Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Dow SYLGARD 535 Thixotropic Dielectric Gel

Dow SYLGARD 535 Thixotropic Dielectric Gel is a silicone-based, non-flowing, electrically insulating gel engineered for thermal management and electrical isolation in power electronics. It offers excellent dielectric strength, low modulus, and thixotropic behavior for gap-filling without slumping. Compatible with diverse substrates and stable across wide temperature ranges.
  • dow sylgard 535 thixotropic dielectric gel_0be33d4d
  • dow sylgard 535 thixotropic dielectric gel_0be33d4d

Features Of Dow SYLGARD 535 Thixotropic Dielectric Gel

  1. Non-flowing, thixotropic silicone gel that maintains position on vertical and inverted surfaces without sagging or slumping.

  2. Excellent dielectric insulation properties with high dielectric strength and low dielectric loss across wide temperature and frequency ranges.

  3. Thermally stable from –50 °C to +200 °C, enabling reliable performance in extreme operating environments.

  4. Low modulus and stress-relieving characteristics minimize mechanical stress on delicate electronic components and wire bonds.

  5. Chemically inert, non-corrosive, and compatible with common PCB substrates, plastics, metals, and elastomers.

Typical Applications Of Dow SYLGARD 535 Thixotropic Dielectric Gel

  1. High-voltage insulation and potting of power electronics modules, including IGBTs and inverters.

  2. Dielectric encapsulation of sensors, transformers, and busbar assemblies in electric vehicle (EV) power systems.

  3. Gap-filling and conformal protection for LED drivers and solid-state lighting (SSL) housings.

  4. Stress-free insulation of fine-pitch semiconductor packages and MEMS devices during thermal cycling.

Specifications Of Dow SYLGARD 535 Thixotropic Dielectric Gel

Chemical TypeDimethyl siloxane-based thixotropic silicone gel
Product FormPaste (ready-to-use, two-component system requiring mixing)
AppearanceOpaque white to off-white viscous paste
Primary ApplicationsHigh-voltage dielectric insulation, thermal interface, and mechanical stress relief
Key FeaturesThixotropic, non-sagging, low modulus, electrically insulating
BenefitsEliminates air gaps, reduces thermal resistance, prevents corona discharge, protects against moisture and contaminants
Cure MechanismPlatinum-catalyzed addition cure (heat accelerated)
Shelf Life (unopened, 25 °C)12 months in original sealed containers


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