Item Name: Shin-Etsu KE-1204 A/B
Manufacturer: Shin-Etsu Silicones of America, Inc.
Technologies: Silicone potting encapsulant
Color: Reddish Brown
Cure Type: Addition, heat cure
Package Size: Contact to Techniq VN for details.
Shelf Life: Contact to Techniq VN for details.
1. Product Overview
Shin-Etsu KE-1204 A/B is a UL 94 V-0 rated, two-component, heat-cure silicone potting encapsulant. It cures into a durable, flexible rubber that provides superior protection for electronic components. The product offers excellent high-temperature resistance (up to 260 °C intermittent), reliable electrical insulation, strong adhesion to various substrates (PCB, metals, plastics, glass, ceramics), and a fast curing profile.
2. Applications
Potting and protecting electronic components
Providing electrical isolation in high-reliability environments
3. Typical Properties
| Property | Value |
|---|---|
| Type | Potting Encapsulant |
| Cure Type | Addition |
| Components | Two |
| UL Listing | Yes (UL 94 V-0) |
| Low Molecular Weight Siloxane | Stripped (Yes) |
| Color | Reddish Brown |
| Density @ 23°C (g/cm³) | 1.54 |
| Viscosity A (cps) | 5000 |
| Mix Ratio by Weight | 100:100 (1:1) |
| Cure Conditions | 15 min @ 100 °C |
| Working Time | 8 hours |
| Shore A Hardness | 70 |
| Tensile Strength (MPa) | 3.50 |
| Elongation (%) | 70 |
| Volume Resistivity (TΩ·m) | 2 |
| Dielectric Strength (kV/mm) | 27 |
| Dielectric Constant | 3.2 @ 50 Hz |
| Dielectric Dissipation Factor | 1 × 10⁻³ @ 50 Hz |
| Thermal Conductivity (W/m·K) | 0.30 |
| Usable Temperature Range (°C) | -40 to +200 (up to 260 intermittent) |
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