What is HumiSeal 1A33?

What is HumiSeal 1A33?

HumiSeal® 1A33 is a single component, polyurethane conformal coating, suitable for general printed circuit board applications. HumiSeal® 1A33 contains no free isocyanates and fluoresces under UV light for inspection purposes.

What is HumiSeal coating?

HumiSeal Products are conformal coatings which are designed to prevent corrosion and degradation of electronic assemblies in circuit boards and automotive electronics control components.

What is urethane conformal coating?

Polyurethanes (Urethane Resin- UR) are polymeric, flexible, insulating, hard and chemically resistant (Acid—Alkali—Salty water) conformal coatings that are used to protect electronic parts from chemical corrosion, oil, moisture, fungus, and static discharges.

What is Parylene C?

Parylene C, a chlorinated poly(para-xylylene) polymer, is widely employed as a biocompatible, corrosion-resistant coating, as a packaging material, and as an optically transparent material.

How thick should conformal coating be?

between 1 to 5 mils
How Thick Should I Apply Conformal Coating? Conformal coatings are generally very thinly applied, which provides the best protection possible, but minimizes heat entrapment, excess weight, and other issues. Typically, conformal coating is applied between 1 to 5 mils (25 to 127 microns).

What is parylene coating made of?

Parylene N: The structure of parylene N is linear, each molecule consisting of a carbon-hydrogen combination. Parylene C: Also a carbon-hydrogen combination, parylene C contains an atom of chlorine in place of one hydrogen atom with each molecule. Parylene C is highly moisture resistant.

What is the purpose of parylene coating?

The Purpose of Conformal Coatings A parylene conformal coating is applied to an electronic PCB that needs protection from exposure to environmental threats such as dust, temperature, and moisture. Conformal coatings can also protect exposition of PCBs in fraught situations.

What conformal coating is best?

Urethane (Polyurethane) Resin (UR) – Urethane conformal coatings are known for their excellent moisture and chemical resistance.

How do you choose conformal coating?

Things to Consider When Choosing a Conformal Coating

  1. Low moisture vapor transmission rate.
  2. Low water absorption.
  3. Corrosion protection.
  4. Good electrical properties, such as dielectric constant, insulation resistance, dissipation factor, and dielectric breakdown voltage.
  5. Low outgassing.