EPO-TEK^® 301 Spectrally Transparent Epoxy, Room Temperature Cure (4g)

The EPO-TEK® 301 Low Viscosity Epoxy is a two-component, room temperature curing epoxy featuring excellent optical-mechanical properties. Designed for semiconductor, PCB, and fiber optic and opto-elctronic applications. 4 gram packet.

Features:

• NASA-approved, low outgassing epoxy
• Recommended Cure: 65°C / 2 Hours
• Pot life: 1-2 Hours

Physical Properties:

• Consistency: Pourable liquid
• Viscosity (23°C): 100 - 200 cPs
• Glass Transition Temperature, Tg: ≥ 65°C (degree Celsius); ≥ 149°F (degree Fahrenheit)
• Shore D Hardness: 85
• Coefficient of Thermal Expansion (CTE):
  • Below Tg: 39 x 10^-6 in/in°C
  • Above Tg: 98 x 10^-6 in/in°C
• Suggested Operating Temperature: < 300 °C (Intermittent); < 572°F  

Optical Properties:

• Spectral Transmission:
  • ≥ 99% @ 382-980 nm
  • ≥ 97% @ 980-1,640 nm
  • ≥ 95% @ 1,640-2,040 nm
• Refractive Index: 1.519 @589 nm

See Datasheet for additional properties and application notes