DOWSIL 1-2620LV
Harmonization Code : 3403.19 | Lubricating Preparations (With 70% or More Petroleum Oils) For Automotive and Other Uses
Main features
- Low-Viscosity Narrow-Gap Coating
- Room-Temperature Moisture Cure
- UV-Aided Automated Inspection
Product Description
DOWSIL 1-2620 Low VOC Conformal Coating is a one-part, translucent, low-viscosity silicone resin solution for protecting rigid and flexible circuit boards. The 350 mPa s coating flows into narrow gaps and spaces and can be applied by spray, brush, flow, dip, or automated pattern coating. It cures with atmospheric moisture at room temperature to a firm, elastoplastic, abrasion-resistant surface; mild heat can reduce tack-free time after adequate solvent flash-off. A UV indicator supports automated inspection. The product is intended for PCB applications that require toughness and abrasion resistance.
Key features
- Low-viscosity gap coverage: The 350 mPa s coating flows into narrow gaps and spaces on PCB assemblies.
- Room-temperature moisture cure: The coating cures without an oven, with optional mild heat acceleration after solvent flash-off.
- UV-aided inspection: A UV indicator supports automated inspection of applied coating.
Applications / Suitable for
- Protective coating for rigid circuit boards
- Protective coating for flexible circuit boards
- PCB system applications requiring toughness and abrasion resistance
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Physical Properties
Electrical Properties
Additional Information
As-supplied / before-processing properties
Typical uncured and tack-free properties; heat-accelerated values require adequate solvent flash-off.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Viscosity | 350 | mPa s | Typical uncured property |
| Specific gravity | 0.88 | Uncured | |
| Tack-free time | 15 | min | 25 deg C |
| Heat-accelerated tack-free time | 5 | min | 60 deg C and 15% RH |
| Typical cure schedule | 10 min room temperature + 10 min at 60 deg C | 3 mil (75 um) coating; after solvent flash-off |
After-processing / final-state properties
Typical cured coating properties; electrical values apply to the cured material.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Cured color | Translucent, clear | Cured coating | |
| Specific gravity | 1.12 | Cured | |
| Durometer | 80 | Shore A | Cured coating |
| Dielectric strength | 400 (16) | V/mil (kV/mm) | Cured coating |
| Volume resistivity | 1.05 x 10^15 | ohm cm | Cured coating |
| Dielectric constant | 2.49 | 100 Hz | |
| Dielectric constant | 2.48 | 100 kHz | |
| Dissipation factor | 0.002 | 100 Hz |
