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

DOW DOWSIL BY28-503 Compound

DOW DOWSIL BY28-503 Compound is a high-performance silicone-based thermal interface material from Dow’s DOWSIL portfolio—designed for efficient heat transfer in electronics, featuring low thermal resistance, excellent compressibility, and long-term stability across wide temperature ranges.
  • dow dowsil by28 503 compound_0745fc51
  • dow dowsil by28 503 compound_0745fc51

Features Of DOW DOWSIL BY28-503 Compound

  1. High-performance silicone-based encapsulant offering excellent thermal stability and long-term reliability.

  2. Low viscosity formulation enables easy dispensing and superior flow into complex geometries.

  3. Excellent electrical insulation properties with low dielectric constant and dissipation factor.

  4. UV and moisture resistance ensures robust performance in demanding outdoor and harsh-environment applications.

  5. Cures at room temperature or accelerated with mild heat, supporting flexible manufacturing integration.

Typical Applications Of DOW DOWSIL BY28-503 Compound

  1. Encapsulation of power electronics and LED modules for automotive lighting systems.

  2. Protective coating for sensors and control units exposed to thermal cycling and vibration.

  3. Dielectric encapsulation of high-voltage transformers and busbar assemblies.

  4. Sealing and potting of industrial IoT devices requiring environmental protection and signal integrity.

  5. Underfill and conformal protection for PCBs in renewable energy inverters and battery management systems.

Specifications Of DOW DOWSIL BY28-503 Compound

Chemical TypePlatinum-cured liquid silicone rubber (LSR)
Product FormTwo-component (Part A + Part B), ready-to-mix liquid
AppearanceTranslucent, low-viscosity liquid
Primary ApplicationsEncapsulation, potting, and protective coating for electronic components
Key FeaturesThermally stable, electrically insulating, UV-resistant, low shrinkage
Shore A Hardness (7 days, 25°C)25–30
Density (g/cm³, 25°C)1.10–1.15
UL RecognitionUL 94 V-0 (after full cure)


Get in Touch with ERICW
Let competitive chemical materials go global.

Your Name *

Your Email *

Your Phone

Country

Your Message *