Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Technologies
- Product Families
Features & Benefits
- Labeling Claims
- Ready-to-Use Product Features
- Key Attributes
- Super-fast cure—tack free in about 3 min; dries in 30 min at 65 °C [149 °F]
- Protects electronics from moisture, corrosion, fungus, and static discharges
- No Hazardous Air Pollutants—free of toluene or xylene, free of ozone depletion compounds
- Excellent finish—smooth, homogeneous, and durable crystal clear coat
- Easy to inspect—fluoresces under UV light
- Easy rework and repairs—can solder through coat, removable with 435 thinner
Applications & Uses
- Markets
- Application Method
- Application Instructions
Spray Equipment
The spray gun recommendations below are based on generic paint guns and may vary by brands. Consult your spray gun manufacturer’s guide.Initial Setting Recommendations
Air Cap HVLP (high volume, low pressure) or LVMP (low volume, medium pressure) Pressure Inlet: 23 psi, Air flow: 13.5 SCFM (Standard cubic foot per minute), Air cap: 10-15 psi Fluid Tip 0.8–1.3 mm - Compatibility
The 419C adheres to most plastics and metals used to house printed circuit assemblies; however, it is not compatible with contaminants like water, oil, or greasy flux residues that may affect adhesion. If contamination is present, first clean the surface to be coated with MG Chemicals 824 Isopropyl alcohol.
Attention! Do not use on thin plastics or plastics where you want to keep original surface. The product contains a controlled amount of solvents designed to chemically etch plastic surfaces to help adhesion.
Properties
- Flame Rating
- Physical Form
- Environmental Properties
- Mechanical Properties
- Typical Properties
- Thermal Properties
- Grease Properties
- Flammability
- Cured Properties
- Temperature Properties
- Uncured Properties
- Typical Properties Note
- a) Estimate based on a coat thickness of 25 μm [1.0 mil] and 65% transfer efficiency.
- Cure Instructions
Room temperature cure:
- Let cure at room temperature for 24 h.
Heat cure:
- Put in oven at 65 °C [149 °F] for 30 min.
- Note
- See Appendix A for UL 94 V-0 and IPC-CC-830B standards test results.
- a) Coefficient of Thermal Expansion (CTE) units are in ppm/°C = in/in/°C × 10-6 = unit/unit/°C × 10-6.
- Thermal Properties Note
- See Appendix A for UL 94 V-0 and IPC-CC-830B standards test results.
| Value | Units | Test Method / Conditions | |
| Cross-Hatch Adhesion | 5B = 0area removed | — | ASTM D3359-2009 |
| Visual Color, Unwashed Area | No change | — | ASTM D1729-96 |
| Cracking, Unwashed Area | None | — | ASTM D661-93 |
| Peeling, Unwashed Area | None | — | ASTM D1729-96 |
| Value | Units | Test Method / Conditions | |
| Pencil Hardness (ABS) | B, soft | — | ASTM D 3363 |
| Value | Units | Test Method / Conditions | |
| Flexibility | Excellent | — | IPC-TM-650 2.4.5.1 |
| Fungus Resistance | Excellent | — | IPC-TM-650 2.6.1.1 |
| Solderability | Excellent | — | — |
| Theoretical Coverage per US Gallon ⁽ᵃ⁾ | max. 325000 (max. 50000 ) | cm2 (in2) | — |
| Theoretical Coverage per Litre ⁽ᵃ⁾ | max. 85000 (max. 1300) | cm2 (in2) | — |
| Recoat Time | 2 | minute | — |
| Full Cure (at 22 °C, 72 °F) | 24 | hour | — |
| Full Cure (at 65 °C , 149 °F) | 30 | minute | — |
| Value | Units | Test Method / Conditions | |
| CTE (Prior Tg) ⁽ᵃ⁾ | 190 (374) | °C(°F) | ASTM E 831 |
| Glass Transition Temperature (Tg) | 46 (115) | °C(°F) | ASTM E 831 |
| Value | Units | Test Method / Conditions | |
| Weather Resistance | Excellent | — | — |
| Value | Units | Test Method / Conditions | |
| Flammability (V-0) | 94 | — | UL registered |
| Value | Units | Test Method / Conditions | |
| Dielectric Withstand Voltage | min. 1500 (min. 1.5) | V (kV) | per IPC-TM-650 |
| Dielectric Strength at (0.9 mil) | 1 450 (57.1) | V/mil (kV/mm) | ASTM D 149 |
| Insulation Resistance (after 24 h) | 5 x 10¹² | Ω | IPC-TM-650 Test 2.6.3.4 |
| Value | Units | Test Method / Conditions | |
| Storage Temperature Limits | -5 to 40 (23 to 104) | °C(°F) | — |
| Constant Service Temperature | -65 to 125 (-85 to 257) | °C(°F) | — |
| Value | Units | Test Method / Conditions | |
| Odor | Ethereal | — | — |
| Boiling Point | min. 56 (min. 133) | °C(°F) | — |
| Viscosity (at 23 °C, 73 °F) | min. 7 (min. 0.007) | cP (Pa·s) | Brookfield SP1 |
| Density | 0.88 | g/mL | MIL-STD-45662A |
| Solid Content | 17 | % | — |
| Tack Free | 3-5 | minute | — |
| Flash Point | -17 (1.4) | °C(°F) | Closed cup |
| Breakdown Voltage (at 0.9 mil) | 1 280 (1.28) | V (kV) | ASTM D 149 |
Regulatory & Compliance
- Certifications & Compliance
- Chemical Inventories
- Quality Standards
- Certified
- Certified UL 94 V-0 (File # E203094)
- Externally Qualified to IPC-CC-830B by Pacific Testing Laboratories
Technical Details & Test Data
- Test Data
- Stir the coating gently but thoroughly.
- Spray a test pattern to ensure good flow quality.
- At an approximate distance of 20–25 cm (8–10 in), tilt the board 45° from a vertical position and spray a thin and even coat. Use spray-and-release strokes with an even motion to avoid excess paint in one spot. Start and end each stroke off the surface.
- Wait 2 min before applying another coat to avoid trapping solvent.
- Rotate the board 90° and spray again to ensure good coverage.
- Apply other coats until desired thickness is achieved (go to step 3).
- Let dry for 2 min at room temperature before heat cure.
Touch up by brushing:
- Stir the coating gently but thoroughly.
- Use a brush apply a small amount to touch up.
Dip coating:
Use a Ford or Zahn cup to monitor the viscosity of the coating as the solvent will evaporate over time.- Hang the PCB on a dipping arm.
- Slowly lower the PCB into a tank and leave immersed in the coating for 2 min to allow penetration.
- Slowly withdraw the PCB from the tank at an approximate rate of 6"/min.
- Let dry to tack free finish before applying additional coats or heat cure.
Selective coating: Custom blended solutions are available and have been verified for use with selective coating machines using both non-atomised and film coating applicators. To inquire about a custom solution tailored to your equipment, contact MG Chemicals’ Technical Support for assistance.
Safety & Health
- Health and Safety
- Please see the 419C-Liquid Safety Data Sheet (SDS) for further details on transportation, storage, handling, safety guidelines, and regulatory compliance.
Packaging & Availability
- Packaging Type
- Packaging Information
Cat. No. Packaging Net Volume Net Weight Packaged Weight 419C-340G Aerosol 446 mL [15.0 fl oz] 340 g [11.9 oz] 4.60 kg [10.1 lb] (Case pack of 10) 419C-1L Can 945 mL [1.99 pt] 825 g [1.82 lb] 1.02 kg [2.10 lb] (Case pack of 5) 419C-4L Can 3.78 L [1.00 gal] 3.30 kg [7.28 lb] 4.00 kg [8.82 lb] 419C-20L Can 18.9 L [5.04 gal] 16.5 kg [36.4 lb] Not available
Storage & Handling
- Shelf Life
- 5 Years
- Storage
- Store between -5 and 40 °C [23 and 104 °F] in a dry area, away from sunlight.