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04M2001KF Datasheet(PDF) 4 Page - Vishay Siliconix |
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04M2001KF Datasheet(HTML) 4 Page - Vishay Siliconix |
4 / 5 page T, M, C www.vishay.com Vishay Dale Revision: 24-Sep-15 4 Document Number: 33003 For technical questions, contact: thermistor1@vishay.com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 POINT MATCH TOLERANCE The standard leaded thermistors are calibrated and tested at 25 °C to a tolerance of ± 5 % or ± 10 %; however, tighter tolerance, point matched thermistors are readily available as are special point match temperatures to fit your application. Since these thermistors have only one controlled point of reference (the point match temperature), the resistance at other temperatures is given by the specific curve resistance vs. temperature ratio. POINT MATCH TOLERANCES VS. TEMPERATURE Fig. 1 Point match resistance tolerances at temperatures other than 25 ºC are not the same as at the calibration temperature. This difference is presented in figure 2. The tolerance at any given temperature is the point match tolerance plus a manufacturing tolerance depending on the specific curve. DESIGN-IN SUPPORT A spreadsheet is available for the Vishay thermistor part numbers that gives you the resistance vs temperature data, the temperature coefficients and accuracy levels at any given temperature range and step. The Steinhart & Hart formula and coefficients A, B, and C are shown as well. This data can be obtained by visiting the Vishay NTC curve computation page at: www.vishay.com/thermistors/curve-computation-list/ or send your part number with required temperature range and step to thermistor1@vishay.com. 25 °C NOMINAL R vs. T MAX. R vs. T MIN. R vs. T PIVOT POINT (CALIBRATION TEMPERATURE) TEMPERATURE |
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