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® PG25A | Putty | Lowest modulus, putty-like gap filler available | 6.0 x 10-3 | 2.50 |
| SARCON ® PG45A | Lowest modulus, putty-like gap filler available | - | 4.50 | |
| SARCON ® PG80B | High performance thermal conductivity gap filler pad | 19.1 x 10-3 | 8.00 | |
| SARCON ® XR-Um | Highest thermal conductive putty type silicone sheet | 40.8 x 10-3 | 11.00 | |
| SARCON ® XR-Um-AL | Highest thermal conductive putty type silicone sheet with Aluminum film | 40.8 x 10-3 | 11.00 | |
SARCON® Silicone Putty is a highly conformable, thermally conductive, nonflammable interface materials. It’s thermal performance is equal to our most highly rated GR45A and GR80A Silicone Gap Filler Pads.
Four formulations are available, PG45A, GR-Pm, PG80A and XR-Um. 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
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® XR-Um
DESCRIPTION:
- Sarcon® XR-Um Silicone (Gel) compound
- Sarcon® XR-Um-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 | Method | |
|---|---|---|---|---|
| Thermal Conductivity |
W/m.K | 17 | 17 | ASTM D5470 |
| Unit | XR-Um | XR-Um-AL | Method | |
|---|---|---|---|---|
| Flame Retardancy |
UL94 | 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) |
Sarcon® XR-Um 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 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 | |
|---|---|---|
| +120C Aging | ||
| Initial | 0.03 | |
| 250 hrs | 0.03 | |
| 500 hrs | 0.03 | |
| 1,000 hrs | 0.03 | |
| +150?C Aging | ||
| Initial | 0.03 | |
| 250 hrs | 0.04 | |
| 500 hrs | 0.04 | |
| 1,000 hrs | 0.04 | |
| +85?C 85%RH Aging | ||
| Initial | 0.03 | |
| 250 hrs | 0.03 | |
| 500 hrs | 0.03 | |
| 1,000 hrs | 0.03 | |
| -40?C to +125?C Heat Shock | ||
| Initial | 0.03 | |
| 250 hrs | 0.03 | |
| 500 hrs | 0.03 | |
| 1,000 hrs | 0.03 | |
EXTRACTABLE VOLATILE:
Low Molecular Weight Siloxane Content
| Dn | XR-Um | Test Method |
|---|---|---|
| Total less D20 |
Less than 0.0010 wt% |
Gas Chromatographic Analysis by Abstracting Acetone (XR-Um) Carbon Tetrachloride (XR-v) |
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