EPO-TEK 353NDP
Epotek

EPO-TEK 353NDP

Two-component high-temperature humidity-resistant epoxy, 3,600 cPs, Tg ≥90°C, die shear 38 Kg initial / 15 Kg after 2000 hrs at 85°C/85%RH for optical, telecom, HI-REL microelectronics.

Product code: 353NDP
Package size: Contact us for deails
Shelf Life: One year at room temperature (bulk); 6 months at -40°C (syringe)

RoHS Compliant

EPO-TEK 353NDP is a two-component high-temperature and high-humidity resistance epoxy for optical, telecom, datacom, and HI-REL microelectronic packaging. Manufactured by Epoxy Technology, Inc., it retains 15 Kg die shear after 2,000 hours at 85°C/85%RH — demonstrating exceptional long-term humidity resistance. Available as a single-component frozen syringe for automated dispensing.

Features & Benefits

  • Exceptional humidity resistance: 15 Kg die shear retained after 2,000 hrs at 85°C/85%RH
  • High initial die shear of 38 Kg for maximum bond strength in critical semiconductor packages
  • Tg ≥90°C for stable performance in high-temperature environments
  • Multiple fast-cure options: 150°C/1 min to 80°C/30 min for production flexibility
  • High degradation temperature (410°C) for long-term thermal stability
  • Available as single-component frozen syringe for automated production lines

Typical Applications

  • Die attach in HI-REL microelectronics requiring long-term humidity resistance
  • Optical component bonding in telecom and datacom modules
  • Semiconductor packaging subject to 85°C/85%RH reliability testing
  • Hybrid circuit assembly in military and aerospace electronics
Property Value Test Method / Condition
Color (before cure) Part A: Clear, Part B: Amber Visual
Viscosity (23°C @ 50 rpm) 3,600 cPs
Mix Ratio by Weight 10 : 1
Pot Life Bulk ≤3 hrs; Syringe ≤2 hrs
Glass Transition Temp ≥90°C Dynamic Cure
CTE Below Tg 52 × 10⁻⁶ in/in°C
Shore D Hardness 85
Die Shear @ 23°C (initial) 38 Kg
Die Shear after 7d @ 85°C/85%RH 32 Kg
Die Shear after 2000h @ 85°C/85%RH 15 Kg retained
Degradation Temp 410°C
Suggested Operating Temp <350°C (Intermittent)
Recommended Cure 120°C / 1 Hour Alt: 150°C/1 min, 120°C/5 min, 80°C/30 min
📄
Technical Data Sheet
Epotek-353NDP.pdf
↓ Download
📚
Library / Resource File
epo-tek-353ndp-flyer-08-27-25.pdf
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