Parylene Conformal Coating

Dimer C Parylene Conformal Coatings

Parylene C is the second most common polymer coating. Produced from the same materials as Parylene N, this dimer contains chlorine which offers excellent dielectric and physical properties.

Strengths

• Most efficacy for value
• Faster rate of deposition than Parylene N with thicker coating in less time
• Dielectric protection at 5k volts per 1 mil coating
• Excellent protection from moisture, chemicals, and corrosive gases
• Tensile strength of 10,000 psi

Weaknesses

• Batch processing only
• Hardest coating to rework
• Time required to prepare and mask boards
• Limited UV resistance
• Temperature limit around 120C in the presence of oxygen
• Contains chlorine - cannot be used for medical applications