Thermal - Pads, Sheets

Part Number	Description / PDF	Quantity
TG-A6200-30-30-5.0 t-Global Technology	THERM PAD A6200 30X30X5MM	72
TG-A38KF-190-140-2.0 t-Global Technology	THERMAL PAD 190X140MM BLUE	10
TG-A4500F-320-320-5.0 t-Global Technology	THERMAL PAD 320X320MM PURPLE	10
EYG-R0611ZLWH Panasonic	THERM PAD 60X106X0.25MM GRAY	14
EYG-R0409ZRGJ Panasonic	THERM PAD 44X93X0.35MM GRAY	20
17.78MM-22.86MM-25-8810 3M	THERM PAD 22.86MMX17.78MM 1=25PK	0
LI2000-150-150-0.15 t-Global Technology	THERM PAD 150MMX150MM W/ADH WHT	34
45.97MM-45.97MM-25-8810 3M	THERM PAD 45.97MMX45.97MM 1=25PK	0
TG-A2200-24-21.01-2.0 t-Global Technology	THERMAL PAD 24X21.01MM GREY	750
4671 Keystone Electronics Corp.	THERM PAD 20.32MMX12.83MM	474097400
EYG-A121807K Panasonic	THERM PAD 180MMX115MM GRAY	0
173-7-240A Wakefield-Vette	THERM PAD 19.1MMX12.7MM W/ADH	4966
A14692-30 Laird - Performance Materials	THERM PAD 457.2MMX279.4MM AMBER	330
TG-A373S-100-100-2.0-1A t-Global Technology	THERM PAD 100MMX100MM W/ADH YLW	0
EYG-R0813ZRMD Panasonic	THERM PAD 71X123X0.35MM GRAY	10
9.52MM-9.52MM-25-8810 3M	THERM PAD 9.52MMX9.52MM 1=25/PK	0
TG-APC93-320-320-1.5-0 t-Global Technology	NON-SILICONE THERMAL PAD 320X320	0
TG-A1780-10-10-1.5 t-Global Technology	THERM PAD A1780 10X10X1.5MM	197
A17690-14 Laird - Performance Materials	THERM PAD 228.6MMX228.6MM PINK	3
60-12-8302-1671 Parker Chomerics	CHO-THERM 1671 TO-220 W/ADH	826

Thermal - Pads, Sheets

1. Overview

Thermal pads and sheets are thermally conductive materials used to transfer heat away from electronic components to heat sinks or ambient environments. They fill air gaps between uneven surfaces, improving thermal efficiency. These materials are critical in modern electronics, automotive systems, and industrial equipment to prevent overheating, enhance reliability, and ensure compliance with safety standards.

2. Main Types and Functional Classification

Type	Functional Features	Application Examples
Silicone-Based Pads	High flexibility, low compression force, dielectric insulation	Smartphones, laptops, LED lighting
Non-Silicone Pads	Lower cost, reduced silicone oil migration	Power supplies, industrial controls
Phase Change Materials (PCM)	Softening at operational temperatures for better contact	CPUs, GPUs, servers
Metal-Backed Pads	Aluminum/copper reinforcement for structural support	EV battery packs, high-power lasers
Graphite Sheets	Ultra-thin, anisotropic heat spreading	5G base stations, wearable devices

3. Structure and Composition

Typical thermal pads consist of:

Base Material: Silicone rubber (standard), polyurethane (low-cost), or epoxy (rigid)
Filler: Aluminum oxide, boron nitride, or silver-coated particles for thermal conductivity
Adhesive Layers: Pressure-sensitive acrylic or silicone adhesives (optional)
Reinforcement: Fiberglass mesh or metal foils for mechanical stability

4. Key Technical Parameters

Parameter	Importance
Thermal Conductivity (W/m K)	Measures heat transfer efficiency (ASTM D5470)
Thickness (mm)	Impacts contact resistance and compression force
Operating Temperature Range ( C)	Determines material stability under thermal stress
Hardness (Shore 00)	Affects conformability to surfaces
Adhesion Strength (N/mm )	Critical for mechanical fixation
Electrical Insulation (kV/mm)	Essential for high-voltage applications

5. Application Fields

Major industries include:

Consumer Electronics: Mobile phones (e.g., Samsung Galaxy series), tablets, gaming consoles
Automotive: EV battery thermal management (Tesla Model 3), powertrain inverters
Telecom: 5G base stations (Huawei AAU modules), optical transceivers
Industrial: CNC machines, medical imaging equipment
Aerospace: Avionics cooling systems

6. Leading Manufacturers & Products

Manufacturer	Representative Product	Key Specification
Laird Performance Materials	THERM-A-GAP GEL 15	15 W/m K, 0.5mm thickness
Bergquist (Henkel)	Gap Pad 1500S	Silicone-free, 8.0 W/m K
3M	5595 PCM	Phase change at 55 C, 12 W/m K
Fujipoly	SARCON Matrix MG	Metal-gel hybrid, 20 W/m K
Momentive	TSE 3045	Graphite sheet, 400 W/m K (in-plane)

7. Selection Guidelines

Key considerations:

Thermal Requirements: Calculate required thermal conductivity based on power dissipation (using Fourier's Law)
Mechanical Constraints: Evaluate hardness-thickness trade-offs for housing clearance
Environmental Factors: Check temperature/chemical resistance for outdoor/automotive use
Cost Optimization: Balance performance vs. budget (e.g., graphite sheets cost 30% more than silicone pads)
Regulatory Compliance: Ensure RoHS/REACH certification for EU markets

8. Industry Trends

Emerging trends include:

Ultra-Thin Materials: 0.1mm graphite sheets for foldable devices
High-Conductivity Composites: Boron nitride nanotube-enhanced pads (30+ W/m K)
Smart Thermal Interfaces: Electro-responsive materials with tunable conductivity
Green Manufacturing: Water-based silicone formulations reducing VOC emissions
Integrated Solutions: Combination pads with embedded temperature sensors