EPO-TEK® 353ND High Temperature Epoxy, Heat Cure (2.5g)

The EPO-TEK® 353ND Low Outgassing Optical Epoxy is a two-component, high-temperature epoxy designed for semiconductor, hybrid, fiber optic, and medical applications. Recommended Cure: 150°C (302°F) for 1 Hour. Available in a 2.5g packet.

Features:

• Pot Life: ≤ 3 Hours
• It has an amber color change upon cure.
• Passes NASA low outgassing standard ASTM E595 with proper cure
• Industry standard with high Tg, high strength, superior moisture resistance and excellent reliability
• Designed to meet Telecordia 1221
• Electrically and thermally insulating

Applications:

• Semiconductor:
  • Wafer-to-wafer bonding of CSP
  • Fabrication of MEMS devices
  • Flip chip underfill
• Hybrid:
  • Providing near-hermetic and UHV seals in sensor devices
  • Resisting high-temperature packaging
  • Down-hole petrochemical fiber optic sensors, operating at >200 °C
• Fiber Optic Adhesive:
  • Sealing fiber into ferrules, transmitting light in the 800–1550 nm range
  • Fiber component packaging
  • Adhesive for active alignment of optics
  • Environmental sealing of opto-packages and V-groove arrays
  • Designed to meet Telcordia 1221 standards
• Electronics Assembly:
  • Dielectric layer in capacitor fabrication
  • Laminating PZT ferroelectrics in ultrasound or inkjet devices
  • Impregnating and insulating copper coil windings in motors and inductors
  • Bonding ferrite cores and magnets
  • Structural epoxy in hard-disk drives; bonding SST metals, Kapton, and magnets

Physical Properties:

• Consistency: Pourable liquid
• Viscosity (23°C): 3,000 - 5,000 cPs
• Glass Transition Temperature, Tg: ≥ 90°C (degree Celsius); ≥ 194°F (degree Fahrenheit)
• Coefficient of Thermal Expansion (CTE):
  • Below Tg: 54 x 10^-6 in/in°C
  • Above Tg: 206 x 10^-6 in/in°C
• Shore D Hardness: 85
• Suggested Operating Temperature: < 350 °C (Intermittent); < 662°F 

Optical Properties:

• Spectral Transmission:
  • ≥ 50% @ 550 nm
  • ≥ 95% @ 1100-1600 nm
  • ≥ 98% @ 800-1000 nm
• Refractive Index (uncured): 1.5694 @589 nm

See Datasheet for additional properties and application notes