thermal sensors NT73 negative tempco thermistor EU features Twelve standard resistance values Products with lead-free terminations meet EU RoHS requirements. EU RoHS regulation is not intended for Pb-glass contained in electrode, resistor element and glass. dimensions and construction L Type Dimensions inches (mm) c c (Inch Size Code) L Wc d t 1J .063.008 .031.004 .012.004 .012.004 .02.004 (0603) (1.60.2) (0.80.1) (0.30.1) (0.30.1) (0.50.1) W +.008 +.008 .012 .02 Solder 2A .079.008 .049.004 .016.008 -.004 -.004 Plating +0.2 +0.2 (0805) (2.00.2) (1.250.1) (0.40.2) (0.3 ) (0.5 ) -0.1 -0.1 Ni t +.008 Plating .016 2B .126.008 .063.008 .02.008 -.004 .024.004 (1206) (3.20.2) (1.60.2) (0.50.3) +0.2 (0.60.1) (0.4 ) -0.1 d Protective Resistive Inner Coating Film Electrode Ceramic Substrate ordering information NT73 2A T TD 103 K 3800 J Size Termination Nominal Resistance B Constant B Constant Type Packaging Code Material Resistance Tolerance Nominal Tolerance 1J: 0603 T: Sn TD: 7 2 significant J: 5% 3200 H: 3% paper tape figures + 1 2A: 0805 (Other termination K: 10% 3500 J: 5% (5,000 multiplier styles may be 2B: 1206 L: 15% 3700 K: 10% pieces/reel) available, please 3800 contact factory for 3950 options) 4100 applications and ratings Power Operating Part Resistance Resistance B Constant B Constant Rating Temperature Designation 25C Tolerance 25C/75C Tolerance (mW) Range 6.8k 10% 3500K 10k 5% 15k 3800K 3% 10k 3700K 20k 22k J: 5% NT731J 5 30k K: 10% 33k 5% 3800K -55C 47k 68k to 100k +125C 47k 3% 4100K 1k 3200K 2k K: 10% 10% 2.2k L: 15% 2.4k NT732A 5 3500K 3.3k J: 5% K: 10% 4.7k 5% L: 15% 5k For further information on packaging, please refer to Appendix A. Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 11/28/17 236 KOA Speer Electronics, Inc. 199 Bolivar Drive Bradford, PA 16701 USA 814-362-5536 Fax: 814-362-8883 www.koaspeer.com NT73 negative tempco thermistor applications and ratings (continued) Power Operating Part Resistance Resistance B Constant B Constant Rating Temperature Designation 25C Tolerance 25C/75C Tolerance (mW) Range 10% K:10% L: 15% 3800K 6.8k 10k 3500K 15k 10k 20k 22k 30k 5% 3800K 33k 47k 68k 100k J: 5% NT732A 150k 5 K: 10% 50k 3950K L: 15% 10k 15k 20k -55C 22k to 3% 30k 4100K +125C 33k 47k 68k 100k 150k 1k 3200K 2.2k K: 10% 3.3k 3500K 10% 4.7k L: 15% 6.8k 10k NT732B 5 22k J: 5% 33k 3800K K: 10% 5% 47k 68k L: 15% 100k Thermal dissipation constant - in the atmosphere - (reference) 1J: 2.0mW/C, 2A: 2.8mW/C, 2B: 3.0mW/C environmental applications RT/R25 Ratio vs. B Constant Temperature Characteristics Resistance 1k 5k 10k 100k 10k Resistance 1k 5k 10k 100k 10k 10,000,000 B Constant 3200K 3500K 3700K 3800K 4100K B Constant 3200K 3500K 3700K 3800K 4100K Temp. (C) k k k k Temp. (C) k k k k 1,000,000 -55 38770 273.24 638.23 7692.5 1203.1 40 604.07 2.8809 5.5500 54.959 5.1999 -50 28840 197.67 465.81 5414.6 820.76 45 515.10 2.4202 4.6100 45.484 4.2349 100k 100,000 -45 21706 144.85 343.25 3864.5 568.09 50 441.00 2.0421 3.8500 37.823 3.4692 -40 16517 107.43 255.22 2794.3 398.57 55 379.00 1.7302 3.2300 31.594 2.8585 10k -35 12698 80.577 191.37 2045.2 283.20 60 326.90 1.4718 2.7200 26.506 2.3682 10,000 -30 9857.0 61.077 144.64 1514.1 203.64 65 282.95 1.2568 2.3100 22.330 1.9721 3800k -25 7721.2 46.759 110.13 1133.0 148.07 70 245.72 1.0771 1.9700 18.886 1.6504 1k -20 6100.5 36.137 83.710 856.49 108.37 75 214.08 0.92637 1.6800 16.035 1.3877 1,000 -15 4858.7 28.173 64.190 653.63 80.182 80 187.08 0.79937 1.4500 13.663 1.1724 3800k -10 3899.0 22.147 49.640 503.31 59.943 85 163.96 0.69199 1.2500 11.682 0.99491 100 -5 3151.3 17.546 38.680 390.86 45.252 90 144.11 0.60087 1.0800 10.022 0.84926 3200k 0 2564.2 14.004 30.370 305.97 34.478 95 127.00 0.52329 0.94000 8.6257 0.72802 5 2099.9 11.256 23.970 241.34 26.473 100 112.21 0.45701 0.82000 7.4466 0.62662 10 -50 -250525075 100 125 10 1730.0 9.1063 19.070 191.73 20.506 105 99.377 0.40016 0.72000 6.4466 0.54156 15 1433.5 7.4135 15.270 153.36 16.016 110 88.224 0.35129 0.63000 5.5968 0.46982 Temperature (C) 20 1194.2 6.0712 12.320 123.46 12.608 115 78.501 0.30915 0.56000 4.8721 0.40906 25 1000.0 5.0000 10.000 100.00 10.000 120 70.004 0.27272 0.49000 4.2523 0.35741 30 841.48 4.1398 8.1700 81.470 7.9880 125 62.558 0.24114 0.44000 3.7207 0.31332 35 711.39 3.4451 6.7100 66.739 6.4242 Performance Characteristics Requirement R (%+0.05) Parameter Limit Typical Test Method Within specified Resistance 25C tolerance Within specified B Constant +25C/+75C tolerance Other: 1%, Other: 0.5%, Resistance to Solder Heat 260C 5C, 10 seconds 1 second 2%:1k 1%:1k Rapid Change of Temperature 3.0% 1.3% -55C (30 minutes),+125C (30 minutes), 50 cycles Moisture Resistance 3.0% 1.1% 40C 2C, 90 - 95% RH, 1000 hours Load Life 3.0% 2.5% 80C 2C, DC5mW, 1000 hours High Temperature Exposure 3.0% 1.6% 80C, 1000 hours Confirming resistance drift is recommended since this product has a tendency to have bigger resistance change than general flat chip over 80C. Please pay attention not to be applied ESD, it may cause of resistance change. Actual Value (Out of Guarantee) Test Items Reference Test Method High Temperature Exposure 7.0% 125C, 1000 hours ESD 500V Human model, 100 pF 1.5 k Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 12/12/19 KOA Speer Electronics, Inc. 199 Bolivar Drive Bradford, PA 16701 USA 814-362-5536 Fax: 814-362-8883 www.koaspeer.com 237 Resistance ( ) thermal sensors