rebecca 
Dielectric gels are a special type of encapsulant, with an amazing quality to remain a soft and flexible material post-curing. Coming both as one or two-part materials this product, satisfy the needs of most applications and process situations. Increasingly industry trends call for compact-sized components with higher power densities. These trends demand dependence on stronger gels that protect assemblies and their properties. Techno Gelgum Dielectric High-Temperature gels are silicone dielectric gels best fit for potting and protecting devices; especially in PCB and power modules for protecting the dies, & interconnects from environmental conditions and to offer dielectric insulation.
The high-end re-enterable and dielectric insulation gel offers:
- Protection for interconnections based on thermal and mechanical stresses
- Stability during harsh environmental conditions
- No surface cracking or delamination from housing across an extensive temperature range
These insulation gels are suitable for operating temperatures ranging from -40C to + 215℃ letting devices operate at these extreme temperatures. The soft characteristic of these gels can help in managing the CTE mismatch between components or materials, during such low and high-temperature excursions. This high-temperature performance can allow for lowering field failures and warranty costs.
Application Of Dielectric Insulation Gel
Techno Gelgum dielectric insulation Gels are a special type of encapsulant that cure to a very soft material. Gels cure in place to create cushioning, self-healing, resilient materials. Cured gels preserve near about all the stress relief and self-healing qualities of a liquid; while delivering the dimensional stability of an elastomer which is incrementally required for delicate components.
Gels are commonly used to isolate circuits from the dangerous effects of moisture and other contaminants, and to provide electrical insulation for high voltages.
An additional application is offering stress relief to protect circuits and interconnections from thermal and mechanical stresses. Gels are typically applied in thick layers to completely encapsulate higher architectures.
This high-temperature resistant gel has been shown to operate efficiently, for over 3,000 hours at 215°C, without cracking, delamination, electrical failure, or formation of voids in the material. This assures appropriate application at a continuous temperature of 200°C per UL-1557 standard.
Benefits:
- Reliability of devices utilized in high-temperature conditions
- Keep wires, ribbons, & delicate leads safe against thermal cycling, impact, dust, vibrations, etc.
Typical Applications:
- Potting of IGBT modules put to use for power conversion
- Protecting PCB and sensitive devices running at high temperature
- Industrial sensors and actuators
- Insulation of high-voltage devices
The Summary
Dielectric gels are highly suitable for PCBs and power modules. They have been designed to protect interconnections from environmental conditions together with offering dielectric isolation. The dielectric silicone gel materials are very soft, lightly cross-linked silicone polymers that offer effective stress relief and self-healing properties; at the same time maintain dimensional stability, as well as offer a gummy adhesion. These properties make the dielectric gels the ideal candidates to consider, in order to, protect fragile electronic components from moisture and contaminants.
