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Gap Filler Pads (Putty)

The chart below contains link to all Putty products. Select a part to view details.

 

SARCON ® Type Application Guidelines Typical Thermal Conductivity
Cal/cm - sec - °C Watt/m•K
SARCON ® GR-Pm Putty High thermal conductivity gap filler pad 14.4 x 10-3 6.00
SARCON ® XR-Pe High performance thermal conductivity gap filler pad 26.3 x 10-3 11.00
SARCON ® XR-Um Highest thermal conductive putty type silicone sheet 40.8 x 10-3 17.00
SARCON ® XR-Um-AL Highest thermal conductive putty type silicone sheet with Aluminum film 40.8 x 10-3 17.00
SARCON ® XR-v Highest thermal conductive thin film putty thermal interface 14.4 x 10-3 6
SARCON ® XR-v-AL Highest thermal conductive thin film putty thermal interface with aluminum barrier 14.4 x 10-3 6

AVAILABLE CONFIGURATIONS:

  • Sheets
  • Die-cuts

APPLICATIONS:

  • Between chassis wall and heat sink
  • Between CPU and heat sink
  • Between semiconductor and heat sink
  • Component to heat spreader

CONSTRUCTION:

SARCON® Silicone Putty is a highly conformable, thermally conductive, nonflammable interface materials. It’s thermal performance is equal to our most highly rated GR-m and XR-e Silicone Gap Filler Pads.

Three formulations are available, GR-Pm and XR-Pe. The specifications for each can be found in the chart below. The surface consistency is excellent for filling small air gaps and uneven mating surfaces, making reliable contact with various shapes and sizes of components.

  • Very low compression force at high compression rate
  • Suitable for gaps as small as 0.3mm or less
  • UL94 V-0 certified
  • Available in three formulations

UL FILE NUMBER: E58126

SARCON® XR-Um and XR-v

Sarcon® XR-Um, XR-v is the highest thermal conductive putty type silicone sheet. The material’s putty nature greatly contributes to reduction of contact resistance and consequent ly to its low thermal resistance. It is a customer friendly material due to its easy application by printing.

Sarcon® XR-Um-AL, XR-v-AL has one surface with aluminum film, which enables users to remove the carrier film after installation (before operation) with no-pullout effect.

  • Putty nature enables low contact thermal resistance
  • Low Molecular Siloxane content is very low
  • Has a flame retardancy of UL specification 94 V-0

UL FILE NUMBER: E58126

DURABILITY:

Test Conditions 20X-Um 15x15 11X-v 15x15
+120?C Aging      
  Initial 0.03 0.23
  250 hrs 0.03 0.23
  500 hrs 0.03 0.25
  1,000 hrs 0.03 0.25
+150?C Aging      
  Initial 0.03 0.23
  250 hrs 0.04 0.22
  500 hrs 0.04 0.23
  1,000 hrs 0.04 0.23
+85?C 85%RH Aging      
  Initial 0.03 0.24
  250 hrs 0.03 0.21
  500 hrs 0.03 0.20
  1,000 hrs 0.03 0.20
-40?C to +125?C Heat Shock      
  Initial 0.03 0.26
  250 hrs 0.03 0.22
  500 hrs 0.03 0.23
  1,000 hrs 0.03 0.24

 

EXTRACTABLE VOLATILE:

Low Molecular Weight Siloxane Content

Dn XR-Um XR-v Test Method
Total
less D20

Less than
0.0010 wt%
Less than
0.10 wt%
Gas Chromatographic
Analysis by
Abstracting Acetone (XR-Um)
Carbon Tetrachloride (XR-v)

DESCRIPTION:


  • Sarcon® XR-Um, XR-v: Silicone (Gel) compound
  • Sarcon® XR-Um-AL, XR-v-AL: Silicone (Gel) compound with Aluminum film (10μmT)

APPLICATIONS:

  • Thermal transfer from CPU and other heat generating devices to heat sink

APPLICATION GUIDE:

To determine the size and volume of SARCON® to be used, follow this helpful example:

  Unit XR-Um XR-Um-AL XR-v XR-v-AL Method
Thermal
Conductivity
W/m.K 17 17 6 6 ASTM D5470
  Unit XR-Um XR-Um-AL XR-v XR-v-AL Method
Flame
Retardancy
UL94 V-0 V-0
equivalent
V-0 V-0
equivalent
UL94

TYPICAL CHARACTERISTICS:

Test Property Unit   14.5 psi
(100kPa)
43.5 psi
(300kPa)
72.5 psi
(500kPa)
Thermal
Resistance
?C•in2/W
(?C•cm2/W)
20X-Um 0.02 0.02 0.02
  (0.16) (0.12) (0.11)
30X-Um 0.03 0.03 0.02
  (0.20) (0.17) (0.15)
40X-Um 0.05 0.04 0.04
  (0.30) (0.27) (0.25)
50X-Um 0.06 0.05 0.04
  (0.36) (0.31) (0.28)
20X-Um-AL 0.04 0.04 0.03
  (0.29) (0.25) (0.22)
30X-Um-AL 0.05 0.04 0.04
Test Method     (0.35) (0.28) (0.26)
    40X-Um-AL 0.07 0.05 0.04
FTM P-3050     (0.42) (0.33) (0.29)
    50X-Um-AL 0.08 0.06 0.05
(ASTM D5470 Equivalent)     (0.50) (0.38) (0.31)
    11X-v 0.02 0.01 0.01
  (0.13) (0.09) (0.08)
11X-v-AL 0.06 0.04 0.03
  (0.38) (0.24) (0.17)