Guenter, try www.matweb.com if you know the name of the particular resin you're looking for. Here's an example of one I found (it's got a lot of info, besides CTE, and it's easier to read on the web site than here): Subcategory: Diallyl Phthalate (DAP); Thermoset; Key Words: Rogers DAP; Material Notes: Data provided by the manufacturer, Rogers Molding Materials Division, 1998. Ortho Resin Isomer (DAP). Used for critical, high-performance military and commercial electrical components where long-term reliability is demanded. PHYSICAL PROPERTIES VALUES COMMENTS US / Other Units Density, g/cc 1.67 ASTM D792 1.67 g/cc Apparent Bulk Density, g/cc 0.6 0.6 g/cc Linear Mold Shrinkage, cm/cm 0.006 .005-.007 Compression Molding. ASTM D955 0.006 in/in Water Absorption, % 0.65 48 hours, 50°C. ASTM D570 0.65 % MECHANICAL PROPERTIES VALUES COMMENTS US / Other Units Tensile Strength, Ultimate, MPa 52 ASTM D638 7,540 psi Flexural Modulus, GPa 6.9 ASTM D790 1,001 ksi Flexural Yield Strength, MPa 103 ASTM D790 14,935 psi Impact Strength, Izod, J/cm 0.21 Notched; ASTM D256A 0.39 ft-lb/in Compressive Yield Strength, MPa 145 ASTM D695 21,025 psi THERMAL PROPERTIES VALUES COMMENTS US / Other Units CTE, linear 20ºC, µm/m-°C 34 flow direction; ASTM D696 19 µin/in-°F Deflection Temperature at 1.8 MPa, ºC 163 ASTM D648A 325 °F Maximum Service Temperature, Air, °C 163 Deflection temperature at 1.8 MPa 325 °F Oxygen Index, % 24 ASTM D2863 24 % Processing Temperature, ºC 170 160-180°C (320-360°F) Mold temperature 338 °F ELECTRICAL PROPERTIES VALUES COMMENTS US / Other Units Dielectric Constant 4.5 wet, at 1 MHz. Wet value at 1 kHz is 4.7. 4.5 Dielectric Strength, kV/mm 17 Wet, short term. Wet, step-by-step value is 16 kV/mm (400 V/mil). ASTM D149 432 kV/in Dissipation Factor 0.025 Wet, at 1 MHz. Wet value at 1 kHz is 0.02. ASTM D150 0.025 Arc Resistance, sec 138 ASTM D495 138 sec Comparative Tracking Index, V 600 Lower Limit; UL746A, ASTM D3638 600 V |-----Original Message----- |From: Guenter Grossmann [mailto:[log in to unmask]] |Sent: Monday, October 16, 2000 1:20 AM |Subject: CTE | | |Hi folks | |Can somebody provide the CTE of glob-top resins and of plastic |IC packaging resins? | |Thanks a lot | |Guenter | |Guenter Grossmann |Swiss Federal Institute for Materials Testing and Research EMPA |Centre for Reliability |8600 Duebendorf |Switzerland | |Phone: xx41 1 823 4279 |Fax : xx41 1823 4054 |mail: [log in to unmask] | --------------------------------------------------------------------------------- TechNet Mail List provided as a free service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF TECHNET Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------