Thermally Conductive Insulators
Tgard™ 500
THICKER THERMAL INSULATOR PAD PREVENTS ELECTRICAL SHORTS
IN AUTOMOTIVE ELECTRONICS APPLICATIONS
Tgard™ 500 is a medium thermal performance insulator pad consisting of a ceramic filled high
temperature silcone rubber coated on electrical grade fiberglass.
Tgard 500 is designed for applications that require additional thickenss to prevent electrical shorts
form stamped aluminum heatsinks used in switching mode power supplies (SMPS) and debris
from aluminum castings used in automotive motor controls.
FEATURES AND BENEFITS
•
•
•
•
High breakdown voltage of > 6,000 volts AC
Thermal resistance of 0.48º C-in2/watt at 50 psi
Thermal resistance of 0.28º C-in2/watt at 400 psi
Thick enough to encapsulate burrs of stamped
heatskinks
APPLICATIONS
• Automotive motor controls
• Switching mode power supplies
- stamped aluminum heatsinks
Americas: +1.847 839.6907
IAS-AmericasEastSales@lairdtech.com
Europe: +44.1628.858941
IAS-EUSales@lairdtech.com
Asia: ++86.21.5855.0827.127
IAS-AsiaSales@lairdtech.com
CLV-customerservice@lairdtech.com
www.lairdtech.com/thermal
Thermally Conductive Insulators
PROPERTIES
ELECTRICAL PROPERTIES
Dielectric with standard voltage
50mm probe for 30 sec
Dielectric breakdown voltage
50mm probe
Volume resistivity
Dielectric constant @1Mhz
Electrical RTI temperature rating
MECHANICAL PROPERTIES
Thickness
Hardness
Tensile strength
Elongation @ 45º to warp/fill
Elongation along width or length
Operating temperature range
Color
UL flammability rating
UL 94
ASTM D2240
ASTM D412
ASTM D412
ASTM D412
0.23 mm
80 Shore A
11.7 Mpa
20%
5%
-60º to 180ºC
Brown
V-0
0.009 in
80 Shore A
1.7 Kpsi
20%
5%
-76º to 356ºF
Brown
V-0
ASTM D149
ASTM D149
ASTN D257
ASTN D257
UL746D
4,500 volts AC
Avg >6,000
volts AC
10
12
ohm-cm
3.3
150ºC
4,500 volts AC
Avg >6,000
volts AC
10
12
ohm-in
3.3
302ºF
Tgard™ 500
TEST METHOD
METRIC VALUES
IMPERIAL VALUES
PRESSURE
TOTAL THERMAL RESISTANCE
Modified ASTM D5470
Modified ASTM D5470
T0-220
UNITS
10
(69)
0.81
5.16
1.29
25
(172)
0.70
4.52
1.01
50
(345)
0.48
3.21
0.95
100
(689)
0.33
2.13
0.79
200
(1379)
0.30
1.94
0.77
400
(2758)
0.28
1.80
0.76
ºC-in
2
/watt
ºC-cm
2
/watt
ºC/watt
Standard thickness:
Configurations available:
Standard options:
9 mils (0.229 mm)
• Sheet form, roll form and die-cut parts
• Single-side, pressure-sensitive adhesive on request
• Without adhesive (A0): 12 x 18” sheets, 12” x 65M,
12” x 30M roll or custom configuration
• With adhesive (A1): 11.75 x 18” sheets, 11.75” x 30M roll
or custom configuration
Data for design engineer guidance only. Observed performance varies in application.
Engineers are reminded to test the material in application.
THR-DS-Tgard-500_03_20_17
Any information furnished by Laird and its agents is believed to be accurate and reliable. All specifications are subject to change without notice. Responsibility for the use and
application of Laird materials rests with the end user, since Laird and its agents cannot be aware of all potential uses. Laird makes no warranties as to the fitness,
merchantability or suitability of any Laird materials or products for any specific or general uses. Laird, Inc or any of its affiliates or agents shall not be liable for incidental or
consequential damages of any kind. All Laird products are sold pursuant to the Laird Terms and Conditions of sale in effect from time to time, a copy of which will be furnished
upon request. © Copyright 2014 Laird, Inc. All Rights Reserved. Laird,
the
Laird Logo, and other marks are trademarks or registered trademarks of Laird, Inc. or an affiliate
company thereof. Other product or service names may be the property of third parties. Nothing herein provides a license under any Laird or any third party intellectual
property rights. Document A 15173-00 Rev C 07_31_2014
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