Applications

DOWSIL™ TC-3065 Thermal Gel – Reworkable silicone thermal gel for PCB assemblies and optical device cooling

Item Name: DOWSIL™ TC-3065 Thermal Gel
Manufacturer: Dow Chemical Company
Technologies: Silicone-based, thermally conductive, reworkable gel
Color: Gray
Cure Type: Room temperature or accelerated heat cure
Package Size: Contact to Techniq VN for details.
Shelf Life: 12 months

1. Product Overview

DOWSIL™ TC-3065 is a one-part, gray, thermally conductive silicone gel designed for heat dissipation in electronic assemblies. It offers thermal conductivity of 6.5 W/mK, good adhesion, and re-workability, enabling complete removal without residue. The gel cures at room temperature or faster at elevated temperatures, forming a stable, elastic pad resistant to humidity, mechanical stress, and harsh environments. With low volatile content and ease of automated dispensing, it is suitable for high-reliability thermal management in compact devices.


2. Applications

  • Optical transceivers thermal interface

  • PCB system assemblies

  • Replacement for fabricated thermal pads

  • General heat dissipation for power devices and sensitive electronics

3. Typical Properties

Property Condition Value
Part Type One-part
Color Gray
Viscosity 25°C, @10 s⁻¹ 200 Pa·s
Extrusion Rate 60 g/min
Cure Time 100°C 30 min
Hardness Shore 00 60
Tensile Strength 0.2 MPa
Elongation 20%
Specific Gravity (Cured) 3.45 g/cm³
Working Time 25°C 5 days
Dielectric Strength 10 kV/mm
Volume Resistivity 7 × 10¹³ Ω·cm
Thermal Conductivity Hot Disk 6.5 W/mK
Bond Line Thickness 150 μm
NVC 99.9%
Shelf Life -10°C 12 months
Operating Temp. Range -45 to 150°C

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