Liquid Conformal Coating - Silicone with UV Indicator, UL 94V-0 (File # E203094) - MG Chemicals 422C-55MLCA

MG Chemicals 422C-55MLCA Liquid Silcone Modified Conformal Coating, 55 mL (1.8 fl oz)

422C is a 1-part, acrylic-silicone blend waterproof conformal coating that cures to a durable, flexible and smooth finish. It is easy to apply and can be handled in only 10 minutes. It may be removed with appropriate strippers, or soldered through for repair or rework.

This circuit coating puts minimum stress on components during thermal cycling, making it ideal for applications that involve a wide temperature range. It provides strong protection against moisture, corrosion, fungus, dirt, dust, thermal shock, short circuits, high-voltage arcing, and static discharge.

This circuit board waterproof coating is the best conformal coating where moisture protection, wide range service temperature, and flexibility are required. It works great as a first-person view (fpv) conformal coating and is an excellent choice for waterproofing remote systems, such as drones and remote-control cars.

This product is also available in spray and pen formats.

Features:

• Certified UL94 V-0 (File# E203094)
• Maximum service temperature of 200 °C
• Fast cure – tack free in about 10 min; dries in 20 min at 65 °C [149 °F]
• Fluoresces under UV-A light
• Validated for selective robotic coating equipment
• Corrosion resistant

Download MG 422C-55MLCA MSDS Sheet (.pdf)

Comparison of 422B and 422C Conformal Coatings

MG Chemicals has recently launched its newest addition to the conformal coating product portfolio 422C. This coating is a silicone/acrylic hybrid coating that dries quickly leaving a smooth film that has a wide operating temperature range. It has recently passed certification testing under the UL746E program as a resist coating from 25 to 75µm.

The 422C product was designed to replace the current 422B conformal coating that has been on the market more than 15 years. While we know 422B has been a highly successful product with much positive feedback, the raw materials used to produce the coating have become more expensive over the years so the decision was made to formulate a new product with similar performance and lower costs.

Like 422B, 422C uses a blend of silicone and acrylic polymers that gives both the hardness and finish of an acrylic while providing the high temperature protection afforded by silicone. Both coatings are certified as UL94 V-0 under the UL746E designation and are low viscosity that is ready-to-spray. The table below compares properties of 422B with 422C.

WARNING: California residents click here for Prop 65 warning information on this product.