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TECHNICAL DATA SHEET

Doc No.: GS-TDS-C300-EN

Issue Date: March 2026  |  Ver: V1.0

Thermal Silicone Pad  |  C-300 Series  (3.0 W/m·K)

200×400 mm  /  Roll Available
1. Product Description

The C-300 series is a thermally conductive silicone pad based on a silicone polymer matrix, manufactured by incorporating high thermal conductivity fillers through a specialized process. It is specifically designed to fill the gap between heat sources (chips, etc.) and heat sinks, frames, or base plates for efficient thermal conduction. The product's soft, elastic, and naturally tacky surface ensures consistently good wettability at the interface, effectively reducing interfacial thermal resistance.

2. Key Features
Compliant with RoHS & REACH environmental regulations
Meets UL94 V-0 flame retardancy requirements
Naturally tacky surface; low silicone oil bleeding rate
Soft and flexible; Shore C hardness 25–80 (adjustable)
Excellent electrical insulation performance
Outstanding aging resistance
3. Technical Data
Item Unit Spec Detection Method
Color Gray / Light Blue / Pink Visual Inspection
Thickness mm 0.3 – 10 ASTM D374
Hardness Shore C 25 – 80 ASTM D2240
Specific Gravity 3.05 ± 0.1 ASTM D792
Thermal Conductivity W/m·K 3.0 ± 0.2 ASTM D5470
Volume Resistivity Ω·cm > 1.0 × 10¹¹ ASTM D257
Dielectric Strength kV/mm ≥ 4 ASTM D149
Dielectric Constant (1 MHz) 3 – 8 ASTM D150
Working Temperature °C -40 ~ +200 IEC 60068-2
Flame Retardancy UL94 V-0 UL94
Standard Sheet Size mm 200 × 400 Ruler / Caliper

* All values represent typical data under standard laboratory conditions. Custom thickness, size, and hardness available upon request.

4. Typical Applications
Battery pack thermal interface (cell-to-module)
BMS board heat dissipation pad
Power module & IGBT cooling interface
LED driver & power supply thermal management
EV inverter & on-board charger (OBC)
Industrial power electronics & motor drives