PERMABOND UV683
Harmonization Code : 3907.30.00.40 | Epoxy Mold Compounds containing by weight more than 70 % silicon dioxide
Main features
- Controlled Doming and Encapsulation
- Rapid Tack-Free UV Cure
- High-Transmittance Cured Coating
Product Description
Permabond UV683 is a colorless UV-curable acrylate coating and doming compound for smart-card microchips and electronic-component encapsulation. Its 1,000 to 1,600 mPa s viscosity at 25 deg C supports doming application, while cure across 320 to 420 nm produces a tack-free surface. Typical tack-free time ranges from 1 to 15 seconds under the listed lamp conditions. The cured coating provides more than 98% light transmittance, 12 to 14 N/mm^2 tensile strength, more than 50% elongation, and 50 to 65 Shore D hardness for optically clear protective applications.
Key features
- Doming-Grade Viscosity: Viscosity is 1,000 to 1,600 mPa s at 25 deg C.
- Rapid Tack-Free Cure: Typical tack-free time is 1 to 15 seconds under the listed lamp conditions.
- High-Transmittance Coating: The cured coating provides more than 98% light transmittance.
Applications
Applications include coating and doming, smart-card microchip coating, and encapsulation of electronic components.
Technical Specifications
No specifications available.
Additional Information
As-supplied / before-processing properties
Fixture time depends on lamp output, distance, and substrate transmission.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Chemical composition | Acrylate | As supplied | |
| Appearance | Colorless | As supplied | |
| Viscosity | 1,000 to 1,600 | mPa s | At 25 deg C |
| Specific gravity | 1.1 | As supplied | |
| Typical fixture time | 1 to 7 | seconds | Listed UV lamp conditions |
| Typical tack-free time | 1 to 15 | seconds | Listed UV lamp conditions |
| Cure wavelength | 320 to 420 | nm | Match lamp output to the photoinitiator |
After-processing / final-state properties
Values are typical cured properties for the stated methods and substrates.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Tensile strength | 12 to 14 | N/mm^2 | ISO 37 |
| Light transmittance | >98 | % | Cured coating |
| Refractive index | >1.490 | Cured coating | |
| Elongation at break | >50 | % | ISO 37 |
| Hardness | 50 to 65 | Shore D | ISO 868 |
| Water absorption | <2 | % | ISO 62; 2 hours in boiling water |
| Glass transition temperature | 55 | deg C | DSC; 20 deg C/min rate |
