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

Dow DOWSIL 3-4150 Silicone Dielectric Gel Kit

Dow DOWSIL 3-4150 Silicone Dielectric Gel Kit is a two-part platinum-cured silicone system designed for high-voltage insulation and thermal management in EV batteries and power electronics. It offers excellent dielectric strength, low viscosity for easy dispensing, and stable performance from −40°C to 200°C.
  • dow dowsil 3 4150 silicone dielectric gel kit_0a2b6d8a
  • dow dowsil 3 4150 silicone dielectric gel kit_0a2b6d8a

Features Of Dow DOWSIL 3-4150 Silicone Dielectric Gel Kit

  1. Non-corrosive, platinum-cured silicone formulation ensuring long-term compatibility with sensitive electronics and metals.

  2. Ultra-low modulus and excellent flow characteristics for complete void filling and stress-free encapsulation of delicate components.

  3. Outstanding dielectric stability across wide temperature range (−50 °C to +200 °C) and high humidity conditions.

  4. UL 94 V-0 rated for flame retardancy, supporting safety compliance in demanding electrical environments.

  5. Two-component, room-temperature curing system with extended working time and low exotherm for precision dispensing.

Typical Applications Of Dow DOWSIL 3-4150 Silicone Dielectric Gel Kit

  1. Thermal and electrical insulation of high-voltage power electronics, including IGBT modules and inverters.

  2. Encapsulation and protection of LED drivers, EV battery management systems (BMS), and onboard chargers.

  3. Dielectric filling for sensors, connectors, and junction boxes exposed to thermal cycling and vibration.

  4. Conformal coating alternative for PCBs requiring reworkability and zero outgassing in aerospace and medical devices.

Specifications Of Dow DOWSIL 3-4150 Silicone Dielectric Gel Kit

Chemical TypePlatinum-cured silicone elastomer
Product FormTwo-component liquid kit (Part A + Part B)
AppearanceTranslucent, viscous gel (Part A); colorless to pale yellow liquid (Part B)
Primary ApplicationsDielectric encapsulation, thermal interface, and environmental protection of electronic assemblies
Key FeaturesNon-corrosive, low modulus, UL 94 V-0, RTV cure
BenefitsStress relief, long-term reliability, no post-cure required, RoHS compliant
Cure SystemPlatinum-catalyzed addition cure
Shelf Life (unopened)12 months at 25 °C, stored in original sealed containers


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