometimes the thickness of the coating can be increased if washing is not an option, or apply the coating at a slower speed.

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At times the orange peel effect can be from excess flux improperly removed. Our company strictly provides the service of selctive conformal coating application. We quite often see this. Most times if the board is simply "water washed", or IPA washed, this will end the problem. Sometimes the thickness of the coating can be increased if washing is not an option, or apply the coating at a slower speed.

Maryann

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