DUROPTIX OE-6370

Harmonization Code : 3907.30.00.40 | Epoxy Mold Compounds containing by weight more than 70 % silicon dioxide

DUROPTIX OE-6370

Main features

  • 1:1 Optical Encapsulant Mixing
  • 100% Transparent Optical Protection
  • 240-Minute 150 deg C Cure

Product Description

DuPont Duroptix™ OE-6370 HF Optical Encapsulant is a colorless, two-part 1:1 mix silicone elastomer designed for LED encapsulation and overmolding applications. Based on a polydimethylsiloxane chemistry, this optical encapsulant combines high transparency, thermal stability, moisture resistance, and adhesion to commonly used LED substrates. The material provides excellent optical clarity with 100% transparency at 450 nm through a 1 mm sample thickness and is formulated to withstand the thermal demands associated with modern LED manufacturing processes. Its fast-curing characteristics and compatibility with standard dispensing and molding equipment support efficient production workflows for LED packaging and protection.

Key features

  • High optical transparency: Delivers 100% transparency at 450 nm (1 mm thickness) for light-transmission-critical LED applications.
  • Fast heat cure: Achieves cure in approximately 240 minutes at 150°C, supporting efficient LED encapsulation processes.
  • Thermally stable silicone elastomer: Provides durability across demanding operating environments and LED package thermal cycles.

Applications / Suitable for

  • LED encapsulation
  • LED package protection
  • Optical encapsulant applications
  • Overmolding processes
Product Family

DUROPTIX OE-6370

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TDS, SDS & Technical Documents

Technical Specifications

General Properties
Color
The color
Clear
Component System
Describes the number of components that must be supplied, mixed, or activated before application or cure.
2
Mix Ratio
The amount of a constituent divided by the total amount of all other constituents in a mixture
1 : 1
Refractive index
The refractive index determines how much the path of light is bent, or refracted, when entering a material. It is calculated by taking into account the velocity of light in vacuum compared to the velocity of light in the material. The refractive index calculation can be affected by the wavelength of light and the temperature of the material. Even though it is usually reported on standard wavelengths it is advised to check the TDS for the precise test parameters.
1.41

Additional Information

Technical properties

As-supplied / before-processing properties

Representative as-supplied properties for the two-part optical encapsulant system.

Property Value Unit Method / condition
Mix Ratio 1:1 - Two-part system
Color Clear - As supplied
Viscosity (Part A) 6100 cP Part A
Viscosity (Part B) 5300 cP Part B
Mixed Viscosity 5600 cP Mixed material
Shelf Life 12 months Stored at 35°C
Technical properties

After-processing / final-state properties

Representative cured optical and physical properties.

Property Value Unit Method / condition
Heat Cure Time 240 minutes 150°C
Hardness 70 Shore A JIS
Transparency at 450 nm 100 % 1 mm thickness
Refractive Index 1.41 - Typical value
Operational Temperature Range -45 to 200 °C General silicone operating range

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