MG Chemicals 422C-340G Silicone Conformal Coating, 12 oz Aerosol
The MG Chemicals 422C-340G is a one-part, acrylic-silicone blend conformal coating designed to protect printed circuit boards (PCBs) and electronic components from environmental hazards. Packaged in a convenient 12 oz (340 g) aerosol can, this coating cures to a durable, flexible, and smooth finish, ensuring reliable performance in various applications.
Key Features:
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Composition: Acrylic-silicone blend
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Cure Time: Tack-free in approximately 10 minutes
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Service Temperature Range: -40°C to 200°C
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Certification: UL94 V-0 (File# E203094)
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Fluorescence: Contains UV tracer for easy inspection
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Corrosion Resistance: Protects against moisture, corrosion, fungus, dirt, dust, thermal shock, short circuits, high-voltage arcing, and static discharge
Specifications:
| Parameter |
Details |
| Net Volume |
406 mL |
| Net Weight |
340 g |
| Viscosity @ 25°C |
14 cP |
| Density |
0.92 g/mL |
| Percent Solids |
30% |
| Dry Time to Handle |
10 minutes (1 coat) |
| Recommended Film Thickness |
25–75 µm |
| Theoretical Coverage @ 25 µm |
7,200 cm² |
Application Instructions:
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Surface Preparation: Ensure the substrate is clean by removing oils, dust, and residues using Isopropyl Alcohol.
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Application:
- Shake the aerosol can vigorously before use.
- Spray a test pattern to confirm proper flow.
- Hold the can 20–25 cm (8–10 inches) from the surface and apply a thin, even coat.
- Allow 10 minutes for the first coat to dry before applying additional coats if necessary.
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Curing: The coating becomes tack-free in about 10 minutes and fully dries in 20 minutes at 65°C (149°F).
For rework or repair, the 422C-340G coating can be removed using MG Chemicals' 8309 or 8310A conformal coating removers, or it can be soldered through directly.
Tri-Tek Electronics, an authorized distributor of MG Chemicals products, offers the 422C-340G Silicone Conformal Coating with full manufacturer warranty coverage. We ensure competitive pricing and direct access to factory support. Visit our retail location in Mesa, AZ, or contact us for more information.
