| About |
|---|
| 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 5°C. APPLICATIONS It is designed for encapsulation of passive devices such as capacitors, inductors, diodes and rectifiers.&& |
| Product Description | |
|---|---|
| Generic | 环氧树脂 |
| Material Status | Commercial: Active |
| Features | Excellent Processability,Antimicrobial properties,Moisture resistance,V-0 |
| Availabilitys | North America |
| Technical Data | |||
|---|---|---|---|
| PHYSICAL | Nominal value | Unit | Test method |
| Density | 1.85 | g/cm³ | |
| Shrinkage rate | 2.0 to 5.0 | ||
| Shrinkage rate | |||
| MD | 0.20 to 0.40 | % | |
| Water absorption rate | |||
| Equilibrium, 50 ℃ | 0.25 | % | |
| IMPACT | Nominal value | Unit | Test method |
|---|---|---|---|
| Impact strength of cantilever beam notch | 27 | J/m |
| THERMAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Glass transition temperature | 175 | ℃ | |
| Linear coefficient of thermal expansion | |||
| MD | |||
| — | 2.5E-5 | cm/cm/℃ | |
| — | 7.0E-5 | cm/cm/℃ | |
| Thermal conductivity coefficient | 0.67 | W/m/K | |
| Hot deformation temperature | 260 | ℃ |
| Electrical performance | Nominal value | Unit | Test method |
|---|---|---|---|
| Surface resistivity | 1.0E+15 | ohms | |
| Volume resistivity | 1.0E+15 | ohms·cm | |
| Dielectric strength | |||
| moist | 14 | kV/mm | |
| Dielectric constant | |||
| 1 kHz | 3.90 | ||
| 1 MHz | 4.30 | ||
| Dissipation factor | |||
| 1 kHz | 0.012 | ||
| 1 MHz | 0.011 | ||
| Arc resistance | 180 | sec | |
| breakdown voltage | |||
| Wet | 56000 | V |
| FLAME CHARACTERISTICS | Nominal value | Unit | Test method |
|---|---|---|---|
| 1.60 mm | V-0 | UL 94 |
| MECHANICAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Babbitt hardness | 65 | ||
| tensile strength | 82.7 | MPa | |
| Bending modulus | 13800 | MPa | |
| bending strength | 103 | MPa | |
| compressive strength | 241 | MPa |
| Process Conditions | |||
|---|---|---|---|
| injection | Nominal value | Unit | Test method |
| Processing (melt) temperature | 150 to 180 | °C | |
| Injection pressure | 3.45 to 55.2 | MPa | |
| Notes |
|---|
| 1. Typical properties: these are not to be construed as specifications. |
| 2. 48 hrs |
| 3. Alpha 1 |
| 4. Alpha 2 |
| 5. Method B (Step-by-Step) |
| 6. Wet |
| 【 Disclaimer 】 Guangzhou Soliao Information Technology Co., Ltd. reserves all rights. The information in this data table was obtained from the manufacturer of the material on soliao.com. Soliao.com makes every effort to ensure the accuracy of this data. However, the search company does not assume any responsibility for the uncertainty and consequences caused to users by these data values and suggestions, and strongly recommends verifying the data values with the material supplier before the final selection of materials. |