company tower banner
MG Chemicals Company Logo

MG Chemicals 419E-340G

419E is a 1-part, UL 746E certified, acrylic conformal coating. It cures to a durable, flexible and smooth finish. It is easy to apply and can be handled in 15 minutes. It may be removed with appropriate strippers, or soldered through for repair or rework. 419E creates a robust moisture barrier that protects printed circuit boards in humid environments. It provides strong protection against moisture, corrosion, fungus, dirt, dust, thermal shock, short circuits, high-voltage arcing, and static discharge.

Product Type: 1K (1 component) Coating, Conformal Coating

Features: Anti-Static, Corrosion Resistant, Durable, Excellent Dirt Pick-up Resistance, Excellent Moisture Resistance, Fast Cure, Fast Drying, Flexible, Fungus Resistant, Good Smoothness, Good Surface Finish, Good Weather Stability, High Dust Control, Outdoor Durability, Prevents Static Discharges, Thermal Shock Resistant

Application Method: Spray

Chemical Family: Acrylics & Acrylates

  • TypeDocument Name
View All Documents

Knowde Enhanced TDS

Identification & Functionality

Chemical Family

Features & Benefits

Key Attributes
  • Certified UL 746E (File# E203094)
  • Certified IPC-CC-830C
  • Xylene and toluene free
  • Fluoresces under UV-A light

Applications & Uses

Application Method
Application Instructions

Recommended Preparation

Clean the substrate with Isopropyl Alcohol, MG #824, so the surface is free of oils, dust, and other residues.

Spray

  1. Shake the can vigorously.
  2. Spray a test pattern to ensure good flow quality.
  3. Tilt the board at 45° and spray a thin, even coat from a distance of 20–25 cm (8–10 in). Use spray-andrelease strokes with an even motion to avoid paint buildup in one spot. Start and end each stroke off the surface.
  4. Wait 3 min before applying another coat, to avoid trapping solvent.
  5. Rotate the board 90° and spray again to ensure good coverage.
  6. Apply additional coats until desired thickness is achieved (go to step 3).
  7. Let dry 15 min at room temperature before applying heat cure.
  8. After use, clear the nozzle by inverting the can and briefly spraying until clear propellant comes out.

Cure Instructions

Allow to dry at room temperature for 24 hours, or after letting sit for 15 minutes, cure the coating in an oven at one of these time/temperature options:

Temperature 65 °C 80 °C 100 °C
Time 30 minutes 15 minutes 5 minutes

Properties

Physical Form
Physical Properties
ValueUnitsTest Method / Conditions
Density0.88g/mL
Typical Properties
ValueUnitsTest Method / Conditions
Viscosity (at 25 ˚C)20cP
Calculated VOC828g/L
Cured Properties
ValueUnitsTest Method / Conditions
Resistivity3.5 x 10¹³Ω·cm
Dielectric Strength1 100V/mil
Dielectric Withstand Voltagemin. 1500V
Insulation Resistance1 x 10¹²Ω
Moisture Insulation Resistance1 x 10¹²Ω
Glass Transition Temperature (Tg)38˚C
CTE Prior Tg160ppm/˚C
Service Temperature Range-65 to 130˚C
Uncured Properties
ValueUnitsTest Method / Conditions
Percent Solids7.8%

Regulatory & Compliance

Chemical Inventories

Packaging & Availability

Packaging Type
Packaging and Supporting Products
Cat. No. Packaging Net Volume Net Weight
419E-340G Aerosol 420 mL 340 g

Storage & Handling

Shelf Life
5 Years
Storage

Store between -5 and 40 ˚C in a in a dry area, away from sunlight.