EP3RR-1

One component epoxy for potting, encapsulation and underfill applications
Key Features
  • Good flow properties
  • Thermally conductive and electrically insulating
  • Can be cast in thicknesses up to 1 inch
  • Withstands 1,000 hours 85°C/85% RH
Typical Properties
Viscosity
10,000-40,000 cps
Cure Schedule
250°F for 20-30 minutes; 300°F for 10-15 minutes
Hardness
80-90 Shore D
Service Temperature Range
-60°F to +350°F
Dielectric Constant
4.5
Dielectric Strength
450 volts/mil
Thermal Conductivity
7-8 BTU•in/(ft²•hr•°F) [1.01-1.15 W/(m•K)]
Volume Resistivity
>10¹⁴ ohm-cm
EP3RR-1 One Part Epoxy
Discuss with a Specialist
(1-2 Business Day Request) Get Technical Data sheet
(Instant Email Delivery) Request Safety Data sheet
(1-2 Business Day Request)
Applications

Bonding

bonding

Encapsulation

encapsulation

Potting

potting

Underfill

underfill
Certifications

Meets EU Directive 2015/863

1,000 Hours at 85°C/85% RH

Packaging

Can

Jar

Syringe

Product Description

Master Bond EP3RR-1 is a one component, free flowing epoxy for high performance potting, encapsulation and underfill applications. It offers high mechanical strength properties, outstanding dimensional stability, good thermal conductivity and easy processing. It doesn’t require any mixing, and has unlimited working life at room temperature. The minimum for curing is 250°F; at that temperature, EP3RR-1 will cure in 20-30 minutes. At 300°F, the cure time is 10-15 minutes.

EP3RR-1 does not contain any solvents or diluents. It bonds well to a wide variety of substrates including metals, ceramics, glass and most plastics. It has good resistance to water, oils and fuels. Although it is thermally conductive, it still retains its electrical insulation properties. The service temperature range is -60°F to 350°F. Its natural color is light yellow; other colors are available upon request. EP3RR-1 is primarily used in microelectronics. It functions as an underfill epoxy and can be use in packaging and assembly applications.

Product Advantages

  • Single component; no mixing needed
  • Unlimited working life at room temperature
  • Highly dimensionally stable
  • Combines thermal conductivity and electrical isolation
  • Can be used as an underfill expoy
  • Castable in thicknesses up to 1 inch
Discuss with a Specialist
(1-2 Business Day Request) Get Technical Data sheet
(Instant Email Delivery) Request Safety Data sheet
(1-2 Business Day Request)
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How to order

Verify Your Product Selection

With thousands of custom formulations available, our expert engineers provide personalized consultation to ensure you select the ideal adhesive. We will follow up with a product and packaging recommendation for your specific application.

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Receive Your Material

Your adhesive will be made to order and shipped to you. Typical lead times are 10-14 business days, with rush options available for urgent orders.

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