Encapsulants (or pottants) are protective materials used to completely embed
electronic circuitry. Typically, they are used to isolate circuits from the
harmful effects of moisture and other contaminants, to provide electrical
insulation for high voltages and to protect a circuit and interconnections from
thermal and mechanical stresses. Encapsulants are typically applied in thick
layers exceeding 125 mils. Elastomeric and rubbery, encapsulants can provide
more mechanical protection than gels.
|
If you need a
material:
|
Consider
products:
|
|
To be used in stress-sensitive applications or for vibration isolation
|
With low durometer values; or consider gels
|
|
For use around heat-sensitive components that cannot withstand high cure
temperatures
|
That cure at room temperature or with moderate heat
|
|
For rapid processing
|
With fast cure times
|
|
That will adhere without the need for priming
|
With higher values of unprimed lap shear or peel strength
|
|
With higher strength
|
With higher tensile or tear strength values
|
|
That will fill small spaces
|
With the lowest viscosity values; or, with higher viscosity products, use vacuum during
processing
|
|
To minimize leakage from gaps in modules before curing
|
With higher viscosity values or faster cure times
|
|
To minimize the chance for trapping bubbles
|
With the lowest viscosity values and fill the part on an incline; or, with
higher viscosity products, use vacuum during
processing
|
|
That maintains cured properties at extremely low temperatures
|
Suited for use below –40C
|
|
To assist with heat dissipation
|
With higher filler levels as indicated by higher specific gravity values
|
|
To help tamperproof a module
|
With higher durometer values
|
|
To conceal boards or components within a module
|
That are pigmented or that are highly filled as indicated by high specific
gravity values
|
|
With good optical clarity
|
Designated as “clear”
|
|
With very low levels of outgassing
|
Designated as having “controlled volatility” (CV) properties or as “space
grade”
|
|
Search Using the
Product Finder
|
|
Learn More from the Product
Tutorial
|
|
View the Product Family
Overview
|