Cosmic Epoxy E4930R

Category: Epoxy , Epoxy; Epoxide
Manufacturer: Cosmic Plastics, Inc.
Trademark: Cosmic Epoxy
Fillers: -
Ports: Qinzhou, Shekou, Shanghai, Ningbo
Delivery Terms FOB, CIF, DAP, DAT, DDP
PDF: D1MKrM_Cosmic-Epoxy-E4930R.pdf
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DESCRIPTION
Cosmic E4930R is a mineral filled, application specific epoxy molding compound which is supplied in a granular form.

FEATURES
It has excellent moisture resistance and thermal cycling stability. Standard spiral flow range is 30-40" (EMMI) at 160°C and 1000 psi, and a flow duration of 40-50 seconds at 325 - 1000 psi. It has a hot plate gel time of 35-45 seconds at 160°C.

APPLICATIONS
Used to encapsulate optocouplers, capacitors, resistors, resistor networks, transistors, SOIS's and QFP.
General Information
Filler / Reinforcement
  • Mineral
Features
  • Moisture Resistant
Uses
  • Electrical Parts
Forms
  • Granules
Processing Method
  • Encapsulating
PhysicalNominal ValueUnit
Specific Gravity 1.85g/cm³
Bulk Factor 2.0 to 5.0
Molding Shrinkage - Flow 0.20 to 0.40%
Water Absorption 1(Equilibrium, 50°C)0.25%
HardnessNominal ValueUnit
Barcol Hardness 65
MechanicalNominal ValueUnit
Tensile Strength 82.7MPa
Flexural Modulus 13800MPa
Flexural Strength 103MPa
Compressive Strength 193MPa
ImpactNominal ValueUnit
Notched Izod Impact 32J/m
ThermalNominal ValueUnit
Glass Transition Temperature 165°C
CLTE - Flow
    -- 22.5E-5cm/cm/°C
    -- 38.0E-5cm/cm/°C
Thermal Conductivity 1.3W/m/K
Heat Distortion 260°C
ElectricalNominal ValueUnitTest Method
Dielectric Breakdown - Wet 56000V
Surface Resistivity 1.0E+15ohms
Volume Resistivity 1.0E+15ohms·cm
Dielectric Strength 4(Wet)14kV/mm
Dielectric Constant 5
    1 kHz 4.20
    1 MHz 4.50
Dissipation Factor 6
    1 kHz 0.012
    1 MHz 0.011
Arc Resistance 180sec
FlammabilityNominal ValueUnitTest Method
Flame Rating (3.18 mm)V-0UL 94
InjectionNominal ValueUnit
Processing (Melt) Temp 150 to 180°C
Injection Pressure 3.45 to 55.2MPa
Note Message
1 .48 hrs
2 .Alpha 1
3 .Alpha 2
4 .Method B (Step-by-Step)
5 .Wet
6 .Wet
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