Protective lacquers

MG Chemicals has an extensive portfolio of conformal coatings that meet the current challenges of circuit board protection. These products are specially designed to protect circuits from common contaminants such as moisture, dust, chemical fumes, fungi and corrosive gases, thereby extending product life.

With a wide range of chemistries available including acrylic, polyurethane, epoxy, silicone and UV curing, users can find a tailored solution that balances protection needs and processing needs. Our products are available in a variety of viscosities ideal for brush or selective spray applications and are certified to industry leading conformal coating standards such as IPC-CC-830C and UL746E. Browse our available products and contact our technical support staff to determine which product is right for you.

What are conformal coatings?
Conformal Coatings are clear, flexible top coats that conform to the intricate geometries of printed circuit boards. They are applied over circuit boards to make them more robust and thereby increase product life.

Types of Conformal Coating Materials
There are currently eight different families of conformal coatings identified in the IPC-CC-830C standard. These include acrylic, polyurethane, silicone, epoxy, UV curable, parylene, ultra thin, and styrenated block copolymer types.

How are conformal coatings used?
Conformal coatings are used to extend the life of printed circuit boards by providing a protective layer against common environmental elements such as moisture, dust, dirt and fungus. These coatings have excellent dielectric properties that prevent flashover, allowing traces to be placed closer together, thereby facilitating the design of smaller, higher-performance electronic components.

Conformal Coating Standards
There are two main standards for conformal coatings: UL746E and IPC-CC-830. The UL746E compliant coating standard includes a series of dielectric tests that measure the coating's insulating properties after environmental exposure, as well as its flame retardancy. The IPC-CC-830 standard was created by the Institute for Printed Circuits (IPC) to replace the MIL-I-46058C standard, which was declared inactive in 1998. This standard tests the coating's resistance to thermal shock, hydrolytic aging, moisture saturation, fungal resistance, and flame retardancy.

Features and Benefits
• Clear, thin, flexible and durable
• Protects against dust, moisture, salt spray,
Corrosion and chemical mists
• Protects against electric arc, short circuit, static charge
discharges and thermal shocks
• Contains a UV indicator for visual inspection
• Application by brush, dipping, and manual
selective spraying
• Available in liquid, aerosol and pen
• IPC and UL certified versions

Applications
• Improves reliability and extends the life of
electronic switch
• Protects circuits in coastal, tropical, marine and
other humid environments
• Allows the operation of electronic devices in harsh
environments
• Allows tracks to be chained together
prevent

Acrylic - One-piece protective coating that
inexpensive and easy to rework.
419D - IPC-CC-830B and UL94 V-0 certified
419E - Certified to IPC-CC-830C and UL746E
Silicone Modified Acrylic - One piece
conformal coating that is both soft and flexible, and
offers a wide operating temperature range.
422C - Certified to UL94 V-0
Polyurethane - One-piece protective coating
which offers strong protection against solvents,
and corrosive gases.
4223F - Certified to IPC-CC-830B and UL746E
Epoxy - Two component protective coating that
flexible and offers strong protection against
chemicals.
4225 - Certified to IPC-CC-830C
UV Curable - One piece UV curable, conformal
Coating suitable for high throughput applications.
4200UV - Certified to IPC-CC-830C and UL746E