A17084-06

## **Tgard™ 500** 

## Thermally Conductive Insulators 

## **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, silicone rubber coated on electrical grade fiberglass. Tgard™ 500 has proven low thermal resistance after reliability and shows no delamination. 

Tgard™ 500 is designed for applications that require additional thickness to prevent electrical shorts from 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 0.48° C- in2/watt at 50 psi 

## **APPLICATIONS** 

   - Automotive motor controls 

   - Switching mode power supplies - stamped aluminum heatsinks 

- Thermal resistance of 0.28° C- in2/watt at 400 psi 

- Thick enough to encapsulate burrs of stamped heatsinks 

## THR-DS-Tgard-500_09_28_2020 

Any information furnished by Laird Technologies, Inc. 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 Technologies materials rests with the end user. Laird Technologies makes no warranties as to the fitness, merchantability, suitability or non- infringement of any Laird Technologies materials or products for any specific or general uses. Laird Technologies shall not be liable for incidental or consequential damages of any kind. All Laird Technologies products are sold pursuant to the Laird Technologies’ Terms and Conditions of sale in effect from time to time, a copy of which will be furnished upon request. © Copyright 2020 Laird Technologies, Inc. All Rights Reserved. Laird, Laird Technologies, the Laird Technologies Logo, and other marks are trademarks or registered trademarks of Laird Technologies, 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 Technologies or any third party intellectual property rights. 

**Tgard™ 500** 

## Thermally Conductive Insulators 

|PROPERTIES<br>TEST METHOD<br>METRIC VALUES<br>IMPERIAL VALUES<br>~~aaa~~|PROPERTIES<br>TEST METHOD<br>METRIC VALUES<br>IMPERIAL VALUES<br>~~aaa~~|PROPERTIES<br>TEST METHOD<br>METRIC VALUES<br>IMPERIAL VALUES<br>~~aaa~~|PROPERTIES<br>TEST METHOD<br>METRIC VALUES<br>IMPERIAL VALUES<br>~~aaa~~|PROPERTIES<br>TEST METHOD<br>METRIC VALUES<br>IMPERIAL VALUES<br>~~aaa~~|PROPERTIES<br>TEST METHOD<br>METRIC VALUES<br>IMPERIAL VALUES<br>~~aaa~~|
|---|---|---|---|---|---|
|ELECTRICAL PROPERTIES||||||
|Dielectric with standard voltage<br>50mm probe for 30 sec||ASTM D149|4,500 volts AC||4,500 volts AC|
|Dielectric breakdown voltage<br>50mm probe||ASTM D149|Avg >6,000<br>volts AC||Avg >6,000<br>volts AC|
|Volume resistivity||ASTN D257|1012ohm-cm||1012ohm-in|
|Dielectric constant @1Mhz||ASTN D257|3.3||3.3|
|Electrical RTI temperature rating||UL746D|150ºC||302ºF|
|MECHANICAL PROPERTIES||||||
|Thickness|||0.23 mm||0.009 in|
|Hardness||ASTM D2240|80 Shore A||80 Shore A|
|Tensile strength||ASTM D412|11.7 Mpa||1.7 Kpsi|
|Elongation @ 45º to warp/fill||ASTM D412|20%||20%|
|Elongation along width or length||ASTM D412|5%||5%|
|Operating temperature range|||-60º to 180ºC||-76º to 356ºF|
|Color|||Brown||Brown|
|UL flammability rating||UL 94|V-0||V-0|
|PRESSURE||UNITS<br>10|25<br>50|100|200<br>400|
|||(69)|(172)<br>(345)|(689)|(1379)<br>(2758)|
|TOTAL THERMAL RESISTANCE||||||
|Modified ASTM D5470|°C-in2/watt<br>0.81||0.70<br>0.48|0.33|0.30<br>0.28|
|Modified ASTM D5470|°C-cm2/watt<br>5.16||4.52<br>3.21|2.13|1.94<br>1.80|



Standard thickness: 9 mils (0.229 mm) 

USA: +1.866.928.8181 Europe: +49.8031.24600 Asia: +86.755.2714.1166 **www.laird.com** 

Configurations available: 

Standard options: 

- 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_09_28_2020 

Any information furnished by Laird Technologies, Inc. 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 Technologies materials rests with the end user. Laird Technologies makes no warranties as to the fitness, merchantability, suitability or non- infringement of any Laird Technologies materials or products for any specific or general uses. Laird Technologies shall not be liable for incidental or consequential damages of any kind. All Laird Technologies products are sold pursuant to the Laird Technologies’ Terms and Conditions of sale in effect from time to time, a copy of which will be furnished upon request. © Copyright 2020 Laird Technologies, Inc. All Rights Reserved. Laird, Laird Technologies, the Laird Technologies Logo, and other marks are trademarks or registered trademarks of Laird Technologies, 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 Technologies or any third party intellectual property rights. 

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