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Accessory - Thermal Interface Material

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TITLE Thermal Interface Material Picture
Thermal Interface
thermal interface with heatsink

Thermal interface materials fill in any gaps and imperfections in the heat sink base and heat source. This minimizes the interface thermal resistance. Alpha offers several thermal interface materials in various sizes. Material choice will depend on attachment method, contact area size, flatness, attachment pressure, and desired thermal performance.

1. Phase Change Material Specification

These materials begin to soften and flow at an elevated temperature, filling the microscopic imperfections between the heat sink and heat source, reducing the thermal interface resistance.
Note : Alpha handles other materials which are not listed below. For example, Parker/Chomerics T766 can be specified. Please contact us if you require a different material.

RoHSREACH
Manufacturer
and datasheet
Color Operating Temperature
(degC)
Thermal Impedance
(degC-cm2/W)
Thickness Thermal Conductivity Specific Gravity
TPCM5125 TPCM5125 PictureLaird Technologies
#Tpcm 5125

Gray -40 to +125 0.20 (@10psi) 0.125(mm)
[.005"]
5.3 W/mK 2.60
TPCM5125
pdf img

TPCM5125-EB (Eighth Brick)
TPCM5125-QB (Quarter Brick)
TPCM5125-HB (Half Brick)

TPCM7125 TPCM7125 PictureLaird Technologies
#Tpcm 7125

Gray -40 to +125 0.10 (@10psi) 0.125(mm)
[.005"]
7.5 W/mK 2.50
TPCM7125
pdf img

TPCM7125-EB (Eighth Brick)
TPCM7125-QB (Quarter Brick)
TPCM7125-HB (Half Brick)

Storage and Handling Instruction
2. Gap Filler Material Specification

These materials are soft and compliant, allowing them to fill any large gaps between the heat sink and heat source. Gap fillers can also be used when a single heat sink is cooling multiple heat sources.
Note : Alpha handles other materials which are not listed below. For example, Laird Tflex HD90000, can be specified. Please contact us if you require a different material.

RoHSREACH
Manufacturer
and datasheet
Color Operating Temperature
(degC)
Thermal Impedance
(degC-in2/W)
Thickness Thermal Conductivity Specific Gravity
SF10-1 SF10-1 PictureLaird Technologies
#SF10
Grey -40 to +125 0.04 (@30psi) 1.00(mm) [.040"] 10 W/mK 3.70
SF10-1
T-FLEX640 T-FLEX640 PictureLaird Technologies
#TFlex 640
Blue-Violet -45 to +200 0.85 (@30psi) 1.00(mm) [.040"] 3 W/mK 1.30
T-FLEX640
T-PLI210 T-PLI210 PictureLaird Technologies
#Tpli 210A1FG

Rose -45 to +200 0.15 (@30psi) 0.25(mm) [.010"] 6 W/mK 1.40
T-PLI210
pdf img

T-PLI210-EB (Eighth Brick)
T-PLI210-QB (Quarter Brick)
T-PLI210-HB (Half Brick)

T-PLI220 T-PLI220 PictureLaird Technologies
#Tpli 220A1
Blue -45 to +200 0.25 (@30psi) 0.50(mm) [.020"] 6 W/mK 1.40
T-PLI220
3. Thermal Grease Specification

Thermally conductive grease offers low thermal resistance, and is far less sensitive to mounting pressure than other thermal interface materials.

RoHSREACH
Manufacturer and datasheet Color Operating Temperature
(degC)
Thermal Conductivity Specific Gravity Weight
G751-1 G751 PictureShin-Etsu Chemical
#G751
Gray -50 to +120 4.5 W/mK 2.5 1 g
4. Thermal Performance and Comparison Data

There are many types of thermal interface materials available in the market. Although each vendor publishes its own product test data, the results depend on the test methods and environment. These factors can be very different from real world operating conditions, making it difficult to compare TIMs accurately. In light of this, we tested the performance of the TIMs we offer in our own thermal lab. These results offer a good reference for comparison purposes.

TIMs Comparison Data Details

5. Pull-tab Liner Option for Phase Change Material
pulltab example

Alpha has standardized the Pull-Tab liner option for phase change material (PCM), TPCM5125 and TPCM7125. If a pre-applied PCM is specified on a heat sink that is 70x70mm or smaller, a pull-tab liner can be added. After selecting TPCM5125 / TPCM7125 as part of a heatsink assembly, the "Add Pull-tab" option will allow the addition of the Pull-Tab liner at a minimum cost increase.



pull tab

Advantage of pull-tab liner
The Pull-Tab makes removal of the protective liner simpler and quicker, reducing the possibility of the interface material being damaged during the liner removal process. The extended Pull-Tab will also overhang the edge of the heat sink, acting as a visual cue. If the liner is left on by the operator, the pull tab will act as an alert that rework is required before the system can be powered up. With a standard liner, there would be no visual cue if the liner is left on by mistake.


6. TIM Customization

Alpha can create a custom piece of thermal interface material.
Please include the following information in a detailed email request to Alpha Sales (Please include a drawing/sketch, if one is available):

  • Company name :
  • Contact name :
  • Country :
  • Tel :
  • Estimated quantity :
  • TIM part number you would like to customize :
  • Customization details/dimensions :
Customized thermal tape
Warning
Please select size.

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