Brand Name: DOWSIL™ 1-2620 Low VOC Conformal Coating
Package Size: Available in 3 kg/pails and 15 kg/ pails.
Shelf Life:12 months from the date of manufacture.
DOWSIL™ 1-2620 Low VOC Conformal Coating is a one-part, transparent, low-viscosity silicone resin solution designed to protect electronic components. This solvent-borne resin coating cures at room temperature, forming a tough, elastoplastic, and abrasion-resistant surface. It features a UV indicator for automated inspection and meets several industry standards, including UL 94 V-0 flammability rating, UL 746E recognition, IPC-CC-830 approval, and Mil-I-46058C approval. The low VOC formulation offers reduced odor and may simplify emissions recovery in certain regions.
Applications
This conformal coating is suitable for use as a protective layer for both rigid and flexible circuit boards. It is particularly beneficial in PCB system applications that require enhanced toughness and abrasion resistance. The low viscosity of the coating allows it to flow easily into narrow gaps and spaces, ensuring comprehensive coverage.
Typical Properties
| Property | Unit | Value |
|---|---|---|
| Color (Cured) | – | Translucent (Clear) |
| Viscosity | cP (mPa·s) | 350 |
| Specific Gravity (Uncured) | – | 0.88 |
| Specific Gravity (Cured) | – | 1.12 |
| Tack-Free Time at 25°C | minutes | 15 |
| Tack-Free Time at 60°C/15% RH | minutes | 5 |
| Durometer Hardness | Shore A | 80 |
| Dielectric Strength | volts/mil (kV/mm) | 400 (16) |
| Volume Resistivity | ohm·cm | 1.05 × 10¹⁵ |
| Dielectric Constant at 100 Hz | – | 2.49 |
| Dielectric Constant at 100 kHz | – | 2.48 |
| Dissipation Factor at 100 Hz | – | 0.002 |
| Dissipation Factor at 100 kHz | – | 0.004 |
| Non-Volatile Content (NVC) | % | 31 |
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