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MG Chemicals 419D-340G

Acrylic Conformal Coating 419D is a 1-part acrylic conformal coating that cures to a durable, flexible and smooth finish. It is easy to apply and can be handled in 10 minutes. It may be removed with appropriate strippers, or soldered through for repair or rework. 419D creates a robust moisture barrier that protects printed circuit boards in humid environments. It protects effectively against moisture, corrosion, fungus, dirt, dust, thermal shock, short circuits, high voltage arcing, and static discharge.

Product Type: Conformal Coating

Features: Anti-Static, Corrosion Resistant, Durable, Ease of Handling, Excellent Dirt Pick-up Resistance, Excellent Salt Spray Resistance, Fast Cure, Fast Drying, Flexible, Fungus Resistant, Good Smoothness, Moisture Barrier, Thermal Shock Resistant

Application Method: Spray

Chemical Family: Acrylics & Acrylates

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Knowde Enhanced TDS

Identification & Functionality

Chemical Family
Product Type

Features & Benefits

Labeling Claims
Recommended Preparation
Clean the substrate with Isopropyl Alcohol, MG #824, so the surface is free of oils, dust, and other residues.
Features & Benefits
  • Xylene and toluene free
  • Fluoresces under UV-A light

Applications & Uses

Application Method

Properties

Typical Properties
ValueUnitsTest Method / Conditions
Minimum Recoat Time3minute
Recommended Film Thickness25-75μm
Theoretical Coverage @ 25 μm94020cm2/L
Dry Time To Handle (1 coat)10minute
Dry Time To Handle (2 coats)20minute
Cured Properties
ValueUnitsTest Method / Conditions
Resistivity4.6 x 10¹⁴Ω·cm
CTE Prior Tg72ppm/°C
Dielectric Strength1000V/mil
Dielectric Withstand Voltagemin. 1 500V/mil
Service Temperature Range-65 to 125°C
Insulation Resistance1 x 10¹³Ω
Moisture Insulation Resistance1 x 10¹²Ω
Dielectric Constant (at 1 MHz)2.85
Dissipation Factor (at 1 MHz)0.004
Glass Transition Temperature (Tg)27°C
Uncured Properties
ValueUnitsTest Method / Conditions
Solid Content30%
Calculated VOC654g/L
Viscosity (at 25˚C)115cP
Density0.92g/mL
Cure Instructions

Allow to dry at room temperature for 24 hours, or after letting sit for 10 minutes, cure the coating in an oven at one of these time/temperature options:

Temperature 65 °C 80 °C 100 °C 120 °C
Time 30 min 20 min 10 min 5 min

Regulatory & Compliance

Quality Standards
Certified
  • UL 94 V-0 (File# E203094)
  • IPC-CC-830B

Technical Details & Test Data

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 3 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.

Packaging & Availability

Available Packaging
Cat. No. Packaging Net Vol. Net Wt.
419D-340G Aerosol 410 mL 340 g

Storage & Handling

Shelf Life
5 years
Storage and Handling
Store between -5 and 40 ˚C in a in a dry area, away from sunlight (see SDS).