A16820-07

## **Tgard™ 300 Series Thermally Conductive Insulators** 

## **HIGH PERFORMANCE THERMAL INTERFACE PRODUCTS** 

Tgard™ 300 is a medium thermal performance insulator pad consisting of a ceramic high temperature silcone rubber coated on electrical fiberglass. 

Tgard 300 is specifically designed for applications that require low component mounting forces. The unique formulation will enhance thermal performance which minimizes thermal resistance at low mounting forces. The uniqe coating formulation offers an excellent mating surface for low pressure clip mounting applications. 

## **FEATURES AND BENEFITS** 

- High breakdown voltage of 6,000 volts AC 

- Thermal resistance of 0.50º C-in2/watt at 50 psi 

- Unique coating formulation offers low mounting forces 

## **APPLICATIONS** 

   - Switching mode power supplies 

   - Industrial equipment 

   - Motor controls 

- Unifying benefits of thermal & electrical performance for general-purpose applications 

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 

**Tgard™ 300 Series Thermally Conductive Insulators** 

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PROPERTIES TEST METHOD METRIC VALUES IMPERIAL VALUES<br>ELECTRICAL PROPERTIES<br>Dielectric withstand voltage<br>ASTM D149 4,500 volts DC 4,500 volts DC<br>50mm probe for 30 sec<br>Dielectric breakdown voltage  Avg >6,000  Avg >6,000<br>ASTM D149<br>50mm probe volts AC volts AC<br>Volume resistivity ASTN D257 10 [12]  ohm-cm 10 [12]  ohm-in<br>Dielectric constant @1Mhz ASTN D257 3.3 3.3<br>Electrical RTI temperature rating UL746D 150ºC 302ºF<br>MECHANICAL PROPERTIES<br>Thickness 0.23 mm 0.009 in<br>Hardness ASTM D2240 75 Shore A 75 Shore A<br>Tensile strength ASTM D412 10 Mpa 1.5 Kpsi<br>Elongation @ 45º to warp/fill ASTM D412 20% 20%<br>Elongation along width or length ASTM D412 5% 5%<br>Operating temperature range -60º to 180ºC -76º to 356ºF<br>Color Yellow Yellow<br>UL flammability rating UL 94 V-0 V-0<br>PRESSURE UNITS 10  25 50 100 200 400<br>(69) (172) (345) (689) (1379) (2758)<br>TOTAL THERMAL RESISTANCE<br>Modified ASTM D5470 ºC-in [2] /watt 0.62 0.57 0.50 0.41 0.34 0.30<br>Modified ASTM D5470 ºC-cm [2] /watt 4.00 3.68 3.09 2.65 2.19 1.94<br>T0-220 ºC/watt 1.17 0.92 0.83 0.81 0.80 0.76<br>**----- End of picture text -----**<br>


Standard thickness: 9 mils (0.229 mm) 

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 

## THR-DS-Tgard-300_032515 

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, Laird Technologies, 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 Technologies’ Terms and Conditions of sale in effect from time to time, a copy of which will be furnished upon request.  © Copyright 2015 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 or any third party intellectual property rights. Document A16898-00 3/2015