Datasheet NTCLE100E3 (Vishay) - 4
| Fabricante | Vishay |
| Descripción | NTC Thermistors, Radial Leaded, Standard Precision |
| Páginas / Página | 17 / 4 — NTCLE100E3. T VALUE AND TOLERANCE. DETERMINATION OF THE RESISTANCE /. … |
| Formato / tamaño de archivo | PDF / 226 Kb |
| Idioma del documento | Inglés |
NTCLE100E3. T VALUE AND TOLERANCE. DETERMINATION OF THE RESISTANCE /. TEMPERATURE DEVIATION FROM NOMINAL. VALUE
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Versión de texto del documento
NTCLE100E3
www.vishay.com Vishay BCcomponents
R T VALUE AND TOLERANCE DETERMINATION OF THE RESISTANCE /
These thermistors have a narrow tolerance on the B-value,
TEMPERATURE DEVIATION FROM NOMINAL
the result of which provides a very small tolerance on the
VALUE
nominal resistance value over a wide temperature range. For The total resistance deviation is obtained by combining this reason the usual graphs of R = f(T) are replaced by the “R25-tolerance” and the “resistance deviation due to Resistance Values at Intermediate Temperatures Tables, B-tolerance”. together with a formula to calculate the characteristics with a high precision. When: X = R25-tolerance
FORMULAE TO DETERMINE NOMINAL
Y = resistance deviation due to B-tolerance
RESISTANCE VALUES
Z = complete resistance deviation, X Y The resistance values at intermediate temperatures, or the then: Z = 1 + ----- x 1 + ----- – 1 x 100 or % Z ≈ X + Y 100 100 operating temperature values, can be calculated using the When: following interpolation laws (extended “Steinhart and Hart”): TCR = temperature coefficient 2 3 (A + B ⁄ T + C ⁄ T + D ⁄ T ) ΔT = temperature deviation, R(T) = Rref x e then: Δ Z T = ------ R 2 R 3 R -1 TCR T + B ln ----- + C ln ----- + D ln ----- The temperature tolerances are plotted in the graphs on the (R) = A 1 1 R 1 R 1 R ref ref ref previous page. where:
Example:
at 0 °C, assume X = 5 %, Y = 0.92 % and A, B, C, D, A TCR = 5.09 %/K (see table ), then: 1, B1, C1 and D1 are constant values depending on the material concerned; see table below. 5 0.92 Z = 1 + ----- x 1 + ------ - 1 x 100 % R 100 100 ref. is the resistance value at a reference temperature (in this event 25 °C, Rref. = R25). = {1.05 x 1.0092 - 1} x 100 % = 5.966 % T is the temperature in K. T (°C) = T (K) - 273.15 Δ Z 5.966 T = ------ = ------- ≈ 1.17 °C Formulae numbered and are interchangeable with an error TCR 5.09 of max. 0.005 °C in the range 25 °C to 125 °C and max. A NTC with a R25-value of 10 kΩ has a value of 32.55 kΩ 0.015 °C in the range -40 °C to +25 °C. between -1.17 °C and +1.17 °C.
PARAMETER FOR DETERMINING NOMINAL RESISTANCE VALUES B TOL. B B C D B C D NUMBER 25/85 NAME A A 1 1 1 (K) (%) (K) (K2) (K3) 1 (K-1) (K-2) (K-3)
Mat O. with 1 2880 3 - 9.094 2251.74 229098 - 2.744820E+07 3.354016E-03 3.495020E-04 2.095959E-06 4.260615E-07 Bn = 2880K Mat P. with 2 2990 3 - 10.2296 2887.62 132336 - 2.502510E+07 3.354016E-03 3.415560E-04 4.955455E-06 4.364236E-07 Bn = 3990K Mat Q. with 3 3041 3 - 11.1334 3658.73 - 102895 5.166520E+05 3.354016E-03 3.349290E-04 3.683843E-06 7.050455E-07 Bn = 3041K Mat R. with 4 3136 3 - 12.4493 4702.74 - 402687 3.196830E+07 3.354016E-03 3.243880E-04 2.658012E-06 - 2.701560E-07 Bn = 3136K Mat S. with 5 3390 3 - 12.6814 4391.97 - 232807 1.509643E+07 3.354016E-03 2.993410E-04 2.135133E-06 - 5.672000E-09 Bn = 3390K 3528 (1) Mat I. with - 12.0596 3687.667 - 7617.13 - 5.914730E+06 3.354016E-03 2.909670E-04 1.632136E-06 7.192200E-08 6 0.5 Bn = 3528K 3528 (2) - 21.0704 11903.95 - 2504699 2.470338E+08 3.354016E-03 2.933908E-04 3.494314E-06 - 7.712690E-07 Mat H. with 7 3560 1.5 - 13.0723 4190.574 - 47158.4 - 1.199256E+07 3.354016E-03 2.884193E-04 4.118032E-06 1.786790E-07 Bn = 3560K Mat B. with 8 3740 2 - 13.8973 4557.725 - 98275 - 7.522357E+06 3.354016E-03 2.744032E-04 3.666944E-06 1.375492E-07 Bn = 3740K Mat A. with 9 3977 0.75 - 14.6337 4791.842 - 115334 - 3.730535E+06 3.354016E-03 2.569850E-04 2.620131E-06 6.383091E-08 Bn =3977K Mat C. with 10 4090 1.5 - 15.5322 5229.973 - 160451 - 5.414091E+06 3.354016E-03 2.519107E-04 3.510939E-06 1.105179E-07 Bn = 4090K Mat D. with 11 4190 1.5 - 16.0349 5459.339 - 191141 - 3.328322E+06 3.354016E-03 2.460382E-04 3.405377E-06 1.034240E-07 Bn = 4190K Mat E. with 12 4370 2.5 - 16.8717 5759.15 - 194267 - 6.869149E+06 3.354016E-03 2.367720E-04 3.585140E-06 1.255349E-07 Bn = 4370K Mat F. with 13 4570 1.5 - 17.6439 6022.726 - 203157 - 7.183526E+06 3.354016E-03 2.264097E-04 3.278184E-06 1.097628E-07 Bn = 4570K
Notes
(1) Temperature < 25 °C (2) Temperature ≥ 25 °C Revision: 29-Jan-2024
4
Document Number: 29049 For technical questions, contact: nlr@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
www.vishay.com Vishay BCcomponents
R T VALUE AND TOLERANCE DETERMINATION OF THE RESISTANCE /
These thermistors have a narrow tolerance on the B-value,
TEMPERATURE DEVIATION FROM NOMINAL
the result of which provides a very small tolerance on the
VALUE
nominal resistance value over a wide temperature range. For The total resistance deviation is obtained by combining this reason the usual graphs of R = f(T) are replaced by the “R25-tolerance” and the “resistance deviation due to Resistance Values at Intermediate Temperatures Tables, B-tolerance”. together with a formula to calculate the characteristics with a high precision. When: X = R25-tolerance
FORMULAE TO DETERMINE NOMINAL
Y = resistance deviation due to B-tolerance
RESISTANCE VALUES
Z = complete resistance deviation, X Y The resistance values at intermediate temperatures, or the then: Z = 1 + ----- x 1 + ----- – 1 x 100 or % Z ≈ X + Y 100 100 operating temperature values, can be calculated using the When: following interpolation laws (extended “Steinhart and Hart”): TCR = temperature coefficient 2 3 (A + B ⁄ T + C ⁄ T + D ⁄ T ) ΔT = temperature deviation, R(T) = Rref x e then: Δ Z T = ------ R 2 R 3 R -1 TCR T + B ln ----- + C ln ----- + D ln ----- The temperature tolerances are plotted in the graphs on the (R) = A 1 1 R 1 R 1 R ref ref ref previous page. where:
Example:
at 0 °C, assume X = 5 %, Y = 0.92 % and A, B, C, D, A TCR = 5.09 %/K (see table ), then: 1, B1, C1 and D1 are constant values depending on the material concerned; see table below. 5 0.92 Z = 1 + ----- x 1 + ------ - 1 x 100 % R 100 100 ref. is the resistance value at a reference temperature (in this event 25 °C, Rref. = R25). = {1.05 x 1.0092 - 1} x 100 % = 5.966 % T is the temperature in K. T (°C) = T (K) - 273.15 Δ Z 5.966 T = ------ = ------- ≈ 1.17 °C Formulae numbered and are interchangeable with an error TCR 5.09 of max. 0.005 °C in the range 25 °C to 125 °C and max. A NTC with a R25-value of 10 kΩ has a value of 32.55 kΩ 0.015 °C in the range -40 °C to +25 °C. between -1.17 °C and +1.17 °C.
PARAMETER FOR DETERMINING NOMINAL RESISTANCE VALUES B TOL. B B C D B C D NUMBER 25/85 NAME A A 1 1 1 (K) (%) (K) (K2) (K3) 1 (K-1) (K-2) (K-3)
Mat O. with 1 2880 3 - 9.094 2251.74 229098 - 2.744820E+07 3.354016E-03 3.495020E-04 2.095959E-06 4.260615E-07 Bn = 2880K Mat P. with 2 2990 3 - 10.2296 2887.62 132336 - 2.502510E+07 3.354016E-03 3.415560E-04 4.955455E-06 4.364236E-07 Bn = 3990K Mat Q. with 3 3041 3 - 11.1334 3658.73 - 102895 5.166520E+05 3.354016E-03 3.349290E-04 3.683843E-06 7.050455E-07 Bn = 3041K Mat R. with 4 3136 3 - 12.4493 4702.74 - 402687 3.196830E+07 3.354016E-03 3.243880E-04 2.658012E-06 - 2.701560E-07 Bn = 3136K Mat S. with 5 3390 3 - 12.6814 4391.97 - 232807 1.509643E+07 3.354016E-03 2.993410E-04 2.135133E-06 - 5.672000E-09 Bn = 3390K 3528 (1) Mat I. with - 12.0596 3687.667 - 7617.13 - 5.914730E+06 3.354016E-03 2.909670E-04 1.632136E-06 7.192200E-08 6 0.5 Bn = 3528K 3528 (2) - 21.0704 11903.95 - 2504699 2.470338E+08 3.354016E-03 2.933908E-04 3.494314E-06 - 7.712690E-07 Mat H. with 7 3560 1.5 - 13.0723 4190.574 - 47158.4 - 1.199256E+07 3.354016E-03 2.884193E-04 4.118032E-06 1.786790E-07 Bn = 3560K Mat B. with 8 3740 2 - 13.8973 4557.725 - 98275 - 7.522357E+06 3.354016E-03 2.744032E-04 3.666944E-06 1.375492E-07 Bn = 3740K Mat A. with 9 3977 0.75 - 14.6337 4791.842 - 115334 - 3.730535E+06 3.354016E-03 2.569850E-04 2.620131E-06 6.383091E-08 Bn =3977K Mat C. with 10 4090 1.5 - 15.5322 5229.973 - 160451 - 5.414091E+06 3.354016E-03 2.519107E-04 3.510939E-06 1.105179E-07 Bn = 4090K Mat D. with 11 4190 1.5 - 16.0349 5459.339 - 191141 - 3.328322E+06 3.354016E-03 2.460382E-04 3.405377E-06 1.034240E-07 Bn = 4190K Mat E. with 12 4370 2.5 - 16.8717 5759.15 - 194267 - 6.869149E+06 3.354016E-03 2.367720E-04 3.585140E-06 1.255349E-07 Bn = 4370K Mat F. with 13 4570 1.5 - 17.6439 6022.726 - 203157 - 7.183526E+06 3.354016E-03 2.264097E-04 3.278184E-06 1.097628E-07 Bn = 4570K
Notes
(1) Temperature < 25 °C (2) Temperature ≥ 25 °C Revision: 29-Jan-2024
4
Document Number: 29049 For technical questions, contact: nlr@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