Epoxies, Ect. 40-3900

Category: Epoxy , Epoxy; Epoxide
Manufacturer: Epoxies, Etc.
Trademark: Epoxies, Ect.
Fillers: -
Ports: Qinzhou, Shekou, Shanghai, Ningbo
Delivery Terms FOB, CIF, DAP, DAT, DDP
PDF: Mx8kBM_Epoxies-Ect-40-3900.pdf
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40-3900 is a two component epoxy adhesive filled with silver. This electrically conductive epoxy resin formulation offers continuity of conductivity with an electrical resistivity value of less than 1x10^-4 ohm-cm. 40-3900 is also well known for its wide operating temperature range, -50 to + 170°C.

40-3900 is specifically designed for adhesive bonding in microelectronic and optoelectronic applications. Due to its excellent continuity, it has also been used extensively in applications such as micro-wave EMI and RFI shielding, in the assembly or repair of printed circuit boards, wave guides, electronic modules, flat cable, high frequency shields, connectors, circuitry, and as a cold solder.

40-3900 is formulated with pure silver (no alloys) and is designed in a convenient 1:1 mix ratio. Both the resin and hardener have silver powder dispersed.

Features:
  • Electrically conductive
  • Thermally conductive
  • Room temperature cure
  • Easy 1:1 mix ratio
  • Good bond strength
General Information
Filler / Reinforcement
  • Silver
Features
  • Bondability
  • Electrically Conductive
  • Electromagnetic Shielding (EMI)
  • Good Adhesion
  • Radio Frequency Shielding (RFI)
  • Thermally Conductive
Uses
  • Adhesives
  • Bonding
  • Connectors
  • Electrical/Electronic Applications
  • Printed Circuit Boards
  • Wire & Cable Applications
Appearance
  • Silver
MechanicalNominal ValueUnit
Flexural Strength 70.3MPa
ThermalNominal ValueUnit
Thermal Conductivity 7.9W/m/K
Additional InformationNominal ValueUnit
Operating Temperature -50.0 to 170°C
Uncured PropertiesNominal ValueUnit
Color Silver
Mix Ratio by Weight (PBW)
    Part A 1.0
    Part B 1.0
Density
    25°C 11.80g/cm³
    25°C 22.97g/cm³
Curing Time
    90°C 0.25hr
    65°C 1.0hr
    25°C 24hr
Pot Life 3(25°C)60min
Shelf Life 12month
Cured PropertiesNominal ValueUnit
Shore Hardness (Shore D)70
Lap Shear Strength 44.83MPa
Volume Resistivity 1.0E-4ohms·cm
Note Message
1 .Part B
2 .Part A
3 .100 grams
4 .Al to Al
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