INTERCHANGEABLE WAFER THERMISTORS FEATURES: * HIGH ACCURACY * HIGH STABILITY * INTERCHANGEABLE FROM 0C TO 70C OPTIONS: * * * * * CUSTOMIZED LEAD AND TERMINATION CONFIGURATIONS NON-STANDARD RESISTANCE VALUES NON-STANDARD TOLERANCES NON-STANDARD OPERATING RANGES NON-STANDARD RESISTANCE VS TEMPERATURE CURVES Sensor Scientific interchangeable wafer thermistors are ideally suited for applications requiring a highprecision temperature sensor, without a high cost. Interchangeability eliminates the burden of individual calibration. Units are available in resistance values from 2k ohms to 100k ohms @ 25C. The available resistance vs. temperature curves (SSi curves C, D, E & Y) are industry-standard. Interchangeable wafer thermistors are widely used in the medical, automotive, aerospace, HVAC, marine electronic, and instrumentation industries in a variety of temperature measurement, control, and compensation applications. If a standard unit does not meet your needs, customized tolerances, resistance values, temperature ranges, and termination options are available. Design assistance is also available. Part Number Resistance @ 25 Deg C ohms 0.2 Deg tolerance 0.5 Deg tolerance 1.0 Deg C tolerance R. vs. Temp. Curve Lead Diameter inches Lead Length inches 2000 WM202C WN202C WP202C C 0.0126 1.5 min 2252 WM222C WN222C WP222C C 0.0126 1.5 min 3000 WM302C WN302C WP302C C 0.0126 1.5 min 4000 WM402C WN402C WP402C C 0.0126 1.5 min 5000 WM502C WN502C WP502C C 0.0126 1.5 min 10000 WM103C WN103C WP103C C 0.0126 1.5 min 10000 WM103Y WN103Y WP103Y Y 0.0126 1.5 min 30000 WM303D WN303D WP303D D 0.008 2.0 min 30000 WM303E WN303E WP303E E 0.0126 1.5 min 50000 WM503D WN503D WP503D D 0.008 2.0 min 100000 WM104D WN104D WP104D D 0.008 2.0 min. -- Dissipation Constant: 1.5 mW/C Typ. in still air -- -- Time Constant: 10 sec. Typ. in still air -- Call us toll-free at 800-524-1610 (in the US) -- or check us out on the web at www.sensorsci.com Sensor Scientific, Inc. * 6 Kings Bridge Road - Fairfield, New Jersey 07004 * Phone: (973) 227-7790 * Fax: (973) 227-8063 eMail: sales@sensorsci.com * web: www.sensorsci.com Sensor Scientific, Inc. Resistance Multiplier and Alpha Values for Standard and Interchangeable Wafers Material Curve Available Resistance Range at 25C in ohms Alpha at 25C Temp F -40.0 -31.0 -22.0 -13.0 -4.0 5.0 14.0 23.0 32.0 41.0 50.0 59.0 68.0 77.0 86.0 95.0 104.0 113.0 122.0 131.0 140.0 149.0 158.0 167.0 176.0 185.0 194.0 203.0 212.0 221.0 230.0 239.0 248.0 257.0 266.0 275.0 284.0 293.0 302.0 Temp C -40.0 -35.0 -30.0 -25.0 -20.0 -15.0 -10.0 -5.0 0.0 5.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0 45.0 50.0 55.0 60.0 65.0 70.0 75.0 80.0 85.0 90.0 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 Material Curve Available Resistance Range at 25C in ohms Alpha at 25C Temp F -40.0 -31.0 -22.0 -13.0 -4.0 5.0 14.0 23.0 32.0 41.0 50.0 59.0 68.0 77.0 86.0 95.0 104.0 113.0 122.0 131.0 140.0 149.0 158.0 167.0 176.0 185.0 194.0 203.0 212.0 221.0 230.0 239.0 248.0 257.0 266.0 275.0 284.0 293.0 302.0 Temp C -40.0 -35.0 -30.0 -25.0 -20.0 -15.0 -10.0 -5.0 0.0 5.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0 45.0 50.0 55.0 60.0 65.0 70.0 75.0 80.0 85.0 90.0 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 A 100 to 2,000 B 30 to 500 C 1,000 to 25,000 D 10,000 to 100,000 E 1,000 to 50,000 -3.84% -3.51% -4.39% -4.67% -4.30% Multiplier 21.30 16.07 12.23 9.389 7.267 5.670 4.457 3.530 2.815 2.260 1.827 1.485 1.215 1.000 0.8275 0.6884 0.5757 0.4838 0.4085 0.3466 0.2953 0.2527 0.2172 0.1874 0.1623 0.1411 0.1231 0.1078 0.0947 0.0834 0.0738 0.0654 0.0582 0.0519 0.0464 0.0416 0.0374 0.0337 0.0304 Alpha -5.7 -5.6 -5.4 -5.2 -5.0 -4.9 -4.7 -4.6 -4.5 -4.3 -4.2 -4.1 -4.0 -3.8 -3.7 -3.6 -3.5 -3.4 -3.3 -3.2 -3.2 -3.1 -3.0 -2.9 -2.8 -2.8 -2.7 -2.6 -2.6 -2.5 -2.4 -2.4 -2.3 -2.3 -2.2 -2.2 -2.1 -2.1 -2.0 Multiplier 16.10 12.48 9.746 7.671 6.081 4.855 3.902 3.157 2.569 2.104 1.733 1.435 1.195 1.000 0.8411 0.7108 0.6035 0.5147 0.4408 0.3791 0.3273 0.2837 0.2469 0.2156 0.1889 0.1660 0.1465 0.1296 0.1150 0.1024 0.0914 0.0818 0.0734 0.0660 0.0596 0.0538 0.0488 0.0443 0.0403 Alpha -5.2 -5.0 -4.9 -4.7 -4.6 -4.4 -4.3 -4.2 -4.1 -3.9 -3.8 -3.7 -3.6 -3.5 -3.4 -3.3 -3.2 -3.1 -3.1 -3.0 -2.9 -2.8 -2.7 -2.7 -2.6 -2.5 -2.5 -2.4 -2.4 -2.3 -2.2 -2.2 -2.1 -2.1 -2.0 -2.0 -1.9 -1.9 -1.9 Multiplier 33.61 24.24 17.68 13.03 9.701 7.291 5.530 4.232 3.265 2.539 1.990 1.571 1.249 1.000 0.8056 0.6530 0.5325 0.4367 0.3601 0.2985 0.2487 0.2082 0.1752 0.1480 0.1256 0.1070 0.0916 0.0787 0.0678 0.0587 0.0510 0.0444 0.0388 0.0341 0.0300 0.0264 0.0234 0.0207 0.0185 Alpha -6.7 -6.4 -6.2 -6.0 -5.8 -5.6 -5.4 -5.3 -5.1 -5.0 -4.8 -4.7 -4.5 -4.4 -4.3 -4.1 -4.0 -3.9 -3.8 -3.7 -3.6 -3.5 -3.4 -3.3 -3.2 -3.2 -3.1 -3.0 -2.9 -2.9 -2.8 -2.7 -2.7 -2.6 -2.5 -2.5 -2.4 -2.4 -2.3 Multiplier 40.64 28.89 20.76 15.08 11.06 8.193 6.123 4.617 3.510 2.690 2.078 1.617 1.267 1.000 0.7943 0.6349 0.5106 0.4130 0.3360 0.2748 0.2259 0.1867 0.1550 0.1293 0.1084 0.0912 0.0771 0.0654 0.0558 0.0477 0.0409 0.0353 0.0305 0.0264 0.0230 0.0201 0.0176 0.0154 0.0136 Alpha -6.9 -6.7 -6.5 -6.3 -6.1 -5.9 -5.7 -5.6 -5.4 -5.2 -5.1 -4.9 -4.8 -4.7 -4.5 -4.4 -4.3 -4.2 -4.1 -4.0 -3.9 -3.8 -3.7 -3.6 -3.5 -3.4 -3.3 -3.2 -3.2 -3.1 -3.0 -2.9 -2.9 -2.8 -2.8 -2.7 -2.6 -2.6 -2.5 F 100,000 to 300,000 T 2,000 to 50,000 X 15 to 250 Y 1,000 to 10,000 -4.81% -3.89% -3.34% -4.03% Multiplier 43.76 31.00 22.19 16.04 11.71 8.628 6.413 4.807 3.632 2.766 2.122 1.640 1.276 1.000 0.7885 0.6256 0.4993 0.4008 0.3236 0.2626 0.2142 0.1756 0.1447 0.1198 0.0996 0.0832 0.0697 0.0587 0.0496 0.0421 0.0359 0.0307 0.0263 0.0226 0.0196 0.0169 0.0147 0.0128 0.0112 Alpha -7.0 -6.8 -6.6 -6.4 -6.2 -6.0 -5.9 -5.7 -5.5 -5.4 -5.2 -5.1 -5.0 -4.8 -4.7 -4.6 -4.5 -4.3 -4.2 -4.1 -4.0 -3.9 -3.8 -3.7 -3.6 -3.6 -3.5 -3.4 -3.3 -3.2 -3.2 -3.1 -3.0 -3.0 -2.9 -2.8 -2.8 -2.7 -2.7 Multiplier 22.26 16.70 12.66 9.675 7.460 5.800 4.545 3.588 2.853 2.284 1.841 1.493 1.218 1.000 0.8253 0.6848 0.5712 0.4788 0.4032 0.3411 0.2899 0.2474 0.2120 0.1824 0.1575 0.1365 0.1187 0.1036 0.0907 0.0797 0.0702 0.0621 0.0550 0.0489 0.0436 0.0389 0.0349 0.0313 0.0282 Alpha -5.8 -5.6 -5.5 -5.3 -5.1 -5.0 -4.8 -4.7 -4.5 -4.4 -4.3 -4.1 -4.0 -3.9 -3.8 -3.7 -3.6 -3.5 -3.4 -3.3 -3.2 -3.1 -3.0 -3.0 -2.9 -2.8 -2.8 -2.7 -2.6 -2.6 -2.5 -2.4 -2.4 -2.3 -2.3 -2.2 -2.2 -2.1 -2.1 Multiplier 14.52 11.33 8.908 7.061 5.640 4.538 3.677 2.999 2.461 2.033 1.688 1.410 1.185 1.000 0.8484 0.7232 0.6194 0.5327 0.4602 0.3991 0.3475 0.3037 0.2664 0.2345 0.2071 0.1835 0.1631 0.1454 0.1300 0.1166 0.1048 0.0945 0.0854 0.0773 0.0702 0.0639 0.0583 0.0533 0.0488 Alpha -5.1 -4.9 -4.7 -4.6 -4.4 -4.3 -4.1 -4.0 -3.9 -3.8 -3.7 -3.5 -3.4 -3.3 -3.2 -3.1 -3.1 -3.0 -2.9 -2.8 -2.7 -2.7 -2.6 -2.5 -2.5 -2.4 -2.3 -2.3 -2.2 -2.2 -2.1 -2.1 -2.0 -2.0 -1.9 -1.9 -1.8 -1.8 -1.7 Multiplier 23.98 17.93 13.52 10.29 7.893 6.103 4.755 3.732 2.949 2.346 1.879 1.514 1.227 1.000 0.8196 0.6754 0.5594 0.4656 0.3893 0.3271 0.2760 0.2339 0.1990 0.1700 0.1458 0.1255 0.1084 0.0940 0.0817 0.0713 0.0624 0.0548 0.0482 0.0426 0.0377 0.0335 0.0298 0.0266 0.0238 Alpha -5.9 -5.7 -5.6 -5.4 -5.2 -5.1 -4.9 -4.8 -4.6 -4.5 -4.4 -4.3 -4.1 -4.0 -3.9 -3.8 -3.7 -3.6 -3.5 -3.4 -3.4 -3.3 -3.2 -3.1 -3.0 -3.0 -2.9 -2.8 -2.8 -2.7 -2.6 -2.6 -2.5 -2.5 -2.4 -2.4 -2.3 -2.3 -2.2 Multiplier 29.48 21.63 16.02 11.98 9.033 6.869 5.266 4.068 3.166 2.481 1.958 1.556 1.243 1.000 0.8089 0.6580 0.5382 0.4425 0.3656 0.3036 0.2533 0.2122 0.1786 0.1510 0.1281 0.1092 0.0934 0.0801 0.0690 0.0597 0.0517 0.0450 0.0393 0.0344 0.0302 0.0266 0.0235 0.0208 0.0184 Alpha -6.3 -6.1 -5.9 -5.7 -5.6 -5.4 -5.2 -5.1 -4.9 -4.8 -4.7 -4.5 -4.4 -4.3 -4.2 -4.1 -4.0 -3.9 -3.8 -3.7 -3.6 -3.5 -3.4 -3.3 -3.2 -3.2 -3.1 -3.0 -2.9 -2.9 -2.8 -2.8 -2.7 -2.6 -2.6 -2.5 -2.5 -2.4 -2.4