APPLICATION BULLETIN ® Mailing Address: PO Box 11400 • Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd. • Tucson, AZ 85706 Tel: (602) 746-1111 • Twx: 910-952-111 • Telex: 066-6491 • FAX (602) 889-1510 • Immediate Product Info: (800) 548-6132 THERMAL AND ELECTRICAL PROPERTIES OF SELECTED PACKAGING MATERIALS ©1991 Burr-Brown Corp. MATERIAL NOM LOW HIGH NOM LOW HIGH TCR (10–6/°C) ALUMINUM 6.02 5.63 6.38 23.9 19.4 25 4290 ANTIMONY 0.620 0.481 0.648(β) 8.46 10.8 ARSENIC 1.28 1.08(α) 1.37(β) BARIUM 0.468 BERYLLIUM 5.10 4.04 5.54(β) 12 0.201(k) 0.134(a) 0.233(b) 13 BORON 0.696 0.478(α) 0.808(β) 8.3 CADMIUM 2.46(k) 2.11(g) 2.62(d) 29.9 22 BISMUTH ELEMENTS THERMAL EXPANSION (10–6/°C) RESISTIVITY AT 20°C (µΩ-cm) 2.66 4.7 33.3 18 50.0 25000 5.9 1.8 x 1012(m) 4200 5.10 3.20 5.23 0.0404(j) 58.9(z) CESIUM 0.912 97 CHROMIUM(k) 2.38 6.1 3000 COBALT(k) 2.54 12 6040 6.24 COPPER 10.2 17 6800 1.673 GALLIUM 1.04(e) 1.53 1.18 GOLD (10.2 oz. troy/in3) 8.08 HAFNIUM 0.584 0.569(α) INDIUM(k) 2.08 1.94(α) 4160 0.54 3.43 1375(l) 4.32 20.0 2.24(f) 18 56.8 1.69(β) 5.9 102 - 107(t) 14.2 4000 0.592(β) 5.9 3800 2.12(β) 32 32.4 8.37 3.73 6.8 3925 5.3 2.04 1.85(h) 2.20(β) 11.7 6510 9.71 0.897 0.874(α) 0.904(β) 29.3 3360 20.65 25 16500 4.46 MAGNESIUM 3.96 MANGANESE 0.198 22 185 MOLYBDENUM 3.50 5.4 5.17 NICKEL 2.31 NIOBIUM 1.36 7.1 OSMIUM(k) 1.55 4.7 4200 9.5 PALLADIUM 1.82 11.9 3770 10.8 2.10(α) .0064(j) PHOSPHORUS 2.39(β) 13 .307(k) 6900 12.5 1017 126 1.82 8.8 3927 9.83 RHENIUMk 1.22 6.7 3950 19.3 RHODIUM 3.81 8.3 4200 4.51 RUBIDIUM 1.48 90 12.5 9.6 7.6(l) SELENIUM SILICON 2.97 0.033(d) 3.78 0.013(j) 0.115(g) 38 2.1 4.27(β) 3.5111(AB) SILVER 10.9 STRONTIUM 0.899 0.826(α) 0.924(β) 19.6 SULFUR(k) 0.0069 0.0039(α) 0.0073(β) 12(AC) 2.9 102 7.4 4100 to 108(t) 1.59 23.0 65 2 x 1023(m) NOTES: Values at 20°C unless otherwise specified. (α) At 100°C. (β) At 0°C. (a) || to triangle axis. (b) ⊥ to triangle axis. (c) Average value; graphite varies from 2.0 to 5.6 depending on type and orientation. Pyrolytic graphite is 0.16 and 50 ⊥ and || to layer planes. (d) Crystalline, ⊥ to c-axis; polycrystalline = 0.006W/in-°C. (e) || to aaxis. (f) || to b-axis. (g) || to c-axis. (h) Armco iron. (i) White phosphorous. (j) Amorphous. (k) Polycrystalline. (l) Resistivity at 0°C. (m) Intrinsic value, actual value sensitive to purity. (t) With 1021/cm3 to 1014/cm3 impurity concentration. (z) Type IIa diamond. (AB) Measured by J. Naylor. (AC) Crystalline, amorphous ≈ 106µΩ-cm. © 1991 Burr-Brown Corporation AB-030 7 8 9 6.84 PLATINUM RUTHENIUM 6 2.19 IRON (k) 5 13.0 IRIDIUM LEAD 4 6.83 3.70(c) GERMANIUM 3 106.8 CARBON (α) 2 41.7 CALCIUM 0.404(g) 1 Printed in U.S.A. April, 1991 Application Bulletin Number 30 THERMAL CONDUCTIVITY (W/in-°C) 10 11 12 13 14 15 16 THERMAL AND ELECTRICAL PROPERTIES OF SELECTED PACKAGING MATERIALS (CONT) THERMAL CONDUCTIVITY (W/in-°C) NOM LOW HIGH ELEMENTS MATERIAL TANTALUM 1.46 6.5 TELLURIUM 0.150 17 TIN 1.70(k) 1.31(g) 1.89(d) 23 TITANIUM(k) 0.556 0.526(α) 0.569(β) 8.5 TUNGSTEN 4.39 4.14 4.50 4.3 VANADIUM 0.780 ZINC(k) 2.95 ZIRCONIUM 0.576 EPOXIES ORGANIC GLASS-EPOXY (PC-G10) KAPTON 0.589 0.0042 0.035 0.0032 RTV 0.0053 0.0085 0.004 0.008 930 TEFLON 0.0056 0.0296 83 MYLAR 0.0045 0.0073 0.42(w) 0.85(x) RESISTIVITY AT 20°C [µΩ-cm] 12.4 2 x 105 20 25 4700 4.2 4.5 5240 11.5 47.8 5.6 24.8-26.0 40 5.6 (n) 0.0054 PARYLENE 3830 17 0.554 0.0039 NYLON TCR [10–6/°C] 7.7 0.08 AIR 4190 5.8 4400 41.0 11.0 60 1021(m) 10(n) 15(n) 1021(m) 34 40 1024(m) 82.8 128 1020(m) 35 69 1022(m) 3 x 1015(m) 50 162 1024(m) 60 95 1021(m) 6.5 7.3 18 21 6.5 8.7 0.00066 0.53(v) Al2O3 MISCELLANEOUS THERMAL EXPANSION (10–6/°C) NOM LOW HIGH BRASS(p) 2.95 BeO 6.0 EUTECTIC (Au-Si) MP 370°C 5.5 5.5 6.7(v) 7.1 8.0 2.53 2.6 6.4 16 EUTECTIC (Au-Ge) MP 356°C 6.7 12.6 0.085 GLASS(y) 0.010 8 12 127 x 106 0.037 0.55 12.4 1024(m) 0.425 5.5 KOVAR-42 0.28 4.9 MANGANIN 0.564 0.523 0.635 MICA 0.011 0.009 0.017 QUARTZ (SiO2) 0.035 0.19(β)(d) 0.37(β)(g) 0.55 SAPPHIRE 0.821 0.691 1.0 6.67(q) 78 ±15 0.30310 0.94501 44 32.4 48.6 1021(m) 5.0(r) 8.33(s) 1025(m) 1024(m) 23 1.2 0.35303 STEEL, STAINLESS 49.0 18.7 1.0 STEEL (1008) 2.6 0.159 KOVAR SOLDER (60/40) 6.4 1022(m) 13.7 EUTECTIC (Au-Sn) MP 280°C FERRITE 5 x 1021(m) 2000 13.5 12 6510 11 18304 170(AA) 112(AA) NOTES: Values at 20°C unless otherwise specified. (α) At 100°C. (β) At 0°C. (d) ⊥ to c-axis. (e) || to a-axis. (f) || to b-axis. (g) || to c-axis. (k) Polycrystalline. (m) Intrinsic value; actual value sensitive to purity. (n) 40-300 for vertical axis. (p) Yellow brass. (q) || to c-axis at 50°C. (r) ⊥ to c-axis at 50°C. (s) || to c-axis at 500°C. (v) 96%. (w) 90%. (x) 99.5%. (y) See quartz. (AA) Nichrome 60% Ni, 25% Fe, 15% Cr. THERMAL CONDUCTIVITY (K) CONVERSIONS CONVERSION UNIT cal watt watt BTU kg-cal watt s-cm-°C cm-°C in-°C hr-ft-°F hr-m-°C m-°C 1 cal/s-cm-°C 1.0 4.186 10.63 241.9 360.0 418.6 1 watt/cm-°C 0.2389 1.0 2.540 57.8 86.00 100 1 watt/in-°C 0.09405 0.3937 1.0 22.75 33.86 39.37 1 BTU/hr-ft-°F 4.134(10–3) 0.01730 0.0440 1.0 1.488 1.730 1 kg-cal/hr-m-°C 2.778(10–3) 0.01163 0.0295 0.672 1.0 1.163 0.002389 0.01 0.0254 0.578 0.8600 1.0 ORIGINAL UNIT 1 watt/m-°C EXAMPLE 232 (BTU/hr-ft-°F) x 0.0440 = 10.2 (watt/°C-in) FORMULAE Length (in) °C/W = Area (in2) • K (W/in-°C) The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant any BURR-BROWN product for use in life support devices and/or systems. 2