Glob Top Sealing Compound
Sealing compounds and encapsulants are often used in electronics as so-called glob tops to protect electronic components. They protect components from moisture, dust, dirt and solvents. Glob tops also protect sensitive components from mechanical strain and scratching.
All Panacol sealing compounds and encapsulants 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 shaded areas that the UV light cannot reach. Glob tops with black pigmentation, which are used as covers or coatings, can normally only be heat-cured.
After curing, all glob top sealing compounds withstand short-term temperatures of up to 280°C and remain unaffected by reflow processes. Panacol’s glob top adhesives are easy to process, highly flexible and have a high peel and shear strength.
Glob tops made from black epoxy adhesive material.
The table below lists a selection of sealing compounds suitable for glob tops. Further products and custom solutions are available on request.
| Glob top | Application | Viscosity [mPas] | Base | Curing* | Properties |
|---|---|---|---|---|---|
| Vitralit® 1600 LV |
attaching components on PCBs conformal coating encapsulation of electronic components chip encapsulation potting material automotive, aerospace smart card |
5,000-6,000 | epoxy |
UV thermal |
Very high Tg low water absorption low ion content very high chemical resistance |
| Vitralit® 1650 |
glob top encapsulation conformal coating encapsulation of electronic components chip encapsulation potting material automotive, aerospace smart card |
6,000-9,000 | epoxy | UV |
Electronic grade low ion content suitable for chip protection |
| Vitralit® 1657 |
glob top encapsulation conformal coating encapsulation of electronic components chip encapsulation potting material attaching components on PCBs SMD assembly display sealing |
120,000-130,000 | epoxy | UV |
Low ion content excellent chemical resistance low water absorption suitable for covering open bonded chips |
| Vitralit® 1671 |
glob top encapsulation conformal coating encapsulation of electronic components chip encapsulation potting material attaching components on PCBs SMD assembly display sealing smart card |
250,000-300,000 | epoxy |
UV thermal |
Stable dam compound high ion purity electronic grade adhesive high temperature conductivity low water absorption |
| Vitralit® 1680 |
glob top encapsulation conformal coating encapsulation of electronic components chip encapsulation potting material smart card |
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 |
glob top encapsulation conformal coating encapsulation of electronic components chip encapsulation potting material smart card |
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 | glob top encapsulation | 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® UD 5180 |
glob top encapsulation attaching components on PCBs conformal coating encapsulation of electronic components SMD assembly plastic bonding potting material automotive, aerospace |
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 |
| Structalit® 5891 |
glob top encapsulation plastic bonding SMD assembly |
300,000-400,000 | epoxy | thermal |
Black color fast curing at low temperatures impact resistant |
| Structalit® 5891 T |
glob top encapsulation SMD assembly attaching components on PCBs |
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 |
glob top encapsulation SMD assembly |
200,000-300,000 | epoxy | thermal | black |
| Structalit® 5893 |
glob top encapsulation SMD assembly medical technology needle bonding |
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 |
glob top encapsulation encapsulation of electronic components SMD assembly automotive, aerospace potting material |
45,000-55,000 | epoxy | thermal |
Black color excellent flow properties filling material very high resistance to heat and chemicals |
| Structalit® 8838 |
attaching components on PCBs encapsulation of electronic components SMD assembly |
6,500-7,500 | epoxy | thermal |
Black color flexible potting compound excellent flow properties |
*UV = 320 - 390 nm