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Laird Tgard™ 500 – A0 – 0.23mm
Thermally Conductive Insulators
£0.00
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- High breakdown voltage of > 6,000 volts AC
- Thermal resistance of 0.45º C-in2/watt at 50 psi
- Thermal resistance of 0.35º C-in2/watt at 400 psi
88 Sheets In Stock
Description
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 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.
Benefits
- Thick enough to encapsulate burrs of stamped heatsinks
- Preventselectrical shorts from stamped aluminum
Features
- High dielectric strength of >6,000 volts AC
- Thermal resistance of 0.45ºC-in2 /watt at 50 psi
- Thermal resistance of 0.35ºC-in2 /watt at 400 psi
Recommended Uses
- Automotive motor controls
- Switching mode power supplies - Stamped aluminum heatsinks
Electrical Properties
| Properties | Test Method | Metric Values | Imperial Values |
|---|---|---|---|
| Dielectric with stand voltage | ASTM D149 | 4,500 volts AC | 4,500 volts AC |
| Dielectric Breakdown voltage | ASTM D149 | >6,000 volts AC | >6,000 volts AC |
| Volume Resistivity | ASTM D257 | >10/12 ohm-cm | >10/12 ohm-in |
| Dielectric Constant @ 1 MHz | ASTM D257 | 3.3 | 3.3 |
| Electrical RTI Temperature rating | UL 746D | 150ºC | 302ºF |
Total Thermal Resistance
| Pressure, psi (kPa) | Units | 10 (69) | 25 (172) | 50 (345) | 100 (689) | 200 (1379) | 400 (2758) |
|---|---|---|---|---|---|---|---|
| Modified ASTM D5470 | ºC-in² /watt | 0.6 | 0.55 | 0.45 | 0.40 | 0.35 | 0.35 |
| Modified ASTM D5470 | ºC-in² /watt | 3.9 | 3.2 | 2.9 | 2.6 | 2.3 | 2.3 |
| TO-220 | ºC/watt | 2.9 | 2.6 | 2.4 | 2.2 | 2.0 | 2.0 |
Mechanical Properties
| Properties | Test Method | Metric Values | Imperial Values |
|---|---|---|---|
| Thickness | 0.23 mm | 0.009 inch | |
| Hardness | ASTM D2240 | 85 Shore A | 85 Shore A |
| Tensile Strength | ASTM D412 | 1.3 kpsi | 9 mPa |
| Elongation @45º to Warp/Fill | ASTM D412 | 20% | 20% |
| Elongation along width or length | ASTM D412 | 5% | 5% |
| Mechanical RTI Temperature rating | UL 746D | 150ºC | 302ºF |
| Color | Dark Pink | Dark Pink | |
| UL Flammability Rating | UL 94 | V-0 | V-0 |
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Universal Science T-Pad 1500 – A1 – 0.23mm
£0.00 SKU: 93450- Electrically insulating and moderate thermal performance properties
- Thermal conductivity = 1.5 W/mK
- Requires mounting pressure via spring, metal clip or clamp
- A1 – Adhesive layer on one side
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- Thermally conductive polyimide film with thermal adhesive one side
- Conformability fills micro air voids between mating surfaces reducing thermal resistance
- Provides heat exchange between component and cooling mechanism
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- 5 W/mK thermal conductivity
- Minimizes board and component stress
- Low pressure versus deflection
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