MatWeb - Material Property Data Advertise with MatWeb!     Register Now
Data sheets for over 180,000 metals, plastics, ceramics, and composites.
MatWeb - Material Property Data HOME  •   SEARCH  •   TOOLS  •   SUPPLIERS  •   FOLDERS  •   ABOUT US  •   FAQ  •   LOG IN    
Recently Viewed Materials (most recent at top)  

Login to see your most recently viewed materials here.

Or if you don't have an account with us yet, then click here to register.

  Searches:   Advanced  | Category  | Property  | Metals  | Trade Name  | Manufacturer  | Recently Viewed Materials
  

Chemically Resistant adhesives

Cosmic Plastics E4920D Mineral Filled Epoxy Molding Compound
Categories: Polymer; Thermoset; Epoxy; Epoxy, Encapsulating, Glass or Mineral Filled

Material Notes: Description: Cosmic E4920D is a mineral filled epoxy molding compound which is available either in a granular form, or preformed in a variety of sizes and weights.

Features: It has excellent moisture resistance, thermal cycling stability and outstanding moldability. Parts molded from this material do not support fungus growth. It is available in a wide flow range to suit custom molding requirements. E4920D can be supplied in black, gold, green or red. It has a shelf life of eight months when stored at 50C.

Applications: It is designed for encapsulation of passive devices such as capacitors, inductors, diodes and rectifiers.

Information provided by Cosmic Plastics Inc

Vendors: No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesMetricEnglishComments
Specific Gravity 1.85 g/cc1.85 g/cc
Bulk Factor 2.0 - 5.02.0 - 5.0
Water Absorption 0.25 %
@Temperature 50.0 °C,
Time 173000 sec
0.25 %
@Temperature 122 °F,
Time 48.0 hour
Linear Mold Shrinkage 0.0020 - 0.0040 cm/cm0.0020 - 0.0040 in/in
 
Mechanical PropertiesMetricEnglishComments
Hardness, Barcol 6565
Tensile Strength at Break 82.7 MPa12000 psi
Flexural Strength 103 MPa15000 psi
Flexural Modulus 13.8 GPa2000 ksi
Compressive Strength 241 MPa35000 psi
Izod Impact, Notched 0.267 J/cm0.500 ft-lb/in
 
Electrical PropertiesMetricEnglishComments
Volume Resistivity 1.00e+15 ohm-cm1.00e+15 ohm-cm
Surface Resistance 1.00e+15 ohm1.00e+15 ohm
Dielectric Constant  3.9
@Frequency 1000 Hz
3.9
@Frequency 1000 Hz
Wet
 4.3
@Frequency 1e+6 Hz
4.3
@Frequency 1e+6 Hz
Wet
Dielectric Strength 13.8 kV/mm350 kV/inWet, step by step
Dielectric Breakdown 56 V56 VWet, step by step
Dissipation Factor  0.011
@Frequency 1e+6 Hz
0.011
@Frequency 1e+6 Hz
Wet
 0.012
@Frequency 1000 Hz
0.012
@Frequency 1000 Hz
Wet
Arc Resistance 180 sec180 sec
 
Thermal PropertiesMetricEnglishComments
CTE, linear 25.0 µm/m-°C13.9 µin/in-°FAlpha 1
 70.0 µm/m-°C38.9 µin/in-°FAlpha 2
Thermal Conductivity 0.669 W/m-K4.64 BTU-in/hr-ft²-°F
Heat Distortion Temperature 260 °C500 °F
Glass Transition Temp, Tg 175 °C347 °F
Flammability, UL94 V-0
@Thickness 1.59 mm
V-0
@Thickness 0.0625 in
 
Processing PropertiesMetricEnglishComments
Mold Temperature 150 - 180 °C302 - 356 °F
 
Descriptive Properties
MIL-M-14MECASTM D5948-96
 MEEASTM D5948-96
 MEGASTM D5948-96
 MEHASTM D5948-96
Molding Pressure500-8000 psi

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

Users viewing this material also viewed the following:
Lord Adhesives Thermoset™ ME-542 Underfill Encapsulant
Epoxy Technology EPO-TEK® TD1001 Thermally Conductive Epoxy
DIAB Divinycell® H 200 Sandwich Core Material
Cosmic Plastics FARBOSET® 2460 All Colors Mineral Filled Epoxy Molding Compound
Cosmic Plastics E4940 Mineral & Glass Filled Epoxy Molding Compound, Encapsulating Grade

PCOSM019 / 190801

Chemically Resistant adhesives

Please read our License Agreement regarding materials data and our Privacy Policy. Questions or comments about MatWeb? Please contact us at webmaster@matweb.com. We appreciate your input.

The contents of this web site, the MatWeb logo, and "MatWeb" are Copyright 1996-2024 by MatWeb, LLC. MatWeb is intended for personal, non-commercial use. The contents, results, and technical data from this site may not be reproduced either electronically, photographically or substantively without permission from MatWeb, LLC.