Holiday Update:
Fiber Optic Center will be closed December 24 and 25.
Due to potential early carrier pickups, PLEASE HAVE ALL ORDERS IN BY NOON ON MONDAY, DECEMBER 23.


We will resume our regular business hours on Thursday, December 26.

Fiber Optic Center will be at Photonics West - Schedule your meeting with a member of the FOC team now

EPO-TEK® 305 Spectrally Transparent Flexible Epoxy, Room Temperature Cure (4g)

ET305-4G

EPO-TEK® 305 Spectrally Transparent, Room Temperature Cure, 2-Part Epoxy, 4 Gram Packet
The EPO-TEK® 305 Epoxy is a two-component, semi-rigid, optical grade epoxy for semiconductor packaging of fiber optics, optoelectronics and medical devices. It is an electrically and thermally insulating epoxy.

Features:
  • Capable of transmitting light in the UV range.
  • Low viscosity, water-like epoxy formulation.
  • Recommended Cure: 65°C / 1 Hour
  • Pot life: 1 Hour
Physical Properties:
  • Consistency: Pourable liquid
  • Viscosity (23°C): 150 - 250 cPs
  • Glass Transition Temperature, Tg: ≥ 35°C (degree Celsius); ≥ 95°F (degree Fahrenheit)
  • Shore D Hardness: 66
  • Coefficient of Thermal Expansion (CTE):
    • Below Tg: 31 x 10-6 in/in°C
    • Above Tg: 148 x 10-6 in/in°C
  • Suggested Operating Temperature: < 200 °C (Intermittent); < 392°F  
Optical Properties:
  • Spectral Transmission:
    • > 67% @ 260 nm
    • > 95% @ 340 nm
    • > 98% @ 400 - 1600 nm
  • Refractive Index: 1.4763 @589 nm
See Datasheet for additional properties and application notes