DOWSIL ME-4131
Harmonization Code : 3910.00.00.90 | Silicones in Primary Forms; Others
Main features
- One-Part Clear Addition-Cure Silicone Coating for Die Coating
- 6,575 cP Application Viscosity
- 19 kV/mm Dielectric Strength
Product Description
DOWSIL™ ME-4131 Encapsulant Clear is a one-part, clear addition-cure silicone elastomer coating for die coating and wire-bond packaging. The ready-to-use microelectronics-grade material requires no mixing and is documented for manual or automated dispensing. Typical as-supplied viscosity is 6,575 cP, with a heat-cure condition of 120 minutes at 150°C and nine-month shelf life under cold storage. After cure, the material provides low modulus, optical clarity, electrical insulation, controlled ionic impurities, and stress absorption for microelectronic and discrete-device protection.
Key features
- Ready-to-use one-part coating: The clear addition-cure silicone requires no mixing.
- Microelectronics-grade purity: Typical ionic impurity data include 0.2 ppm Na+, 0.4 ppm K+, and 2.1 ppm Cl-.
- Electrical and optical properties: Typical cured data include 19 kV/mm dielectric strength and a 1.41 refractive index.
Applications / Suitable for
- Die coating for wire-bond packaging
- Microelectronic device protection
- Discrete-device and optical packaging
TDS, SDS & Technical Documents
Technical Specifications
No specifications available.
Additional Information
As-supplied / before-processing properties
Typical as-supplied or mixed-state values unless otherwise stated. These values are not sales specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Product form | One-part silicone coating | N/A | As supplied |
| Color | Clear | N/A | As supplied |
| Viscosity | 6,575 | cP | Typical |
| Specific gravity | 1.04 | N/A | Typical |
| Shelf life | 9 | months | At -25°C to -10°C |
| Heat-cure condition | 120 | min | At 150°C |
After-processing / final-state properties
Typical final-state values under the stated system and test conditions. These values are not sales specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Hardness | 31 | Shore A | Typical cured value |
| Refractive index | 1.41 | N/A | Typical cured value |
| Dielectric strength | 19 | kV/mm | Typical cured value |
| Volume resistivity | 1.4 × 10¹⁵ | ohm·cm | Typical cured value |
| Linear coefficient of thermal expansion | 350 | ppm/°C | TMA |
| Sodium impurity | 0.2 | ppm | Na+ |
| Potassium impurity | 0.4 | ppm | K+ |
| Chloride impurity | 2.1 | ppm | Cl- |
