Heatsink Transistor Mount Kit for use with TO-220

  • RS Stock No. 712-8225
  • Manufacturer RS PRO
Technical data sheets
Legislation and Compliance
RoHS Certificate of Compliance
COO (Country of Origin): GB
Product Details

Power Transistor Mount Kits

Silicone rubber insulating heat sink washers (reinforced with fibreglass) for mounting power semiconductors
The need for heat sink compound (as used, for example, with mica washers) is eliminated
10 washers supplied in each kit

Note

* An M3 screw is recommended if the bush is not required, counter bore 6.8Øx0.8mm required.

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Tgard™ 500 is a medium thermal performance insulator pad consisting of a ceramic filled high temperature silicone rubber coated on electrical grade fibreglass. 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. Tgard™ 500 is used in applications that require an interface of 2.5ºC/watt or higher on a TO-220 mounted at 50 psi pressure.

Thickness 0.009 in (0.230 mm)
Thermal resistance (e.g. 0.45ºC-in2/watt at 50 psi, 0.35ºC-in2/watt at 400 psi) has to be calculated with the dimensions
Thermal resistance 2.5ºC/watt (or higher) on a TO-220 mounted at 50 psi
Hardness 85 Shore A
Test Method - Hardness ASTM D2240
Tensile Strength 1.3k psi 9.0 MPa
Test Method - Tensile Strength ASTM D412
Elongation at 45º to Warp/Fill 0.20 %
Elongation along Width or Length 5 %
Test Method - Elongation ASTM D412
Mechanical RTI Temperature Rating 302 ºF 150 ºC
Test Method - Mechanical RTI Temp Rating UL 746D
Colour Dark Pink
UL Flammability Rating UL 94 V0
Dielectric WthStand Voltage 4500 VAC
Test Method - Dielectric WithStand Voltage ASTM D149
Dielectric Breakdown Voltage >6000 VAC
Test Method - Dielectric Breakdown Voltage ASTM D149
Volume Resistivity >1012 ohm-cm
Test Method - Volume Resistivity ASTM D257
Dielectric Constant at 1 MHz 3.30
Test Method - Dielectric Constant ASTM D257
Electrical RTI Temperature Rating 302 ºF 150 ºC
Test Method - Electrical RTI Temp Rating UL 746D

Specifications
Attribute Value
Accessory Type Transistor Mount Kit
For Use With TO-220
20 : Next working day (AU stock)
3221 : 5 working days (Global stock)
Price (ex. GST) 1 Kit
$ 4.72
(exc. GST)
$ 5.19
(inc. GST)
Kit(s)
1 - 24
$4.72
25 - 99
$4.57
100 - 249
$4.25
250 - 499
$4.05
500 +
$3.85
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