EYG-T Series, Graphite-PAD Prod Intro Datasheet by Panasonic Electronic Components

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Panasonic 0 untu heat sources w Emhnssed Separator Graphite-PWD PEI Separator Silicone Resin Filler
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Panasonic’s new Thermal Management material, the EYG-T Series
Graphite-PAD, is a thermal interface material that compatibly
obtains excellent thermal conductivity in Z-axis thickness direction
along with providing superior flexibility. The new Graphite-PAD
product provides properties that are greater than that of most
existing thermal interface materials.
Graphite-PADs are composed of silicone resin and Pyrolytic Graphite
Sheets (PGS) as filler. This combination of materials offers high
Thermal Management reliability by enabling designs with high heat
dissipation. The PGS inside the resin is oriented in a vertical direction
as shown in Figure 1. This oriented structure provides excellent
thermal conductivity in thickness direction. The component is very
flexible (deformable) since it is mainly composed of silicone resin.
Being deformable with a low load facilitates installation.
Graphite-PAD Features
Thermal Conductivity in Thickness Direction
Thermal Conductivity Of The Material: 13 W/m-K
Improved thermal conductivity in thickness direction is obtained by
having PGS Graphite Sheet® oriented in vertical direction filled into
silicon resin.
Excellent Flexibility
Hardness: TYPE E 25
Provides efficient heat conduction thanks to its high adhesion
performance generated from flexibility. Flexibility also provides
degree of freedom in design because the component can be set
onto heat sources with a low load.
CIRCUIT PROTECTION
Introducing The New EYG-T Series “Graphite-PAD”
Thermal Interface Material From Panasonic
High Thermal Conductivity In The Z-Direction With Superior Flexibility
Embossed Separator
PET Separator
Silicone Resin Filler
Graphite-PAD®
Figure 1: Graphite-PAD Structure
(W?
Relays & Connectors Capacitors Circuit Protection Electromechanical Sensors Industrial Automation Resistors & Inductors Semiconductors Wireless Connectivity
Two Riverfront Plaza, 7th Floor, Newark, NJ 07102-5490 | na.industrial.panasonic.com | industrial@us.panasonic.com | 1-800-344-2112
Items Test
Equipment/
Method
Condition
Data
0.5 mm 1.0 mm 1.5 mm 2.0 mm 3.0 mm
Thickness (mm) Micrometer 0.50 1.0 1.5 2.0 3.0
Thermal Resistance (°C - cm2/W) TIM Tester 100 kPa 0.96 1.34 1.56 1.93 2.36
Compressibility
(%)
TIM Tester 100 kPa(at
50°C)
5.78 10.29 17.46 17.80 17.90
Thermal Conductivity of
Graphite-PAD with a unit
(including contact resistance)
(W/m-K) TIM Tester
100 kPa 5.08 7.02 7.80 8.60 10.10
Thermal Conductivity of the
Graphite-PAD
(W/m-K) (ASTM D5470) 50 kPa 13
Hardness (ASTM D2240) TYPE E 25
Adhesive Adhesive on both faces
Volume Resistivity
(Ω-cm)
(ASTM D257) 4x105
Operating Temperature Range (°C) -40 to 150
Siloxane Solvent
extraction
(D4-D10) ≤70ppm
Figure 2: Thermal Resistance Depending On Pressure
Pressure / kPa
Thermal resistance / Kcm2/W
Pressure / kPa
0
0.5
1
1.5
2
2.5
3
0 100 200 300 400
Thickness 0.5 mm
Thickness 1.0 mm
Thickness 1.5 mm
Thickness 2.0 mm
Thickness 3.0 mm
2
CIRCUIT PROTECTION
#HH mat vial 13WImK MWImK
Relays & Connectors Capacitors Circuit Protection Electromechanical Sensors Industrial Automation Resistors & Inductors Semiconductors Wireless Connectivity
Two Riverfront Plaza, 7th Floor, Newark, NJ 07102-5490 | na.industrial.panasonic.com | industrial@us.panasonic.com | 1-800-344-2112
Figure 3: Compressibility Depending On Pressure
Figure 4: Comparison Of Thermal Conductivity
Figure 4 shows an experiment to compare Graphite-PAD and a generally used thermal interface material. The pictures clarify that the
Graphite-PAD quickly spreads heat in the thickness direction.
0%
10%
20%
30%
40%
50%
60%
70%
0 100 200 300 400
Thickness 0.5 mm
Thickness 1.0 mm
Thickness 1.5 mm
Thickness 2.0 mm
Thickness 3.0 mm
Pressure / kPa
Compressibility / %
Standard Thermal
Interface Material
Standard Thermal
Interface Material
IR Camera
Ambient
temperature at 25°C
Graphite-PAD
Graphite-PAD
13 W/mK 14 W/mK
Size of samples:
30 15 2mm
Aluminum boards 0.2mmt
(6cm×6cm) Black colored
Heat source 60°C
3
CIRCUIT PROTECTION

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