1733 Reader's Spreads pg1-203:document 1/27/09 4:12 PM Page 152 NT73 negative tempco thermistor EU features Anti-leaching nickel barrier terminations Twelve standard resistance values Suitable for reflow and wave soldering Marking: 1J no marking on pink body, 2A and 2B black three digit on pink body color • Products with lead-free terminations meet EU RoHS requirements. Pb located in glass material, electrode and resistor element is exempt per Annex 1, exemption 5 of EU directive 2005/95/EC circuit protection • • • • dimensions and construction L c Type c (Inch Size Code) W Solder Plating Ni Plating t d Protective Coating L Dimensions inches (mm) W c d t 1J (0603) .063±.008 .031±.004 .012±.004 .012±.004 (1.6±0.2) (0.8±0.1) (0.3±0.1) (0.3±0.1) .02±.004 (0.5±0.1) 2A (0805) .079±.008 .049±.004 .016±.008 (2.0±0.2) (1.25±0.1) (0.4±0.2) .012 +.008 -.004 +0.2 ) -0.1 +.008 -.004 (0.5 +0.2 -0.1 ) 2B (1206) .126±.008 .063±.008 (3.2±0.2) (1.6±0.2) .016 +.008 -.004 +0.2 ) -0.1 .024±.004 (0.6±0.1) Resistive Inner Film Electrode .02±.008 (0.5±0.3) (0.3 (0.4 .02 Ceramic Substrate ordering information New Part # NT73 Type 2A T Size Code 1J: 0603 2A: 0805 2B: 1206 Termination Material T: Sn (Other termination styles may be available, please contact factory for options) TD Packaging TD: 7" paper tape (5,000 pieces/reel) 103 K 3800 J Nominal Resistance 2 significant figures + 1 multiplier Resistance Tolerance J: ±5% K: ±10% L: ±15% B Constant Nominal 3200 3500 3700 3800 3950 4100 B Constant Tolerance H: ±3% J: ±5% K: ±10% applications and ratings Part Designation Resistance @ 25°C NT731J 6.8kΩ 10kΩ 15kΩ 10kΩ 20kΩ 22kΩ 30kΩ 33kΩ 47kΩ 68kΩ 100kΩ 47kΩ Resistance Tolerance B Constant @ 25°C/75°C 3500K 3800K 3700K J: ±5% K: ±10% B Constant Tolerance Power Rating (mW) Operating Temperature Range 5 -55°C to +125°C ±10% ±5% ±3% 3800K ±5% 4100K ±3% 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. 154 12/31/08 KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com 1733 Reader's Spreads pg1-203:document 1/27/09 4:12 PM Page 153 PMS 300 neg. Black neg. NT73 negative tempco thermistor applications and ratings (continued) Resistance @ 25°C Resistance Tolerance 1kΩ 2kΩ 2.2kΩ 2.4kΩ 3.3kΩ 4.7kΩ 5kΩ 6.8kΩ 10kΩ 15kΩ 10kΩ 20kΩ 22kΩ 30kΩ 33kΩ 47kΩ 68kΩ 100kΩ 150kΩ 50kΩ 10kΩ 15kΩ 20kΩ 22kΩ 30kΩ 33kΩ 47kΩ 68kΩ 100kΩ 150kΩ 1kΩ 2.2kΩ 3.3kΩ 4.7kΩ 6.8kΩ 10kΩ 22kΩ 33kΩ 47kΩ 68kΩ 100kΩ NT732A NT732B B Constant @ 25°C/75°C 3200K K: ±10% L: ±15% ±10% J: ±5%; K: ±10% L: ±15% 3500K K:±10%; L: ±15% 3800K 3500K ±5% J: ±5% K: ±10% L: ±15% 3500K J: ±5% K: ±10% L: ±15% 3800K Resistance (Ω) 1k Ω 5k Ω 10k Ω 100k Ω 10kΩ Resistance 1k Ω 5k Ω 10k Ω 100k Ω 10kΩ B Constant 3200K 3500K 3700K 3800K 4100K B Constant 3200K 3500K 3700K 3800K 4100K kΩ kΩ kΩ kΩ Ω kΩ kΩ Ω kΩ kΩ Temp. (°C) Temp. (°C) -55 -50 -45 -40 -35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30 35 10kΩ 1kΩ 3800k 100 3200k 50 75 25 Temperature (°C) 100 125 Performance Characteristics Parameter Resistance ±5% RT/R25 Ratio vs. B Constant 100kΩ 0 ±10% 5 Resistance -25 ±3% 3200K K: ±10% L: ±15% 3800k 10 -50 5 -55°C to +125°C 4100K 1,000,000 1,000 ±5% 3950K 10,000,000 10,000 ±10% 3800K environmental applications Temperature Characteristics 100,000 Operating Temperature Range Power Rating (mW) B Constant Tolerance circuit protection Part Designation Requirement ∆ R Limit Typical 38770 28840 21706 16517 12698 9857.0 7721.2 6100.5 4858.7 3899.0 3151.3 2564.2 2099.9 1730.0 1433.5 1194.2 1000.0 841.48 711.39 273.24 197.67 144.85 107.43 80.577 61.077 46.759 36.137 28.173 22.147 17.546 14.004 11.256 9.1063 7.4135 6.0712 5.0000 4.1398 3.4451 638.23 465.81 343.25 255.22 191.37 144.64 110.13 83.710 64.190 49.640 38.680 30.370 23.970 19.070 15.270 12.320 10.000 8.1700 6.7100 7692.5 5414.6 3864.5 2794.3 2045.2 1514.1 1133.0 856.49 653.63 503.31 390.86 305.97 241.34 191.73 153.36 123.46 100.00 81.470 66.739 1203.1 820.76 568.09 398.57 283.20 203.64 148.07 108.37 80.182 59.943 45.252 34.478 26.473 20.506 16.016 12.608 10.000 7.9880 6.4242 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 604.07 515.10 441.00 379.00 326.90 282.95 245.72 214.08 187.08 163.96 144.11 127.00 112.21 99.377 88.224 78.501 70.004 62.558 2.8809 2.4202 2.0421 1.7302 1.4718 1.2568 1.0771 0.92637 0.79937 0.69199 0.60087 0.52329 0.45701 0.40016 0.35129 0.30915 0.27272 0.24114 5.5500 4.6100 3.8500 3.2300 2.7200 2.3100 1.9700 1.6800 1.4500 1.2500 1.0800 0.94000 0.82000 0.72000 0.63000 0.56000 0.49000 0.44000 54.959 45.484 37.823 31.594 26.506 22.330 18.886 16.035 13.663 11.682 10.022 8.6257 7.4466 6.4466 5.5968 4.8721 4.2523 3.7207 5.1999 4.2349 3.4692 2.8585 2.3682 1.9721 1.6504 1.3877 1.1724 0.99491 0.84926 0.72802 0.62662 0.54156 0.46982 0.40906 0.35741 0.31332 Note: RT/R25 ratio is the resistance at temperature (T) divided by the nominal resistance at 25°C. The RT/R25 ratio value is multiplied by the thermistor’s nominal 25°C value to determine the nominal resistance value at a given temperature in the chart above. Within specified tolerance –– B Constant Within specified tolerance –– Resistance to Solder Heat Rapid Change of Temperature Moisture Resistance Load Life High Temperature Exposure High Temperature Exposure ±1%, ±2%:1kΩ ±3.0% ±3.0% ±3.0% ±3.0% –– ±0.5%, ±1%:1kΩ ±1.3% ±1.1% ±2.5% ±1.6% 7 (Reference) Test Method 25°C +25°C/+75°C 260°C ± 5°C, 10 seconds ± 1 second -55°C (30 minutes),+125°C (30 minutes), 50 cycles 40°C ± 2°C, 90 - 95% RH, 1000 hours 80°C ± 3°C, DC5mW, 1000 hours 80°C, 1000 hours 125°C, 1000 hours Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 1/06/08 KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com 155