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Cosmic Epoxy EH21

1 of 25 products in this brand
Cosmic Epoxy EH21 is an iron-filled epoxy molding compound provided in a black granular form. It is well-suited for applications requiring EMI (Electromagnetic Interference) and RFI (Radio-Frequency Interference) shielding. This material can be molded through compression or transfer molding processes to create core rods or to encapsulate surface mount and axial leaded inductors. It offers the advantage of simplifying the molding process by eliminating the need for labor-intensive over/under molding.

Polymer Name: Epoxy Resins & Compounds

Processing Methods: Compression Molding, Transfer Molding

End Uses: Core Rods, Encapsulant, Inductor

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Identification & Functionality

Fillers Included
Plastics & Elastomers Functions
Technologies

Features & Benefits

Key Features

This material flows easily under low pressure and provides good moldability.

Applications & Uses

Plastics & Elastomers End Uses
Plastics & Elastomers Processing Methods
Product Applications

This material is good for EMI / RFI shielding, and can be either compression or transfer molded to fabricate core rods, or to encapsulate surface mount and axial leaded inductors. This single molded compound eliminates the labor intensive over/under molding.

Properties

Color
Physical Form
Electrical Properties
ValueUnitsTest Method / Conditions
Inductance0.073 - 0.083Ls (μH)
Quality Factor1.2 - 1.5
Test Parameter
ValueUnitsTest Method / Conditions
Frequency1.0MHz
Specimen2023-01-16Rod, inches
Wire Size0.008inches
Number of Tums25.0
Processing Information (Molding)
ValueUnitsTest Method / Conditions
Specific Gravity2.1
Bulk Factor2.5
Molding Pressure50 - 800psi
Molding Temperature130 - 180°C
Molding Temperature266 - 350°F
Spiral Range20 - 30inchesEMMI
Recommended Post Cure (at 160 °C)2 - 4hours

Regulatory & Compliance

Certifications & Compliance

Storage & Handling

Shelf Life
6 months
Storage and Shelf life Conditions
Storage Specification Data
Storage Life 5 °C (40 °F),months 6