Conformal Coating for Medical Electronic Boards

Selective Coating Protection for Medical Device Electronics

Medical device control boards — found in infusion pumps, patient monitors, diagnostic instruments and portable medical equipment — must withstand a distinctive combination of environmental stressors: routine disinfectant wipe-down between patient uses, occasional exposure to biological fluids, and in many care settings, sustained high-humidity conditions. Conformal coating protects these boards from moisture-driven corrosion and disinfectant chemical exposure that would otherwise compromise device reliability, in an application space where board failure carries direct patient-safety consequences.

The dispensing challenge combines standard selective coating precision — achieving complete coverage while excluding connectors, test points and other functional areas — with the additional documentation and process validation rigor medical device manufacturing demands. Coating chemistry must also specifically resist the disinfectant compounds commonly used in clinical environments, which are frequently more aggressive toward coating materials than typical industrial or consumer chemical exposure.

SANCO CCD vision-guided selective dispensing systems, built on our desktop visual dispensing machine platform, generate precise keep-out boundaries directly from board layout data, delivering the selective coverage accuracy and process repeatability required for medical device electronic board conformal coating production.