DOWSIL Q1-4010 CONFORMAL COATING
Harmonization Code : 3208.20.90 | Paints and varnishes that are dispersed or dissolved in a non aqueous medium
Main features
- One-Part, Solventless Silicone Coating
- Multiple Supported Application Methods
- UV-Aided Coating Inspection
Product Description
DOWSIL™ Q1-4010 Conformal Coating is a one-part, transparent silicone conformal coating for protecting rigid and flexible circuit boards, printed wiring boards, and assemblies containing sensitive components or fine-pitch designs. The medium-viscosity, solventless material can be applied by dip, spray, brush, flow, or automated pattern coating and uses temperature-controlled heat curing for rapid processing. After cure, it forms a soft, low-stress elastomer with electrical insulation properties. A built-in UV indicator supports visual or automated inspection of coating coverage. The product is listed to IPC-CC-830B and UL 746E, classified UL 94 V-1, and tested to MIL-I-46058C Amendment 7.
Key features
- Rapid heat cure: Typical cure time is 10 minutes after the coating reaches 100°C, with actual time dependent on film thickness, oven type, and board thermal mass.
- Soft silicone protection: Cures to a 33 Shore A, low-stress elastomer with a typical dielectric strength of 23 kV/mm.
- Inspection and qualification support: Contains a UV indicator and carries IPC-CC-830B, UL 746E, UL 94 V-1, and MIL-I-46058C Amendment 7 credentials.
Applications / Suitable for
- Rigid and flexible circuit boards
- Printed wiring boards
- Boards with sensitive components and fine-pitch designs
TDS, SDS & Technical Documents
Technical Specifications
Physical Properties
General Properties
Electrical Properties
Thermal Properties
Additional Information
As-supplied / before-processing properties
Typical as-supplied properties; values are not intended for use in preparing specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Product form | One-part liquid | — | As supplied |
| Color | Transparent | — | As supplied |
| Viscosity | 825 | mPa·s | Typical value; equivalent to 825 cP |
| Non-volatile content | 99 | % | Typical property |
| Shelf life | 12 | months | Stored at 5°C; observe the product-label use-before date |
After-processing / final-state properties
Typical cured-material properties; values are not intended for use in preparing specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Heat-cure time | 10 | minutes | After the coating reaches 100°C; film thickness, oven type, and board thermal mass affect actual time |
| Specific gravity | 1.00 | — | Cured material |
| Hardness | 33 | Shore A | Cured material |
| Unprimed lap-shear adhesion | 130 / 0.9 / 9 | psi / MPa / kg/cm² | Aluminum substrate; unprimed lap-shear test |
| Dielectric strength | 575 / 23 | V/mil / kV/mm | Typical cured-material property; not a working-voltage rating |
| Volume resistivity | 2.11 × 1014 | Ω·cm | Typical cured-material property |
| Dielectric constant | 2.85 / 2.63 | — | At 100 Hz / 100 kHz, respectively |
| Dissipation factor | 0.00271 / 0.0003 | — | At 100 Hz / 100 kHz, respectively |
