PCB confirmal coating
High temperature & waterproof PCB coatings
Our conformal coatings protect your electronic printed circuit boards from moisture and contaminants, preventing short circuits and corrosion of conductors and solder joints.

They also minimize dendritic growth and the electro-migration of metal between conductors.

In addition, our 5 conformal coatings protect your circuits and components from abrasion and solvents. Stress-relieving is also provided, as well as protection of the insulation resistance of the circuit board.

Key Conformal Coating Characteristics
  • Conformal Coating should ideally possess as many of the following characteristics as possible: One-part product
  • Low viscosity
  • Spray, dip, select, or flow-coat application options
  • Long pot life
  • Rapid cure, no by-product
  • Sufficient under-component cure
  • Repairability
  • Wide range of operating temperatures
  • Non-toxic
  • Low cost
  • Robust adhesion
Conformal Coating Processing Options

Silicone conformal are easily applied by a variety of methods. A general overview of these processes is given below.

All of the coatings can be applied by the traditional methods of dipping, spraying or simple flow coating.

 

For high volume, spraying or dipping is best. In low volume, simple flow coating can be used. Because of differences in curing mechanisms, special considerations must be made for removal of any solvents present or for curing higher thickness or curing under large area components.

Environmental compliance is globally creating some strong trends. There is a desire to avoid solvents that are frequently seen in non-silicone materials.

This trend has generated a growing interest in the Elastomeric Heat Cure and Elastomeric Room Temperature Cure products. Similarly there has been a growing usage of no-clean fluxes, making the compatibility with the conformal coating and the underlying no-clean residues an issue to be considered.

 


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