Data Sheet

ManualsBrandsTDK ManualsNTC ThermistorsTDK B57045K102K NTC thermistor K 45 1 Ω 1 pc(s)

147 05/02

Standardized R/T Characteristics

1 Introduction

1.1 Resistance value

The R/T characteristics tabulated in the following have been standardized for the resistance value

at 25

°C. The actual resistance values of a particular NTC thermistor are obtained by multiplying the

ratio R

(tabulated value) by the resistance value at 25 °C (specified in the data sheets).

Resistance values at intermediate temperatures within the range of the subsequent temperature in-

terval can be calculated by means of the temperature coefficient

α.

α is inserted in the following equation:

Resistance value at temperature T

Resistance value at the beginning of the relevant temperature interval

Temperature in °C at the beginning of the relevant temperature interval

T Temperature of interest in

°C (T

< T < T

x+1

)

Temperature coefficient at temperature T

Example:

Given: Curve 1006

= 4,7 kΩ

= 4,4

Unknown: Resistance at 7

°C (R

)

a) Calculation of the resistance value at the beginning of the relevant temperature interval

=5°C):

b) Substituting this value into equation (2) yields:

---------

⋅=

(1)

exp

100

----------

273,15+()

T 273,15+

----------------------------

273,15+

-------------------------------

–

èø

æö

⋅⋅⋅=

(2)

2,2739 4,7 kΩ⋅ 10,6873 kΩ== =

exp

100

----------

5 273,15+

()

7 273,15+

----------------------------

5 273,15+

----------------------------

–

èø

æö

⋅⋅⋅=

10,6873 kΩ exp

4,4

100

----------

278,15

280,15

------------------

278,15

------------------

–

èø

æö

⋅⋅⋅

10,6873 kΩ exp 0,08737–[]⋅ 10,6873 0,9163⋅==

9,7932 kΩ=

Standardized R/T characteristics

Summary of content (33 pages)

PAGE 1
Standardized R/T Characteristics Standardized R/T characteristics 1 Introduction 1.1 Resistance value The R/T characteristics tabulated in the following have been standardized for the resistance value at 25 °C. The actual resistance values of a particular NTC thermistor are obtained by multiplying the ratio R T /R25 (tabulated value) by the resistance value at 25 °C (specified in the data sheets).
PAGE 2
Standardized R/T Characteristics 1.2 Resistance tolerance The tolerance range of resistance can be calculated proceeding from the rated temperature and the corresponding rated resistance tolerance (see also “General Technical Information”, page 19).
PAGE 3
Standardized R/T Characteristics c) Calculation of resistance tolerance by means of equation (3): ∆ R 35 1 1 æ ö --------------- = 5 + 1,5 ⋅ 3930 ⋅ è ------------------------------------ – ---------------------------------------ø ( 35 + 273,15 ) ( 100 + 273,15 ) R 35 1 1 = 5 + 5895 ⋅ ------------------ – ----------------308,15 373,15 % % = ( 5 + 5895 ⋅ 0,00056529 ) % = 5,0 % + 3,3 % = 8,3 % If the R/T characteristics are computer-stored, the resistance tolerances for all temperatures can be easily dete
PAGE 4
Standardized R/T Characteristics 2 Tabulated R/T characteristics Number 1006 1008 1009 1010 T (°C) B 25/100 = 3560 K B25/100 = 3930 K B25/100 = 3530 K B25/100 = 3550 K R T/R25 α (%/K) R T/R25 α (%/K) R T/R25 α (%/K) R T/R 25 α (%/K) – 55,0 – 50,0 – 45,0 – 40,0 48,503 36,524 27,639 21,021 5,8 5,7 5,6 5,5 53,104 39,318 29,325 22,030 6,1 6,0 5,8 5,7 85,423 60,781 43,650 31,629 7,0 6,8 6,6 6,4 52,826 38,643 28,574 21,346 6,4 6,1 5,9 5,7 – 35,0 – 30,0 – 25,0 – 20,0 – 15,0 16,069 12,348
PAGE 5
Standardized R/T Characteristics Number 1006 1008 1009 1010 T (°C) B25/100 = 3550 K B 25/100 = 3560 K B25/100 = 3930 K B25/100 = 3530 K R T/R25 α (%/K) R T/R25 α (%/K) R T/R25 α (%/K) R T/R 25 α (%/K) 140,0 145,0 150,0 155,0 160,0 0,035209 0,031581 0,028389 0,025614 – 2,2 2,2 2,1 2,0 – 0,034615 0,031048 0,027910 0,025193 0,022790 2,2 2,1 2,1 2,0 2,0 0,024935 0,022176 0,019772 0,017683 – 2,4 2,3 2,3 2,2 – – – – – – – – – – – 165,0 170,0 175,0 180,0 185,0 – – – – – – – – – – 0,02066
PAGE 6
Standardized R/T Characteristics Number 1011 1012 1013 1014 T (°C) B 25/100 = 4300 K B25/100 = 3900 K B25/100 = 4250 K B25/100 = 3730 K R T/R25 α (%/K) R T/R25 α (%/K) R T/R25 α (%/K) R T/R 25 α (%/K) – 55,0 – 50,0 – 45,0 – 40,0 70,014 49,906 36,015 26,296 6,9 6,7 6,4 6,2 87,237 62,264 44,854 32,599 6,8 6,7 6,5 6,3 77,285 54,938 39,507 28,722 7,0 6,7 6,5 6,3 83,935 60,228 43,593 31,815 6,8 6,6 6,4 6,3 – 35,0 – 30,0 – 25,0 – 20,0 – 15,0 19,411 14,479 10,903 8,2923 6,3591 6,0 5,8 5,6
PAGE 7
PAGE 8
Standardized R/T Characteristics Number 1201 1202 1203 1207 T (°C) B 25/100 = 2800 K B25/100 = 2900 K B25/100 = 2965 K – 55,0 – 50,0 – 45,0 – 40,0 B25/100 = 2700 K R T/R25 α (%/K) R T/R25 α (%/K) R T/R25 α (%/K) R T/R 25 α (%/K) 22,708 17,667 13,875 10,995 5,1 4,9 4,7 4,6 5,5 5,3 5,1 4,9 30,252 22,966 17,612 13,650 5,6 5,4 5,2 5,0 31,68 24,01 18,37 14,19 5,7 5,5 5,3 5,1 27,119 20,748 16,035 12,521 – 35,0 – 30,0 – 25,0 – 20,0 – 15,0 8,7862 7,0771 5,7435 4,6945 3,8631 4,4 4,3 4,1 4,0
PAGE 9
Standardized R/T Characteristics Number 1201 1202 1203 T (°C) B 25/100 = 2800 K B25/100 = 2900 K B25/100 = 2700 K 1207 B25/100 = 2965 K R T/R25 α (%/K) R T/R25 α (%/K) R T/R25 α (%/K) R T/R 25 α (%/K) 140,0 145,0 150,0 155,0 160,0 0,078912 0,072798 0,067281 0,062291 0,057770 1,6 1,6 1,6 1,5 1,5 0,072516 0,066766 0,061586 0,056912 0,052685 1,7 1,6 1,6 1,6 1,5 0,066032 0,060629 0,055776 0,051415 0,047481 1,7 1,7 1,6 1,6 1,6 0,06119 0,05594 0,05124 0,04702 0,04322 1,8 1,8 1,7 1,7 1,7 165
PAGE 10
Standardized R/T Characteristics Number 1208 1209 1210 1302 T (°C) B 25/100 = 3165 K B25/100 = 3265 K B25/100 = 3000 K B25/100 = 3065 K R T/R25 α (%/K) R T/R25 α (%/K) R T/R25 α (%/K) R T/R 25 α (%/K) – 55,0 – 50,0 – 45,0 – 40,0 34,65 26,10 19,85 15,24 5,8 5,6 5,4 5,2 37,65 28,21 21,34 16,30 5,9 5,7 5,5 5,3 41,62 30,98 23,28 17,66 6,0 5,8 5,6 5,4 33,701 25,252 19,149 14,684 5,9 5,7 5,4 5,2 – 35,0 – 30,0 – 25,0 – 20,0 – 15,0 11,81 9,237 7,283 5,789 4,637 5,0 4,8 4,7 4,5 4,4 12,56 9,
PAGE 11
Standardized R/T Characteristics Number 1208 1209 1210 T (°C) B 25/100 = 3165 K B25/100 = 3265 K B25/100 = 3065 K 1302 B25/100 = 3000 K R T/R25 α (%/K) R T/R25 α (%/K) R T/R25 α (%/K) R T/R 25 α (%/K) 140,0 145,0 150,0 155,0 160,0 0,05557 0,05063 0,04621 0,04226 0,03871 1,9 1,8 1,8 1,8 1,7 0,05038 0,04573 0,04159 0,03790 0,03460 2,0 1,9 1,9 1,8 1,8 0,04560 0,04124 0,03737 0,03393 0,03087 2,0 2,0 2,0 1,9 1,9 0,058733 0,053561 0,048933 0,044793 0,041077 1,9 1,8 1,8 1,8 1,7 165,0 170,0
PAGE 12
Standardized R/T Characteristics Number 1303 1304 1305 1306 T (°C) B 25/100 = 3300 K B25/100 = 3200 K B25/100 = 3450 K B25/100 = 3050 K R T/R25 α (%/K) R T/R25 α (%/K) R T/R25 α (%/K) R T/R 25 α (%/K) – 55,0 – 50,0 – 45,0 – 40,0 34,363 25,827 19,635 15,089 5,8 5,6 5,4 5,2 39,326 30,121 23,164 17,888 5,5 5,4 5,3 5,2 42,131 31,129 23,273 17,592 6,2 5,9 5,7 5,5 49,935 36,640 27,180 20,370 6,3 6,1 5,9 5,7 – 35,0 – 30,0 – 25,0 – 20,0 – 15,0 11,712 9,1774 7,2552 5,7835 4,6467 5,0 4,8 4,6
PAGE 13
Standardized R/T Characteristics Number 1303 1304 1305 1306 T (°C) B25/100 = 3050 K B 25/100 = 3300 K B25/100 = 3200 K B25/100 = 3450 K R T/R25 α (%/K) R T/R25 α (%/K) R T/R25 α (%/K) R T/R 25 α (%/K) 140,0 145,0 150,0 155,0 160,0 – – – – – – – – – – 0,045227 0,041008 0,037262 0,033961 0,031019 2,0 1,9 1,9 1,8 1,8 – – – – – – – – – – – – – – – – – – – – 165,0 170,0 – – – – 0,028389 0,026034 1,8 1,7 – – – – – – – – 159 05/02
PAGE 14
Standardized R/T Characteristics Number 1308 1309 2001 2003 T (°C) B 25/100 = 3520 K B25/100 = 3920 K B25/100 = 3980 K B25/100 = 3060 K R T/R25 α (%/K) R T/R25 α (%/K) R T/R25 α (%/K) R T/R 25 α (%/K) – 55,0 – 50,0 – 45,0 – 40,0 32,33 24,58 18,85 14,58 5,6 5,4 5,2 5,0 48,460 35,800 26,694 20,085 6,1 6,0 5,8 5,6 87,762 61,922 44,168 31,833 7,1 6,9 6,7 6,5 97,578 67,650 47,538 33,831 7,5 7,2 7,0 6,7 – 35,0 – 30,0 – 25,0 – 20,0 – 15,0 11,38 8,947 7,091 5,663 4,555 4,9 4,7 4,6 4,4 4,3
PAGE 15
Standardized R/T Characteristics Number 1308 1309 2001 2003 T (°C) B25/100 = 3060 K B 25/100 = 3520 K B25/100 = 3920 K B25/100 = 3980 K R T/R25 α (%/K) R T/R25 α (%/K) R T/R25 α (%/K) R T/R 25 α (%/K) 140,0 145,0 150,0 155,0 160,0 0,05559 0,05063 0,04620 0,04224 0,03869 1,9 1,9 1,8 1,8 1,7 – – – – – – – – – – – – – – – – – – – – 0,023594 0,020931 0,018616 0,016612 – 2,4 2,4 2,3 2,3 – 165,0 170,0 0,03550 0,03263 1,7 1,7 – – – – – – – – – – – – 161 05/02
PAGE 16
Standardized R/T Characteristics Number 2004 2005 2006 2007 T (°C) B 25/100 = 4600 K B25/100 = 5000 K B25/100 = 4830 K B25/100 = 4100 K R T/R25 α (%/K) R T/R25 α (%/K) R T/R25 α (%/K) R T/R 25 α (%/K) – 55,0 – 50,0 – 45,0 – 40,0 99,552 68,582 47,963 34,019 7,6 7,3 7,0 6,7 7,0 6,9 6,8 6,7 200,55 131,02 87,171 58,988 8,7 8,3 8,0 7,7 185,87 123,23 82,888 56,544 8,4 8,1 7,8 7,6 – 35,0 – 30,0 – 25,0 – 20,0 – 15,0 24,448 17,787 13,083 9,7251 7,3160 6,5 6,3 6,1 5,8 5,6 31,459 22,746 16,490
PAGE 17
PAGE 18
Standardized R/T Characteristics Number 2014 2101 2901 2903 T (°C) B25/100 = 4540 K B 25/100 = 4100 K B25/100 = 3760 K B25/100 = 4200 K R T/R25 α (%/K) R T/R25 α (%/K) R T/R25 α (%/K) R T/R 25 α (%/K) – 55,0 – 50,0 – 45,0 – 40,0 142,00 96,615 66,562 46,400 7,8 7,6 7,3 7,1 7,5 7,2 7,0 6,7 63,969 46,179 33,738 24,927 6,7 6,4 6,2 6,0 7,7 7,4 7,2 7,0 104,09 72,101 50,572 35,898 120,03 82,380 57,248 40,255 – 35,0 – 30,0 – 25,0 – 20,0 – 15,0 32,708 23,302 16,770 12,186 8,9370 6,9 6,7 6,5
PAGE 19
Standardized R/T Characteristics Number 2014 2101 2901 2903 T (°C) B25/100 = 4540 K B 25/100 = 4100 K B25/100 = 3760 K B25/100 = 4200 K R T/R25 α (%/K) R T/R25 α (%/K) R T/R25 α (%/K) R T/R 25 α (%/K) 140,0 145,0 150,0 155,0 0,013544 0,011769 0,010258 0,0089659 2,8 2,8 2,7 2,7 – – – – 2,4 2,3 2,3 2,3 – – – – – – – – 0,028510 0,025373 0,022633 0,020231 165 05/02 – – – –
PAGE 20
Standardized R/T Characteristics Number 2904 2908 2911 3204 T (°C) B25/100 = 4300 K B 25/100 = 3460 K B25/100 = 4170 K B25/100 = 3250 K R T/R25 α (%/K) R T/R25 α (%/K) R T/R25 α (%/K) R T/R 25 α (%/K) – 55,0 – 50,0 – 45,0 – 40,0 121,46 84,439 59,243 41,938 7,4 7,2 7,1 6,9 45,313 33,729 25,333 19,191 6,0 5,8 5,6 5,5 7,8 7,5 7,2 7,0 42,253 31,775 23,937 18,124 5,7 5,7 5,6 5,5 120,70 82,419 57,035 39,975 – 35,0 – 30,0 – 25,0 – 20,0 – 15,0 29,947 21,567 15,641 11,466 8,4510 6,7 6,6 6,3
PAGE 21
Standardized R/T Characteristics Number 2904 2908 2911 3204 T (°C) B25/100 = 4300 K B 25/100 = 3460 K B25/100 = 4170 K B25/100 = 3250 K R T/R25 α (%/K) R T/R25 α (%/K) R T/R25 α (%/K) R T/R 25 α (%/K) 140,0 145,0 150,0 155,0 160,0 0,017251 0,015139 0,013321 0,011754 – 2,6 2,6 2,5 2,5 – 0,038003 0,034189 0,030828 0,027859 0,025230 2,1 2,1 2,0 2,0 2,0 0,019820 0,017496 0,015488 0,013747 0,012234 2,5 2,5 2,4 2,4 2,3 – – – – – – – – – – 165,0 170,0 175,0 180,0 – – – – – – – – 0,022896
PAGE 22
Standardized R/T Characteristics Number 3205 3206 3207 4001 T (°C) B 25/100 = 3450 K B25/100 = 3100 K B25/100 = 3950 K B25/100 = 3300 K R T/R25 α (%/K) R T/R25 α (%/K) R T/R25 α (%/K) R T/R 25 α (%/K) – 55,0 – 50,0 – 45,0 – 40,0 48,569 35,504 26,252 19,625 6,4 6,2 5,9 5,7 59,147 42,651 31,088 22,903 6,7 6,4 6,2 6,0 36,781 27,559 20,858 15,942 5,9 5,7 5,5 5,3 88,052 61,650 43,727 31,395 7,3 7,0 6,8 6,5 – 35,0 – 30,0 – 25,0 – 20,0 – 15,0 14,827 11,315 8,7191 6,7805 5,3194 5,5 5,3 5,1
PAGE 23
PAGE 24
Standardized R/T Characteristics Number 4003 4012 4901 8016 T (°C) B25/100 = 4450 K B 25/100 = 4355 K B25/100 = 3950 K B25/100 = 3988 K R T/R25 α (%/K) R T/R25 α (%/K) R T/R25 α (%/K) R T/R 25 α (%/K) – 55,0 – 50,0 – 45,0 – 40,0 103,81 73,707 52,723 37,988 6,8 6,7 6,6 6,5 7,5 7,2 7,0 6,8 87,890 61,759 43,934 31,618 7,1 6,9 6,7 6,5 96,30 67,01 47,17 33,65 7,4 7,2 6,9 6,7 115,76 80,102 56,067 39,677 – 35,0 – 30,0 – 25,0 – 20,0 – 15,0 27,565 20,142 14,801 10,976 8,1744 6,4 6,2 6,1 5,9
PAGE 25
Standardized R/T Characteristics Number 4003 4012 4901 8016 T (°C) B25/100 = 4450 K B 25/100 = 4355 K B25/100 = 3950 K B25/100 = 3988 K R T/R25 α (%/K) R T/R25 α (%/K) R T/R25 α (%/K) R T/R 25 α (%/K) 140,0 145,0 150,0 155,0 160,0 0,014253 0,012367 0,010758 0,0093933 – 2,9 2,8 2,8 2,7 – 0,016081 0,014045 0,012301 0,010803 0,0095122 2,7 2,7 2,6 2,6 2,5 0,024034 0,021285 0,018895 0,016813 – 2,4 2,4 2,4 2,3 – 0,02348 0,02083 0,01853 0,01653 – 2,4 2,4 2,3 2,3 – 165,0 170,0 175,0 180,0 –
PAGE 26
Standardized R/T Characteristics Number 8018 8401 8402 8403 T (°C) B25/100 = 3964 K B 0/100 = 3390 K B0/100 = 3450 K B0/100 = 3970 K R T/R25 α (%/K) R T/R25 α (%/K) R T/R25 α (%/K) R T/R 25 α (%/K) – 55,0 – 50,0 – 45,0 – 40,0 – – – 30,24 – – – 6,3 48,237 35,488 26,390 19,825 6,2 6,0 5,8 5,6 51,991 37,989 28,070 20,960 6,4 6,2 5,9 5,7 7,6 7,3 7,1 6,8 – 35,0 – 30,0 – 25,0 – 20,0 – 15,0 22,10 16,32 12,17 9,153 6,945 6,1 5,9 5,8 5,6 5,4 15,037 11,511 8,8893 6,9218 5,4326 5,4 5,3 5,1 4
PAGE 27
Standardized R/T Characteristics Number 8018 8401 8402 T (°C) B 0/100 = 3390 K B0/100 = 3450 K B25/100 = 3964 K 8403 B0/100 = 3970 K R T/R25 α (%/K) R T/R25 α (%/K) R T/R25 α (%/K) R T/R 25 α (%/K) 140,0 145,0 150,0 155,0 160,0 0,02361 0,02091 0,01857 0,016537 – 2,5 2,4 2,4 2,3 – 0,039159 0,035294 0,031885 0,028870 0,026197 2,1 2,1 2,0 2,0 1,9 0,036875 0,033159 0,029886 0,026998 0,024442 2,1 2,1 2,1 2,0 2,0 0,023060 0,020446 0,018176 0,016199 0,014473 2,4 2,4 2,3 2,3 2,2 165,0 170,0 1
PAGE 28
Standardized R/T Characteristics Numb.
PAGE 29
Standardized R/T Characteristics Numb.
PAGE 30
Standardized R/T Characteristics Number 8413 T (°C) – 55,0 – 50,0 – 45,0 – 40,0 – 35,0 B 150/250 = 5300 K R T/R25 α (%/K) 176,81 118,19 80,046 54,886 38,080 8,2 7,9 7,7 7,4 7,2 T (°C) B 150/250 = 5300 K T (°C) B 150/250 = 5300 K R T/R25 α (%/K) R T/R25 α (%/K) 140,0 145,0 150,0 155,0 160,0 0,010928 0,0094161 0,0081380 0,0070541 0,0061320 3,0 2,9 2,9 2,8 2,8 335,0 340,0 345,0 350,0 355,0 0,00017444 0,00016218 0,00015093 0,00014060 0,00013110 1,5 1,4 1,4 1,4 1,4 – 30,0 – 25,0 – 20,0 – 15,0 –
PAGE 31
Standardized R/T Characteristics Number 8415 T (°C) – 55,0 – 50,0 – 45,0 – 40,0 – 35,0 B 0/100 = 3970 K R T/R25 α (%/K) 103,29 71,079 49,619 35,108 25,158 7,6 7,3 7,1 6,8 6,5 T (°C) B 0/100 = 3970 K T (°C) B 0/100 = 3970 K R T/R25 α (%/K) R T/R25 α (%/K) 140,0 145,0 150,0 155,0 160,0 0,023060 0,020446 0,018176 0,016199 0,014473 2,4 2,4 2,3 2,3 2,2 335,0 340,0 345,0 350,0 355,0 – – – – – – – – – – – 30,0 – 25,0 – 20,0 – 15,0 – 10,0 18,245 13,383 9,9221 7,4316 5,6202 6,3 6,1 5,9 5,7 5,5 1
PAGE 32
Standardized R/T Characteristics Number 8501 8502 8503 T (°C) B25/100 = 3550 K B 25/100 = 4000 K B25/100 = 4500 K R T/R25 α (%/K) R T/R25 α (%/K) R T/R25 α (%/K) – 55,0 – 50,0 – 45,0 – 40,0 56,633 41,134 30,209 22,420 6,5 6,3 6,1 5,9 96,158 66,892 47,127 33,606 7,4 7,1 6,9 6,6 7,8 7,5 7,2 7,0 – 35,0 – 30,0 – 25,0 – 20,0 – 15,0 16,807 12,721 9,7156 7,4854 5,8152 5,7 5,5 5,3 5,1 5,0 24,243 17,681 13,032 9,7020 7,2923 6,4 6,2 6,0 5,8 5,6 31,071 22,244 16,087 11,746 8,6553 6,8 6,6 6,4 6,
PAGE 33
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