Encapsulation of Electronic Components

Epoxy and acrylate resin based sealing and molding compounds are often used in electronics to protect electronic components, semiconductors and subassemblies. The encapsulation protects components from moisture, dust, dirt and solvents. Used to fill cavities or encapsulate components, sealing compounds also provide effective protection from mechanical stress.

All Panacol sealing compounds are made without solvent and many have a low ionic content of less than 10 ppm Na+, K+, Cl- and Br-. They therefore provide perfect protection from internal corrosion and reduce local voltaic coupling. 

Many sealing compounds are UV-curing, allowing rapid setting in just a few seconds. This makes them suitable for encapsulating components in fully automated high-volume production.
 
Thermally curing sealing compounds, on the other hand, have the advantage of curing even in dark areas that the UV light cannot reach. These encapsulants are also available in black colour for use as a coating or covering. 

A black sealing compound is used to protect mass-produced chips

The table below lists a selection of sealing and molding compounds from Panacol. Further products and custom solutions are available on request.

Sealing Compound Viscosity [mPas] Base Curing* Properties
Structalit® 5800 7,000-15,000 2-part epoxy thermal, room temperature High temperature resistance
short pot life
fast application
Structalit® 5810 2,000-3,000 2-part epoxy thermal
room temperature
Very high adhesion to PC
resistant to moisture and chemicals
Structalit® 5890 300,000-400,000 epoxy thermal black
Structalit® 5891 300,000-400,000 epoxy thermal Black color
fast curing at low temperatures
impact resistant
Structalit® 5891 T 80,000-150,000 epoxy thermal Black color
stable frame mat.
can be applied wet-in-wet with filling material (e.g. Structalit® 5893)
stable edges
resistant to shocks
Structalit® 5892 200,000-300,000 epoxy thermal black
Structalit® 5893 6,000-10,000 epoxy thermal Black color
excellent flow properties
filling material
high resistance to heat and chemicals
certified to ISO 10993-5 standards
Structalit® 5894 45,000-55,000 epoxy thermal Black color
excellent flow properties
filling material
very high resistance to heat and chemicals
Structalit® 8801 30,000-45,000 epoxy thermal Resistant to oils
grease and fuels
excellent flow properties
beige color
certified to ISO 10993-5 standards
Structalit® 8801 black 30,000-45,000 epoxy thermal Resistant to oils
grease and fuels
black color
excellent flow properties
Structalit® 8801 T thixotropic epoxy thermal Resistant to oils
grease and fuels
stable
Structalit® 8805 30,000-45,000 epoxy thermal Resistant to oils
grease and fuels
excellent flow properties
beige color
Structalit® 8838 6,500-7,500 epoxy thermal Black color
flexible potting compound
excellent flow properties
Structalit® 8926 30,000-45,000 epoxy thermal Resistant to oils
grease and fuels
excellent flow properties
beige color
Vitralit® 1600 LV 5,000-6,000 epoxy UV
thermal
Very high Tg
low water absorption
low ion content
very high chemical resistance
Vitralit® 1605 200-400 epoxy UV
thermal
Low shrinkage
low heat expansion
very high tg
excellent chemical resistance
certified to ISO 10993-5 standards
Vitralit® 1650 6,000-9,000 epoxy UV Electronic grade
low ion content
suitable for chip protection
Vitralit® 1655 150-300 epoxy UV
thermal
Flexible
certified to USP Class VI and ISO 10993-5 standards
resistant to all common sterilization methods
Vitralit® 1657 120,000-130,000 epoxy UV Low ion content
excellent chemical resistance
low water absorption
suitable for covering open bonded chips
Vitralit® 1671 250,000-300,000 epoxy UV
thermal
Stable dam compound
high ion purity
electronic grade adhesive
high temperature conductivity
low water absorption
Vitralit® 1680 6,000-9,000 epoxy UV Very high resistance to heat and humidity
electronic grade adhesive
low ion content
suitable for chip protection
Vitralit® 1688 3,000-4,000 epoxy UV Excellent flow properties and leveling
electronic grade adhesive
low ion content
suitable for chip protection
excellent resistance to heat and humidity
Vitralit® 1691 280,000-310,000 epoxy UV
thermal
Black color
high ion purity
electronic grade adhesive
high temperature resistance
fast surface curing with UV light
Vitralit® 1720 2,700-3,700 epoxy UV Low shrinkage
high temperature resistance
Vitralit® 1722 5,000-8,000 epoxy UV Very high adhesion to most thermoplastics
low shrinkage
high temperature resistance
Vitralit® 2004 F 60-100 epoxy UV
thermal
Fluorescing
flexible
autoclavable
dry surface after curing
low ion content
sprayable
Vitralit® 2007 F 200-500 epoxy UV
thermal
Fluorescing
flexible
autoclavable
excellent chemical resistance
low ion content
Vitralit® 2008 160-300 epoxy UV
thermal
Dry surface after UV-curing
autoclavable
excellent chemical resistance
scratch resistant coating
Vitralit® 2009 F 100-200 epoxy UV
thermal
Fluorescing
flexible
autoclavable
high chemical resistance
low ion content
Vitralit® 4451 500-800 acrylate UV Low shrinkage
soft and elastic
dry surface after curing
protective coating
Vitralit® 5140 250-500 acrylate UV
VIS
Flexible
well suited for bonding plastics with low UV translucence and permeable to visible light
certified to USP Class VI standards
Vitralit® 6103 3,500-5,000 acrylate UV
thermal
Very high adhesion to metals and sintered materials
transparent
Vitralit® 6104 3,500-6,000 acrylate UV
thermal
Very high adhesion to metals and sintered materials
Vitralit® 6104 VT 80,000-90,000 acrylate UV
thermal
Very high adhesion to metals and sintered materials
ideal for bonding large components on circuit boards (corner bonding)
Vitralit® 6105 3,500-6,000 acrylate UV
thermal
Very high adhesion to metals and sintered materials
Vitralit® 6125 4,000-6,000 acrylate UV
thermal
Contains chemical activator
excellent adhesion to stone
glass
metals and thermoplastics
high temperature resistance
medium viscosity
Vitralit® 6128 800-1,200 acrylate UV
thermal
Contains chemical activator
very high adhesion to stone
glass
metals and thermoplastics
high temperature resistance
Vitralit® 6128 VT 18,000-30,000 acrylate UV
thermal
Contains chemical activator
high temperature resistance
high viscosity
excellent adhesion to stone
glass
metals and thermoplastics
Vitralit® 9179 200-400 acrylate UV Fast curing
very well suited for automated production lines
yellow color
dry surface
Vitralit® 9180 700-1,200 acrylate UV Dry surface
fast curing of thick layers
yellow color
Vitralit® 9181 4,000-7,000 acrylate UV Yellow color
dry surface
fast curing of thick layers
Vitralit® UD 5180 18,000-23,000 epoxy UV
thermal
Yellowish colour
perfect solution for bonding flexible circuit paths
optional thermal post-curing
resistant to reflow processes
grey color
Vitralit® UD 8559 LV 700-1,000 acrylate UV
VIS
moisture
Tackfree surface
liquid
suitable for pin sealing
Vitralit® VBB 1 1,000-1,500 acrylate UV
VIS
Elastic
high peel strength
optically clear
very flexible
suitable for potting

*UV = 320 - 390 nm          VIS = 405 nm