Standard Disc Style Features: Rugged, cost effective design -50C to 150C Operation Bare or epoxy coated Values from 100 to 20,000 Temperature measurement, control or compensation High sensitivity to changes in temperature Other tolerances and options available Standard Disc Style Description: MS standard disc style thermistors are ideal for use in those applications where low cost and a rugged design are desired. Thermistors are available either coated or uncoated and are available in a variety of resistance values, curves and tolerances to suit a wide variety of applications. Contact the factory for specific design or application information or the availability of options. MS Standard Disc Style Thermistors A (max.) B (max.) C (typ.) Part D t R () Matl* 25 Number AWG (mW/C) sec. in mm in mm in mm D1002K10 100 K 0.360 9.14 0.150 3.81 0.250 6.35 24 9 35 D2002K10 200 K 0.260 6.60 0.160 4.06 0.156 3.96 24 7 20 D2502K10 250 K 0.260 6.60 0.160 4.06 0.156 3.96 24 7 20 D5002K10 500 K 0.215 5.46 0.160 4.06 0.080 2.03 26 5 15 D1003K10 1,000 K 0.150 3.81 0.150 3.81 0.080 2.03 26 3 10 D1003Z10 1,000 Z 0.260 6.60 0.140 3.56 0.156 3.96 24 7 20 D2003Z10 2,000 Z 0.215 5.46 0.140 3.56 0.080 2.03 26 7 20 D2253Z10 2,252 Z 0.215 5.46 0.140 3.56 0.080 2.03 26 5 15 D3003Z10 3,000 Z 0.215 5.46 0.150 3.81 0.080 2.03 26 5 15 D5003Z10 5,000 Z 0.150 3.81 0.140 3.56 0.080 2.03 26 3 10 D1004Z10 10,000 Z 0.150 3.81 0.160 4.06 0.080 2.03 26 3 10 D2004Z10 20,000 Z 0.150 3.81 0.160 4.06 0.080 2.03 26 3 10 Standard resistance tolerances available are: 10%, 5%, 2% 25C *See R/T tables on page 57. Basic P/N Material Wire Type Tol. Code Point-match Temperature (C) (only used if other than 25C) Example: D1003K10-2 Curve Material, 1000 + 2% at 25C D5003Z10-5-100 Curve Material, 5k at 25C with tolerance rating of 5% at 100C 56 Temperature Sensor Products 1028 Graphite Road, St. Marys, PA 15857 8-7-13 precisionsensors.meas-spec.com Ph: 814.834.1541 Fax: 814.834.1556 www.meas-spec.comMS Resistance vs. Temperature Conversion Table Disc Style NTC Thermistor Material K Z Temperature Coef. -3.9 %/C -4.4 %/C 25C (25) Resistance Ratio 6.93 9.07 R /R 0 50 3498 3976 Beta ( ) 25/85 Temperature R Curve R Curve t t (F) (C) R (%/C) Dev. R (%/C) Dev. 25 25 -58 -50 39.46 6.2 8.2 66.75 7.1 5.5 -40 -40 21.68 5.8 6.8 33.56 6.6 4.3 -22 -30 12.38 5.4 5.6 17.67 6.2 3.5 -4 -20 7.389 5.1 4.4 9.697 5.8 2.7 14 -10 4.482 4.8 3.3 5.530 5.4 2.0 32 0 2.825 4.5 2.3 3.265 5.1 1.4 50 10 1.830 4.2 1.2 1.990 4.8 0.8 68 20 1.216 4.0 0.3 1.249 4.5 0.3 77 25 1.000 3.9 0.0 1.000 4.4 0.0 86 30 0.8270 3.7 0.6 0.8056 4.3 0.3 104 40 0.5747 3.5 1.4 0.5325 4.0 0.7 122 50 0.4074 3.3 2.2 0.3601 3.8 1.2 140 60 0.2942 3.2 3.0 0.2487 3.6 1.6 158 70 0.2161 3.0 3.6 0.1752 3.4 2.0 176 80 0.1612 2.9 4.3 0.1256 3.2 2.3 185 85 0.1401 2.8 4.6 0.1071 3.2 2.5 194 90 0.1221 2.7 4.9 0.09162 3.1 2.7 212 100 0.09376 2.6 5.5 0.06787 2.9 3.0 230 110 0.07292 2.5 6.1 0.05102 2.8 3.3 248 120 0.05738 2.3 6.7 0.03887 2.7 3.6 257 125 0.05112 2.3 6.9 0.03409 2.6 3.8 266 130 0.02999 2.5 3.9 284 140 0.02342 2.4 4.1 302 150 0.01849 2.3 4.4 This R/T Conversion Table is provided for reference only. MS uses the Steinhart-Hart equation to calculate the nominal Rt/R value. 1C tables are available upon request. 25 Rt/R The ratio of the thermistor resistance at any temperature Curve Dev. Applies to thermistors that are point matched 25 divided by its resistance at 25C. For example, if you select a at 25C. The Curve Dev. (%) must be added to the thermistor 500 at 25C thermistor in Material, you can calculate its tolerance at 25C to calculate the total tolerance or maximum nominal resistance at 100C to be 500 x .09376 = 46.88. deviation at any temperature. Curve Dev. accounts for the curve variance that occurs within any given batch or lot of Negative temperature coefficient of resistance expressed in thermistors. For example, if you specify a Material device %/C. This is the percentage change in thermistor resistance for with a + 5% tolerance at 25C, it will have a total tolerance at 80C a 1C change in its body temperature. is particularly useful in of (+ 5%) +(2.3%)= 7.3%. calculating the required resistance tolerance necessary to guar- antee sensor accuracy. For example, a Material thermistor has an of -3.80%/C at 50C. If you require a sensor that is accurate to within + 2.0C at 50C, the thermistor must have a resistance tolerance of (+ 2.0C) x (3.80%/C)= + 5.6%. 57 Temperature Sensor Products 1028 Graphite Road, St. Marys, PA 15857 8-7-13 precisionsensors.meas-spec.com Ph: 814.834.1541 Fax: 814.834.1556 www.meas-spec.com NTC Thermistors