DOWSIL 3-4088
Harmonization Code : 8001.20 | Unwrought tin: Tin alloys
Main features
- 4.5-Minute Working Time
- Low-Viscosity Under-Component Flow
- Soft Dielectric Gel Protection
Product Description
DOWSIL 3-4088 Dielectric Gel uses a two-part, 1:1 mix silicone gel to seal and protect devices with delicate electronic components. Matched low component viscosities support flow beneath and around components, while a 4.5-minute working time and 11-minute gel time provide a fast room-temperature process without an oven. The cured gel remains extremely soft and combines a gel hardness of 55 with dielectric strength, dielectric constant and volume-resistivity data for electrical encapsulation evaluation. Manual or automated meter-mix dispensing can be used, with accurate proportioning, complete mixing and air-control practices selected for the assembly geometry.
Key features
- Fast room-temperature gelation: Typical working time is 4.5 minutes with an 11-minute gel time.
- Low-viscosity component flow: Part A and Part B viscosities are 775 and 700 cP.
- Soft electrical encapsulation: Cured gel hardness is 55 with 500 V/mil dielectric strength.
Applications
Sealing and protecting devices and assemblies with delicate electronic components.
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Electrical Properties
Additional Information
As-supplied / before-processing properties
Typical component and mixed-material values. Values are not specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Mix ratio | 1:1 | By weight, Part A to Part B | |
| Part A viscosity | 775 | cP | As supplied |
| Part B viscosity | 700 | cP | As supplied |
| Mixed viscosity | 875 | cP | After 1:1 mixing |
| Working time | 4.5 | min | At 25 deg C; pot life |
| Specific gravity, Part A | 0.97 | Uncured | |
| Specific gravity, Part B | 0.96 | Uncured | |
| Gel time | 11 | min | Typical value |
After-processing / final-state properties
Typical cured-gel electrical and softness properties. Values are not specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Gel hardness | 55 | Typical cured value | |
| Dielectric strength | 500 (19.5) | V/mil (kV/mm) | Typical cured value |
| Dielectric constant | 2.5 | At 100 Hz | |
| Dielectric constant | 2.8 | At 100 kHz | |
| Volume resistivity | 2.0 x 10^13 | ohm cm | Typical cured value |
| Dissipation factor | 0.0025 / 0.0022 | At 100 Hz / 100 kHz |
