EPO-TEK® 353NDP High Temperature Epoxy, Humidity Resistant, Low Outgassing, Heat Cure (4g)

EPO-TEK® 353NDP is a two-component epoxy engineered to provide exceptional resistance to high temperatures and high-humidity environments. Designed to meet the demands of AI and machine learning infrastructure, it is well-suited for Telecom/Datacom applications as well as the aerospace, defense, automotive, and medical industries. This adhesive is available in a 4g packet.

Recommended Cure: 120°C / 1 Hour

Features of 353NDP:

• HI-REL (High Reliability) version of EPO-TEK® 353ND
• Proven 2,000-hour reliability at 85°C/85% RH, supporting 800G and 1.6T high-density systems
• Passes NASA ASTM E595 low outgassing adhesive requirements
• Low viscosity for excellent wicking and wetting in miniature assemblies
• High die shear strength for durable, reliable bonds
• Reasonable pot life that enables low-temperature curing processes
• Amber color change upon cure for visual process verification
• Compliant with Telcordia GR-1221 requirements

Applications:

• Optical, Telecom, and Datacom (Data centers, AI and Machine Learning)
• Electronics assembly
• Aviation
• Defense
• Automotive
• Medical

Physical Properties:

• Color (before cure):
  • Part A: Clear
  • Part B: Amber
• Consistency: Pourable liquid
• Viscosity (23°C) @ 50 rpm: 3,600 cPs
• Glass Transition Temperature, Tg: ≥ 90°C (Dynamic Cure: 20–200°C / ISO 25 Min; Ramp 10–200°C @ 20°C/Min)
• Coefficient of Thermal Expansion (CTE):
  • Below Tg: 52 × 10⁻⁶ in/in/°C
  • Above Tg: 185 × 10⁻⁶ in/in/°C
• Shore D Hardness: 85
• Lap Shear @ 23°C: > 2000 psi
• Die Shear @ 23°C:
  • 38 Kg
  • 32 Kg (after 7d @ 85°C / 85% RH)
  • 15 Kg (after 2000+K433:K435h @ 85°C / 85% RH)
• Degradation Temperature: 410°C
• Weight Loss
  • @ 200°C: 0.09%,
  • @ 250°C: 0.28%
  • @ 300°C: 0.72%
• Suggested Operating Temperature: < 350°C (Intermittent)
• Storage Modulus: 2,213 MPa @ 23°C

Electrical & Thermal Properties

• Volume Resistivity @ 23°C: ≥ 1.8 × 10¹³ Ohm-cm
• Dielectric Constant (1KHz): 3.17
• Dissipation Factor (1KHz): 0.005

Optical Properties @ 23°C

• Spectral Transmission:
  • ≥ 50% @ 550 nm
  • ≥ 95% @ 1100–1600 nm
  • ≥ 98% @ 800–1000 nm
• Refractive Index: 1.569 @ 589 nm

NASA ASTM E595 Outgassing Performance

• Cure Schedule: 150°C - 1 hour
• Total Mass Loss (TML): 0.76%
• Collected Volatile Condensable Material (CVCM): < 0.01%