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541-1075 데이터시트(PDF) 3 Page - Vishay Siliconix |
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541-1075 데이터시트(HTML) 3 Page - Vishay Siliconix |
3 / 4 page Document Number: 33003 Revision 22-Sep-04 www.vishay.com 20 M, C, T Vishay Dale For technical questions, contact thermistor1@vishay.com Description of Thermistor Tolerances The many applications of thermistors have mandated the need for two basic tolerance schemes for these products - Curve Tracking and Point Match Thermistors. An example of the resistance tolerance at various temperatures for the two different tolerancing methods is described in the following graph: Curve Tracking Tolerance: Thermistors are calibrated at the high temperature of the curve track range and then final tested at the low temperature of the curve track range. This ensures that the thermistor will meet the specified temperature accuracy at every temperature within the desired temperature range. Several temperature ranges are available and the accuracy of the thermistor may be ± 0.2°C, ± 0.5°C, and ± 1.0°C. The Curve Tracking temperature ranges and their code designators are shown in Figure 1 and Table 1. To specify, add the appropriate suffix from the following table to the part number. Example: 1M1002-B3 = Curve 1, 10 kilohms at + 25°C, curve tracking to ± 0.5°C from 0°C to + 70°C TOLERANCES AVAILABLE FOR TYPE M, C AND T THERMISTORS TEMPERATURE ( °C) ± 5% POINT MATCH CURVE ± 1°C CURVE TRACK CURVE 25 °C 10 9 8 7 6 5 4 3 2 1 0 A2 A8 A3 A5 A4 STANDARD ELECTRICAL SPECIFICATIONS FOR CURVE TRACKING THERMISTORS TEMP. RANGE 0 °C to + 70°C- 20°C to + 50°C0°C to + 100°C25°C to + 90°C0°C to + 50°C TOLERANCE ± 1°C ± 0.5°C ± 0.2°C ± 1°C ± 0.5°C ± 0.2°C ± 1°C ± 0.5°C ± 0.2°C ± 1°C ± 0.5°C ± 0.2°C ± 1°C ± 0.5°C ± 0.2°C PART NO. SUFFIX - A3 - B3 - C3 - A2 - B2 - C2 - A4 - B4 - C4 - A5 - B5 - C5 - A8 - B8 - C8 C1 X X X X X X X X N/A X X X X X X U2 X X X X X X X X N/A X X X X X X R4 X X X X X X X X N/A X X X X X X V8 X X X X X X X X N/A X X X X X X E9 X X X X X X X X N/A X X X X X X NTC Thermistors, Coated |
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