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.

 

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Acrylics
LOCTITE STYCAST PC 62
LOCTITE AA 3900 (aerosol can)

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Urethane Acrylates
LOCTITE STYCAST PC 40-UMF
LOCTITE STYCAST UV 7993

Process Flow For Conformal Coating Materials

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TECHNOMELT AS8998

 

Dispensible, no-cure peelable mask for conformal coating

LEARN MORE

Resources for Conformal Coating

Brochure: Printed Circuit Board Protection

Brochure: Technomelt AS 8998

Whitepaper: Peeling off the Mask. Automated Dispensable, Peelable Electronics Masking Solution

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