249G Aavid Thermalloy, 249G Datasheet - Page 103

• Manufacturer Part Number: 249G
• Description: THERMAL GREASE
• Manufacturer: Aavid Thermalloy
• Series: Thermalcotetrade;r
• Type: Silicon Compoundr

Specifications of 249G

• Size / Dimension: 1.0 oz. Tube
• Product: Thermal Management
• Size: 1 oz
• Container: Tube
• Chemical Component: Polydimethylsiloxane/Zinc Oxide
• Dispensing Method: Tube
• Primary Type: Grease
• Temperature, Rating: -40 to +204 °C
• Weight: 1 Oz.
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 35252

Mica and Thermalsil
ORDERING INFORMATION
TYPICAL PROPERTIES FOR MICA INSULATORS
Thermalsil™ III provides excellent thermal conductivity
and electrical resistance. It is used as an electrically-isolat-
ing interface material composed of silicone elastomer
binder with a thermally conductive filler. It is reinforced
with glass cloth to resist tearing and cut-through due to
burrs on transistors or heat sinks.
Thermalsil™ III eliminates the need for grease application
and conforms to mounting surfaces under clamping pres-
sure for optimum heat conduction. The finely woven glass
cloth provides the thinnest possible matrix for enhanced
thermal resistance. Thermalsil™ III is available in any con-
figuration with adhesive backing.
Mica insulators provide high maximum operating temper-
atures (550
Part number
56-77-9G
56-03-2G
53-77-9G
53-03-2G
Property
Dielectric strength
0.025 mm to 0.076 mm thick in air (1 to 3 mils thick in air)
Dielectric constant
Dissipation factor
Volume resistivity
Modules of elasticity in tension
Tensile strength
Hardness mohs, shore
Compressive strength
Specific gravity
Thermal conductivity
Coefficient of thermal expansion
Specific heat
Melting point
Max. operating temperature
www.aavidthermalloy.com
°
C) and excellent electrical properties.
Description
Mica
Mica
Thermalsil
Thermalsil
TM
TM
III
III
TM
III
Electrical
172 X 10
6.5 to 8.7
0.0001-0.0004 @ 10
10
Physical
172 X 10
310 Mpa (45,000 psi)
3.0, 115
2.21 X 10
2.9
Thermal
0.528 W/(m °C ) (0.30 Btu/hr-ft °F)
3.24 X 10
0.084 KJ/Kg °C (0.02 Btu/Lb °F)
1275°C (2327 °F)
550 °C (1022 ºF)
Device
TO-220
TO-220
15
AMERICA
TO-3
TO-3
EUROPE
ohm-cm
3
3
8
-5
volts/mm (4500 volts/mil)
Mpa (25 X 10
Pa (32,000 psi)
°C (1.8 X 10
18.42 (0.725)
42.04 (1.655)
18.42 (0.725)
42.04 (1.655)
6
Italy Tel: [phone] email: [e-mail]
United Kingdom Tel: [phone] email: [e-mail]
USA Tel: [phone] email: [e-mail]
Hz
"A" Dim
-5
6
°F)
) psi
13.21 (0.520)
27.00 (1.063)
13.21 (0.520)
27.00 (1.063)
"B" Dim
TYP (2)
"C"
TYP (2)
DIA
"D"
DIA
FIGURE A
4.32 (0.170)
3.96 (0.156)
4.32 (0.170)
3.96 (0.156)
"C" Dim
TYPICAL PROPERTIES FOR THERMALSIL
Property
Dielectric constant
Dielectric breakdown voltage 26.3 x 10
Volume resistivity
Dielectric dissipation factor
Thickness
Color
Tensile strength
Hardness, shore A
Elongation
Thermal conductivity
Flame resistance
Service temperature
(0.072)
1.83
Insulators – Mica and Thermalsil
(1.187)
30.15
"A"
2.92 (0.115)
1.57 (0.062)
2.92 (0.115)
1.57 (0.062)
"D" Dim
ASIA
Typical value 25°C
Electrical
2.5@50 Hz
2.5@10
2.5@10
5.7 x 10
0.008@50 Hz
0.004 @10
0.004 @10
Physical
0.15mm
(0.006 inch)
Gray-Green
6.1 x 10
87
2% or less
Thermal
0.92 W/(m °C ) (0.532 Btu/hr. ft °F)
UL 94V-0
-60°C to 180°C
(-76°F to 356°F)
Figure
(0.430)
10.92
Singapore Tel: [phone] email: [e-mail]
Taiwan Tel: [phone] email: [e-mail]
A
A
B
B
3
6
15
7
Hz
Hz
3
Pa (8786 psi)
"B"
ohm-cm
volts/mm (667 volts/mil)
3
6
Hz
Hz
"D"
DIA
FIGURE B
TM
III
"C"
Test method
ASTM D-150
ASTM D-149
ASTM D-257
ASTM D-150
UL card #E-58126 (S)
"A"
TM
III
"B"
103