High Performance, Reworkable Phase Change Material

							                                                                                      Leader in EMI Shielding and Thermal Management

                                                    TM
 THERMFLOW                                                     T766


                             High Performance, Reworkable Phase Change Material

        DESCRIPTION
        Chomerics’ patent pending THERMFLOW™ T766 phase change
        thermal interface material is recommended for applications where
        rework is important. The material provides the high performance
        properties of typical phase change materials with the added
        benefit of easy removal. It consists of a tacky, electrically non-
        conductive phase change film on one side of a conformable metal
        foil carrier. T766 can be assembled onto a heat sink or heat
        spreader, leaving the metal foil exposed. The natural tack of the
        phase change polymer holds the T766 to the heat sink while the
        foil layer acts as a highly conductive interface between the
        component and heat sink and allows a clean break during
        disassembly. The foil also eliminates the need for a protective
        liner, which simplifies the final assembly process and minimizes
        shipping and contamination concerns.
        Chomerics is now offering T766 in two thicknesses, 0.0035 inches
        and 0.006 inches. This added thickness option allows designers
        more flexibility in specifying interface material.


                              Typical Properties                                            T766                           Test Method                                 FEATURES
                                                                                    Conformable                                                                           Conformable metal foil carrier allows for a
                          Carrier                                                                                                    ---                                  clean break during heat sink disassembly
                                                                                        Metal
           CONSTRUCTION




                          Color (Polymer/Metal)                                   Light Gray/Silver                            Visual                                     There are no additional liners to protect the
                                                                                                                                                                          phase change material once it is assembled
                          Carrier Thickness, inch (mm)                              0.001 (0.025)                            ASTM D374
                                                                                                                                                                          to the heat sink
                                                                                 0.0025              0.005                                                                Offered in two thicknesses to accommodate
                          Polymer Thickness, inch (mm)                                                                       ASTM D374
                                                                                 (0.064)            (0.127)                                                               a range of applications
                                                                                 0.0035              0.006
                          Overall Thickness, inch (mm)                                                                       ASTM D374
                                                                                 (0.089)             (0.15)                                                            APPLICATION
                                                                                                                                                                       THERMFLOW T766 material is inherently tacky
                          Thermal Impedance, °C-in /W               2
                                                                                                                            ASTM D5470
                                                                                             0.04                                                                      on the light gray polymer film side for easy
                          @ 70ºC, 50 psi                                                                                      modified
                                                                                                                                                                       attachment to the heat sink or thermal spreader.
                                                                                         Polymer                                                                       The metal foil side of the material is left exposed
           THERMAL




                          Apparent Thermal                                                 0.7                              ASTM D5470                                 for contact with the electronic component to be
                          Conductivity, W/m-K                                            Carrier                              modified                                 cooled. The dry nature of the foil side enables
                                                                                           75                                                                          easy removal of the heat sink for rework on the
                                                                                                                                                                       assembly. T766 pads are supplied kiss-cut on
                          Phase Change Temperature                                                                                                                     rolls for easy installation.
                                                                                            51-58                           ASTM D3418
                          Range, °C
                          Operating Temperature                                                                                                                        If rework is needed, the T766 pads can be
                                                                                       -60 to +125                                   ---                               removed from the heat sink at the light gray
                          Range, °C
                                                                                                                                                                       polymer interface using a single-edged razor, and
                                                                                                                                                                       then cleaning the heat sink surface with
           MECH




                          Specific Gravity                                                    3.0                            ASTM D792                                 isopropanol (IPA) solvent.



                                                                    North America• 77 Dragon Court, Woburn, MA 01888-4014 TEL +(1) 781-935-4850 FAX +(1) 781-933-4318
 www.chomerics.com                                                                Europe• Marlow, Bucks, UK TEL +(44) 1628 404000 FAX +(44) 1628 404090
                                                                                    Asia Pacific • Hong Kong TEL +(852) 2 428 8008 FAX +(852) 2 423 8253
                                                                              South America• São Paulo, Brazil TEL +(55) 11 3917 1099 FAX +(55) 11 3917 0817


NOTICE: The information contained herein is to the best of our knowledge true and accurate. However, since the varied conditions of potential use are beyond our control, all recommendations or suggestions are presented without guarantee or responsibility
on our part and users should make their own tests to determine the suitability of our products in any specific situation. This product is sold without warranty either expressed or implied, of fitness for a particular purpose or otherwise, except that this
product shall be of standard quality, and except to the extent otherwise stated on Chomerics’ invoice, quotation, or order acknowledgement. We disclaim any and all liability incurred in connection with the use of information contained herein, or
otherwise. All risks of such are assumed by the user. Furthermore, nothing contained herein shall be construed as a recommendation to use any process or to manufacture or to use any product in conflict with existing or future patents covering any product or
material or its use.


                                                                                                                                                                                                                                     1/24/2007