DOLPHS SYNTHITE AC-43 5 l clear electrical insulating varnish class H

DOLPHS SYNTHITE AC-43 5 l clear electrical insulating varnish for PCB and windings

DOLPHS SYNTHITE AC-43 5 l is a clear air-drying electrical insulating varnish based on modified polyester. The product forms a hard, flexible and clean protective coating on electrical and electronic components. It is suitable where electrical insulation protection is needed without applying a strongly coloured film.

AC-43 is used for protecting and impregnating components such as printed circuit boards, stators, coils, transformers, resistors and capacitors. Thanks to fast air drying and application by brush, dipping or spraying, it fits both service work and production processes.

Application of DOLPHS SYNTHITE AC-43

The varnish is used as a clear protective and electrical insulating coating for components operating in electrical and electronic systems. It helps protect surfaces against moisture, chemical agents and corrosion while maintaining good adhesion and penetration.

Typical applications include printed circuit boards, stators, coils, form wound coils, transformers, resistors, capacitors and other components requiring a clear protective coating with electrical insulating properties.

What makes DOLPHS SYNTHITE AC-43 5 l different

The key advantage of this product is the combination of fast drying, a clear coating and high-temperature resistance. The varnish forms a film with very good hardness and flexibility, which is important for components exposed to thermal load, vibration or moisture.

DOLPHS SYNTHITE AC-43 can be applied by dipping, brush or spraying. For applications requiring a faster process, oven drying can also be used according to the manufacturer’s recommendations.

When to choose DOLPHS SYNTHITE AC-43

This varnish is a good choice when a clear electrical insulating coating is required for electrical or electronic components. It is particularly suitable when thermal class H, fast drying, good penetration and chemical resistance are important.

Important notes before use

Before application, the surface should be clean, dry and prepared according to the process requirements. The product may be applied by dipping, brush or spraying. For fast conveyor dipping processes, the manufacturer indicates that the varnish may be diluted by 10-15% using DOLPHS T-200 thinner.

Technical data of DOLPHS SYNTHITE AC-43 5 l

Storage

Store the product in a closed container, in a cool and dry place, away from direct sunlight. The manufacturer indicates storage in closed containers for up to 36 months at a maximum temperature of 30°C.

FAQ

Is DOLPHS SYNTHITE AC-43 suitable for PCB protection?

Yes. The indicated applications for SYNTHITE AC-43 include printed circuit boards. The product forms a clear protective coating with electrical insulating properties.

Is this varnish clear?

Yes. DOLPHS SYNTHITE AC-43 is a clear varnish, which makes it suitable where the protective coating should not cover components or markings.

Can DOLPHS SYNTHITE AC-43 be applied by brush?

Yes. The manufacturer indicates application by dipping, brush or spraying. The method should be selected according to the component, process and required coating thickness.

Can the varnish be oven dried?

Yes. The product air dries, but oven drying is also possible. The manufacturer indicates that drying for 20-30 minutes at 150°C provides a film with optimum toughness and bond strength.

How does AC-43 differ from red ER varnishes?

AC-43 is a clear varnish. Red ER varnishes are selected where the coating should remain visible for inspection. Selection should be based not only on colour, but also on thermal class, application and process requirements.

DOLPHS SYNTHITE AC-43 5 l is a good choice for clear protection of electrical and electronic components when a fast air-drying class H electrical insulating coating is required.