Conformal Coatings

Cost-effective, process friendly materials for reliable circuit board protection

Smaller, finer-pitch devices and the move to high-volume manufacturing have necessitated the need for better insulation and increased performance between components on the printed circuit board (PCB). This means faster curing, easier dispensing and higher reliability. Historically, the use of PCB protection was only used in industries such as aerospace; however, other markets including automotive and consumer electronics have integrated PCB protection to deliver improved reliability, for waterproofing, to safeguard brand image and IP, or to gain a competitive advantage.

Henkel’s advanced LOCTITE® brand of conformal coating materials protect PCBs and advanced substrates from thermal shock, moisture, corrosive liquids and other adverse environmental conditions, ensuring long product life cycles for harsh marine, automotive, medical and consumer electronics applications. With exceptionally fast cure capability and 100% solvent-free formulations, Henkel’s conformal coatings provide fast processing and are environmentally responsible.

Henkel Conformal Coating Chemistries

Needle dispenses conformal coating on a PCB

PROPERTIES	URETHANE	SILICONE	ACRYLIC	URETHANE ACRYLATE
STRENGTHS	Tough and Flexible	Temperature Resistance	Impact Resistance	Chemical and Abrasion Resistance
OPERATING TEMPERATURE (°C)	-65 to 130 °C	-65 to 200 °C	-65 to 125 °C	-40 to 130 °C
Tg (°C)	Low	Very Low	Medium	Medium
Cure Mechanism	Heat, Room Temperature	UV, Heat, Room Temperature	Heat	UV+Moisture, UV+Heat

Henkel Conformal Coating Push Products by Chemistry

With more than thirty years of conformal coating formulation expertise, Henkel has developed some of the industry’s most trusted and effective products for PCB protection. Our broad portfolio of chemistry platforms, application options, expansive global resources, and advanced materials that safeguard against thermal shock, moisture, corrosive liquids and other harmful conditions help manufacturers improve product reliability and lifetime.