Thermal conductive sheet

Noise suppression thermal conductive sheet

This is a type that features both high-noise suppression performance and thermal conductivity that enables protection of key devices from both heat and electromagnetic waves with a single sheet.

  • Product name
    E8000K series
  • Features
    • Has superior adhesiveness and simultaneously realizes high thermal conductivity and efficiency in noise suppression in GHz bands.
    • Features low levels of low molecular-weight siloxane gas volatility, minimizing the risk of contact damage to components such as substrates even over prolonged periods of usage.
    • Halogen-free with high levels of flame resistance.

Structure

Specifications

Product name E8000K series Remarks
Main component Silicone -
Color Gray -
Available thickness (mm) *1 1.0 - 3.0
Increments of 0.5
-
Hardness *2 < 65 Shore OO
ASTM D2240
Thermal conductivity (W/m·K) 2.5 Estimated thermal conductivity
Relative Magnetic
permeability µ″
500MHz 6.5 -
1GHz 5.8
Relative density (g/cm3) 5.3 -
Flame retardance V-0 : ≧ 3.5 mm
V-1 : 1.0 - 3.0 mm
UL94
File No.E63260
  • *1Thickness of only a thermal conductive sheet. A release film is not included.
  • *2Hardness is measured by stacking the sheets to a thickness of 10 mm or more.

Effective in heat conduction and noise suppression for IC chip, LED substrate and power supply.

1.Magnetic Permeability

Test Condition
Sheet width:Outside diameter 7.0mm, Inside diameter 3.0mm
Sheet thickness:1.0mm
Tester:Network analyzer
Measuring condition:23°C±5°C 60%±20%RH

Results
e8000k_chart_01.gif

e8000k_chart_02.gif

2.Conductive noise suppressing effect (Evaluated by MSL)

Test Condition

e8000k_illust_01.gif

Sheet width:20mm×20mm
Sheet thickness:1.0mm
Substrate:Micro-strip line(MSL) circuit board
Measuring condition:23°C±5°C 60%±20%RH
Tester:Network analyzer

[2cm square sheer is placed on the MSL and the ioss is evaluated by S11 and S21]

Results
e8000k_chart_03.gif

3.Radiation noise suppressing effect 1
(The distribution chart of magnetic field intensity)

Test Condition
e8000k_illust_02.gif
Sheet width:20mm×20mm
Sheet thickness:1.0mm
Substrate:MSL terminated 50Ω circuit board
Measuring condition:23°C±5°C 60%±20%RH
Input:1GHz, 2GHz sine wave
Method of detection: Magnetic field probe
Probe positioning:Setting on the MSL board to 3mm.

[Scanning was made by the magnetic field sensor 3.0mm adove the sheet Comparing the spectrum of magnetic field intensity with and without the sheet]
Results
e8000k_chart_04.jpg

4.Radiation noise suppressing effect 2
(The frequency spectrum of magnetic field intensity)

Test Condition

Sheet width:20mm×20mm
Sheet thickness:2.0mm
Substrate:MSL terminated 50Ω circuit board
Measuring condition:23°C±5°C 60%±20%RH
Method of detection:Magnetic field probe
Probe positioning:Setting on the IC to 3mm.

[Comparing the spectrum of magnetic field intensity with and without the sheet]

Results

e8000k_chart_05.gif

5.Relationship between thermal resistance, compression ratio and pressure

Test Condition

Sheet area:1.24cm2
Measuring condition:23°C±5°C 60%±20%RH
Setting electric power of heater:8W
Unit of thermal resistance:°C/W

Results

caution

Note on the characteristic data given - Data on the characteristics of the products described in this page based on the results of evaluations carried out by the company. This does not guarantee that the characteristics of the product conform with your usage environment. Before use, review the usage conditions based on evaluation data obtained from the equipment and substrates actually used.