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B57891-M682-J [EPCOS]

RESISTOR, TEMPERATURE DEPENDENT, NTC, 6800ohm, THROUGH HOLE MOUNT, RADIAL LEADED;
B57891-M682-J
型号： B57891-M682-J
厂家： EPCOS    EPCOS
描述：

RESISTOR, TEMPERATURE DEPENDENT, NTC, 6800ohm, THROUGH HOLE MOUNT, RADIAL LEADED
文件： 总23页 (文件大小：347K)
中文：  中文翻译
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NTC thermistors for  
temperature measurement  
Leaded NTC thermistors,  
lead spacing 2.5 mm  
Series/Type:  
B57891M  
Date:  
February 2009  
© EPCOS AG 2009. Reproduction, publication and dissemination of this publication, enclosures hereto and the  
information contained therein without EPCOS' prior express consent is prohibited.  
Temperature measurement and compensation  
Leaded NTC thermistors, lead spacing 2.5 mm  
B57891M  
M891  
Applications  
Dimensional drawing  
Temperature measurement and  
compensation  
Features  
Wide resistance range  
Cost-effective  
Lacquer-coated thermistor disk  
Leads: copper-clad Fe wire, tinned  
Marked with resistance and tolerance  
Options  
Lead spacing 5 mm available on request  
Delivery mode  
Bulk (standard), cardboard tape, reeled or in  
Ammo pack on request  
Dimensions in mm  
Approx. weight 0.2 g  
General technical data  
Climatic category  
Max. power  
(IEC 60068-1)  
(at 25 °C)  
40/125/56  
200  
∆RR/RR ±5, ±10  
P25  
mW  
%
°C  
mW/K  
s
mJ/K  
Resistance tolerance  
Rated temperature  
Dissipation factor  
Thermal cooling time constant  
Heat capacity  
TR  
δth  
τc  
25  
(in air)  
(in air)  
approx. 3.5  
approx. 12  
approx. 40  
Cth  
Please read Cautions and warnings and  
Important notes at the end of this document.  
Page 2 of 23  
Temperature measurement and compensation  
Leaded NTC thermistors, lead spacing 2.5 mm  
B57891M  
M891  
Electrical specification and ordering codes  
R25  
Ω
No. of R/T  
characteristic  
B25/100  
K
Ordering code  
1 k  
1009  
1008  
1013  
2003  
2003  
2003  
4901  
2004  
2904  
2904  
4012  
4012  
4003  
2005  
2005  
2007  
2006  
3930 ±3%  
3560 ±3%  
3900 ±3%  
3980 ±3%  
3980 ±3%  
3980 ±3%  
3950 ±3%  
4100 ±3%  
4300 ±3%  
4300 ±3%  
4355 ±3%  
4355 ±3%  
4450 ±3%  
4600 ±3%  
4600 ±3%  
4830 ±3%  
5000 ±3%  
B57891M0102+000  
B57891M0152+000  
B57891M0222+000  
B57891M0332+000  
B57891M0472+000  
B57891M0682+000  
B57891M0103+000  
B57891M0153+000  
B57891M0223+000  
B57891M0333+000  
B57891M0473+000  
B57891M0683+000  
B57891M0104+000  
B57891M0154+000  
B57891M0224+000  
B57891M0334+000  
B57891M0474+000  
1.5 k  
2.2 k  
3.3 k  
4.7 k  
6.8 k  
10 k  
15 k  
22 k  
33 k  
47 k  
68 k  
100 k  
150 k  
220 k  
330 k  
470 k  
+ = Resistance tolerance  
J = ±5%  
K = ±10%  
Reliability data  
Test  
Standard  
Test conditions  
∆R25/R25  
Remarks  
(typical)  
< 3%  
Storage in  
dry heat  
IEC  
60068-2-2  
Storage at upper  
category temperature  
T: 125 °C  
No visible  
damage  
t: 1000 h  
Storage in damp  
heat, steady state  
IEC  
Temperature of air: 40 °C  
< 2%  
No visible  
damage  
60068-2-78 Relative humidity of air: 93%  
Duration: 56 days  
Rapid temperature IEC  
Lower test temperature: ꢀ40 °C < 2%  
No visible  
damage  
cycling  
60068-2-14 Upper test temperature: 125 °C  
Number of cycles: 100  
Endurance  
Pmax: 200 mW  
t: 1000 h  
< 3%  
< 5%  
No visible  
damage  
Long-term stability  
(empirical value)  
Temperature: 70 °C  
t: 10000 h  
No visible  
damage  
Please read Cautions and warnings and  
Important notes at the end of this document.  
Page 3 of 23  
Temperature measurement and compensation  
Leaded NTC thermistors, lead spacing 2.5 mm  
B57891M  
M891  
R/T characteristics  
1008  
1009  
1013  
R/T No.  
T (°C)  
B25/100 = 3560 K  
RT/R25  
B25/100 = 3930 K  
B25/100 = 3900 K  
α (%/K) RT/R25  
α (%/K) RT/R25  
α (%/K)  
ꢀ55.0 53.104  
ꢀ50.0 39.318  
ꢀ45.0 29.325  
ꢀ40.0 22.03  
ꢀ35.0 16.666  
6.1  
6.0  
5.8  
5.7  
5.5  
85.423  
60.781  
43.65  
31.629  
23.118  
7.0  
6.8  
6.6  
6.4  
6.2  
77.285  
54.938  
39.507  
28.722  
21.099  
7.0  
6.7  
6.5  
6.3  
6.1  
ꢀ30.0 12.696  
5.4  
5.2  
5.1  
4.9  
4.8  
17.04  
6.1  
5.9  
5.8  
5.6  
5.4  
15.652  
11.715  
8.8541  
6.7433  
5.1815  
5.9  
5.7  
5.6  
5.4  
5.2  
ꢀ25.0  
ꢀ20.0  
ꢀ15.0  
ꢀ10.0  
9.7251  
7.5171  
5.8353  
4.5686  
12.649  
9.4864  
7.1545  
5.4479  
ꢀ5.0  
0.0  
5.0  
10.0  
15.0  
3.605  
4.7  
4.5  
4.4  
4.3  
4.1  
4.1732  
3.2256  
2.5147  
1.9763  
1.5649  
5.2  
5.1  
4.9  
4.8  
4.6  
4.0099  
3.1283  
2.4569  
1.9438  
1.5475  
5.1  
4.9  
4.8  
4.6  
4.5  
2.8665  
2.2907  
1.8438  
1.492  
20.0  
25.0  
30.0  
35.0  
40.0  
1.2154  
1.0000  
0.82976  
0.68635  
0.57103  
4.0  
3.9  
3.8  
3.7  
3.6  
1.2481  
1.0000  
0.80956  
0.65726  
0.53697  
4.5  
4.3  
4.2  
4.1  
4.0  
1.2403  
1.0000  
0.81104  
0.66146  
0.54254  
4.4  
4.3  
4.1  
4.0  
3.9  
45.0  
50.0  
55.0  
60.0  
65.0  
0.48015  
0.40545  
0.3417  
0.28952  
0.24714  
3.5  
3.4  
3.3  
3.2  
3.1  
0.44169  
0.36534  
0.30327  
0.25313  
0.21271  
3.9  
3.8  
3.7  
3.5  
3.4  
0.44727  
0.37067  
0.30865  
0.25825  
0.21707  
3.8  
3.7  
3.6  
3.5  
3.4  
70.0  
75.0  
80.0  
85.0  
90.0  
0.21183  
0.18194  
0.1568  
0.13592  
0.11822  
3.1  
3.0  
2.9  
2.8  
2.8  
0.17962  
0.15219  
0.12949  
0.11067  
0.094952  
3.4  
3.3  
3.2  
3.1  
3.0  
0.18323  
0.15535  
0.13223  
0.11302  
0.096951  
3.3  
3.3  
3.2  
3.1  
3.0  
95.0  
100.0  
105.0  
110.0  
115.0  
0.1034  
2.7  
2.6  
2.6  
2.5  
2.4  
0.08178  
0.07069  
0.061383  
0.053486  
0.04673  
3.0  
2.9  
2.8  
2.7  
2.7  
0.083487  
0.072139  
0.062559  
0.054425  
0.047508  
3.0  
2.9  
2.8  
2.8  
2.7  
0.090741  
0.079642  
0.070102  
0.061889  
120.0  
125.0  
130.0  
135.0  
140.0  
0.054785  
0.048706  
0.043415  
0.038722  
0.034615  
2.4  
2.3  
2.3  
2.2  
2.2  
0.040955  
0.036006  
0.031747  
0.028097  
0.024935  
2.6  
2.5  
2.5  
2.4  
2.4  
0.041594  
0.036532  
ꢀ
ꢀ
ꢀ
2.6  
2.6  
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
145.0  
150.0  
155.0  
0.031048  
0.02791  
0.025193  
2.1  
2.1  
2.0  
0.022176  
0.019772  
0.017683  
2.3  
2.3  
2.2  
Please read Cautions and warnings and  
Important notes at the end of this document.  
Page 4 of 23  
Temperature measurement and compensation  
Leaded NTC thermistors, lead spacing 2.5 mm  
B57891M  
M891  
1008  
1009  
1013  
R/T No.  
T (°C)  
B25/100 = 3560 K  
RT/R25  
B25/100 = 3930 K  
B25/100 = 3900 K  
α (%/K) RT/R25  
α (%/K) RT/R25  
α (%/K)  
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
160.0  
165.0  
0.02279  
0.020667  
2.0  
2.0  
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
170.0  
175.0  
180.0  
185.0  
190.0  
0.01878  
0.01709  
0.015582  
0.014227  
0.013012  
1.9  
1.9  
1.8  
1.8  
1.8  
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
195.0  
200.0  
205.0  
210.0  
215.0  
0.011934  
0.010964  
0.0101  
0.0093191  
0.0085949  
1.7  
1.7  
1.7  
1.6  
1.6  
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
220.0  
225.0  
230.0  
235.0  
240.0  
0.0079384  
0.0073411  
0.006798  
0.0063087  
0.0058623  
1.6  
1.5  
1.5  
1.5  
1.5  
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
245.0  
250.0  
0.0054487  
0.0050705  
1.4  
1.4  
Please read Cautions and warnings and  
Important notes at the end of this document.  
Page 5 of 23  
Temperature measurement and compensation  
Leaded NTC thermistors, lead spacing 2.5 mm  
B57891M  
M891  
R/T characteristics  
2003  
2004  
2005  
R/T No.  
T (°C)  
B25/100 = 3980 K  
RT/R25  
B25/100 = 4100 K  
B25/100 = 4600 K  
α (%/K) RT/R25  
α (%/K) RT/R25  
α (%/K)  
ꢀ55.0 97.578  
ꢀ50.0 67.65  
ꢀ45.0 47.538  
ꢀ40.0 33.831  
ꢀ35.0 24.359  
7.5  
7.2  
7.0  
6.7  
6.5  
99.552  
68.582  
47.963  
34.019  
24.448  
7.6  
7.3  
7.0  
6.7  
6.5  
120.22  
85.48  
61.004  
43.712  
31.459  
7.0  
6.9  
6.8  
6.7  
6.6  
ꢀ30.0 17.753  
ꢀ25.0 13.067  
6.3  
6.0  
5.8  
5.6  
5.5  
17.787  
13.083  
9.7251  
7.316  
6.3  
6.1  
5.8  
5.6  
5.4  
22.746  
16.49  
12.071  
8.8455  
6.5446  
6.6  
6.4  
6.3  
6.1  
6.0  
ꢀ20.0  
ꢀ15.0  
ꢀ10.0  
9.7228  
7.3006  
5.5361  
5.5545  
ꢀ5.0  
0.0  
5.0  
10.0  
15.0  
4.2332  
3.266  
2.5392  
1.9902  
1.5709  
5.3  
5.1  
5.0  
4.8  
4.7  
4.2531  
3.2836  
2.5512  
1.9973  
1.5738  
5.3  
5.1  
5.0  
4.8  
4.7  
4.8852  
3.6781  
2.7944  
2.1391  
1.6507  
5.8  
5.6  
5.4  
5.3  
5.1  
20.0  
25.0  
30.0  
35.0  
40.0  
1.2492  
1.0000  
0.80575  
0.65326  
0.5329  
4.5  
4.4  
4.3  
4.1  
4.0  
1.2488  
1.0000  
0.8008  
0.64733  
0.52628  
4.5  
4.5  
4.3  
4.2  
4.0  
1.2823  
1.0000  
0.78393  
0.61822  
0.49053  
5.1  
5.0  
4.8  
4.7  
4.6  
45.0  
50.0  
55.0  
60.0  
65.0  
0.43715  
0.36064  
0.29908  
0.24932  
0.20886  
3.9  
3.8  
3.7  
3.6  
3.5  
0.43263  
0.35708  
0.29406  
0.24342  
0.20278  
3.9  
3.9  
3.8  
3.7  
3.6  
0.39116  
0.31371  
0.25338  
0.20565  
0.16762  
4.5  
4.3  
4.2  
4.2  
4.1  
70.0  
75.0  
80.0  
85.0  
90.0  
0.17578  
0.14863  
0.12621  
0.10763  
0.092159  
3.4  
3.3  
3.2  
3.1  
3.1  
0.16964  
0.14257  
0.12028  
0.10196  
0.086757  
3.5  
3.4  
3.4  
3.3  
3.3  
0.13726  
0.11279  
0.093053  
0.077177  
0.064263  
4.0  
3.9  
3.8  
3.7  
3.6  
95.0  
100.0  
105.0  
110.0  
115.0  
0.079225  
0.068356  
0.059247  
0.051531  
0.044921  
3.0  
2.9  
2.8  
2.8  
2.7  
0.073804  
0.062974  
0.054276  
0.046943  
0.040576  
3.2  
3.0  
2.9  
3.0  
2.9  
0.053678  
0.044996  
0.037917  
0.032063  
0.027161  
3.6  
3.5  
3.4  
3.4  
3.3  
120.0  
125.0  
130.0  
135.0  
140.0  
0.039282  
0.034387  
0.030186  
0.02665  
2.7  
2.6  
2.5  
2.5  
2.4  
0.035174  
0.030637  
ꢀ
ꢀ
ꢀ
2.8  
2.7  
ꢀ
ꢀ
ꢀ
0.023079  
0.01968  
3.2  
3.2  
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
0.023594  
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
145.0  
150.0  
155.0  
0.020931  
0.018616  
0.016612  
2.4  
2.3  
2.3  
Please read Cautions and warnings and  
Important notes at the end of this document.  
Page 6 of 23  
Temperature measurement and compensation  
Leaded NTC thermistors, lead spacing 2.5 mm  
B57891M  
M891  
Please read Cautions and warnings and  
Important notes at the end of this document.  
Page 7 of 23  
Temperature measurement and compensation  
Leaded NTC thermistors, lead spacing 2.5 mm  
B57891M  
M891  
R/T characteristics  
2006  
2007  
2904  
R/T No.  
T (°C)  
B25/100 = 5000 K  
RT/R25  
B25/100 = 4830 K  
B25/100 = 4300 K  
α (%/K) RT/R25  
α (%/K) RT/R25  
α (%/K)  
ꢀ55.0 200.55  
ꢀ50.0 131.02  
8.7  
8.3  
8.0  
7.7  
7.4  
185.87  
123.23  
82.888  
56.544  
39.061  
8.4  
8.1  
7.8  
7.6  
7.3  
121.46  
84.439  
59.243  
41.938  
29.947  
7.4  
7.2  
7.1  
6.9  
6.7  
ꢀ45.0  
ꢀ40.0  
ꢀ35.0  
87.171  
58.988  
40.545  
ꢀ30.0  
ꢀ25.0  
ꢀ20.0  
ꢀ15.0  
ꢀ10.0  
28.272  
19.997  
14.292  
10.35  
7.1  
6.9  
6.6  
6.4  
6.4  
27.321  
19.326  
13.823  
10.001  
7.3067  
7.1  
6.8  
6.6  
6.4  
6.4  
21.567  
15.641  
11.466  
8.451  
6.6  
6.3  
6.2  
6.0  
5.9  
7.5614  
6.2927  
ꢀ5.0  
0.0  
5.0  
10.0  
15.0  
5.5343  
4.086  
3.0374  
2.276  
6.2  
6.0  
5.9  
5.7  
5.6  
5.3454  
3.9484  
2.9595  
2.2358  
1.7001  
6.2  
5.9  
5.7  
5.6  
5.4  
4.7077  
3.5563  
2.7119  
2.086  
5.7  
5.5  
5.3  
5.1  
5.0  
1.7188  
1.6204  
20.0  
25.0  
30.0  
35.0  
40.0  
1.3074  
1.0000  
0.76988  
0.5954  
0.46341  
5.5  
5.3  
5.2  
5.1  
4.9  
1.3021  
1.0000  
0.7756  
0.60507  
0.47498  
5.4  
5.2  
5.0  
4.9  
4.8  
1.2683  
1.0000  
0.7942  
0.63268  
0.5074  
4.8  
4.7  
4.6  
4.5  
4.3  
45.0  
50.0  
55.0  
60.0  
65.0  
0.36327  
0.28636  
0.2262  
0.17974  
0.1438  
4.8  
4.8  
4.7  
4.5  
4.4  
0.37533  
0.29823  
0.23763  
0.19041  
0.15356  
4.7  
4.6  
4.5  
4.4  
4.3  
0.41026  
0.33363  
0.27243  
0.2237  
4.2  
4.1  
4.0  
3.9  
3.8  
0.18459  
70.0  
75.0  
80.0  
85.0  
90.0  
0.1156  
4.3  
4.3  
4.2  
4.1  
3.9  
0.12442  
0.10131  
0.08286  
0.068004  
0.056032  
4.2  
4.1  
4.0  
3.9  
3.8  
0.15305  
0.12755  
0.10677  
0.089928  
0.076068  
3.7  
3.6  
3.5  
3.4  
3.3  
0.093296  
0.075623  
0.061619  
0.050414  
95.0  
100.0  
105.0  
110.0  
115.0  
0.041532  
0.034355  
0.028525  
0.023774  
0.019852  
3.8  
3.8  
3.7  
3.7  
3.6  
0.046379  
0.038533  
0.032169  
0.026952  
0.022658  
3.8  
3.7  
3.6  
3.5  
3.4  
0.064524  
0.054941  
0.047003  
0.040358  
0.034743  
3.3  
3.2  
3.1  
3.0  
3.0  
120.0  
125.0  
130.0  
135.0  
140.0  
0.016632  
0.014016  
3.5  
3.4  
ꢀ
ꢀ
ꢀ
0.019111  
0.016201  
3.3  
3.3  
ꢀ
ꢀ
ꢀ
0.030007  
0.026006  
0.022609  
0.01972  
2.9  
2.8  
2.8  
2.7  
2.6  
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
0.017251  
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
145.0  
150.0  
155.0  
0.015139  
0.013321  
0.011754  
2.6  
2.5  
2.5  
Please read Cautions and warnings and  
Important notes at the end of this document.  
Page 8 of 23  
Temperature measurement and compensation  
Leaded NTC thermistors, lead spacing 2.5 mm  
B57891M  
M891  
Please read Cautions and warnings and  
Important notes at the end of this document.  
Page 9 of 23  
Temperature measurement and compensation  
Leaded NTC thermistors, lead spacing 2.5 mm  
B57891M  
M891  
R/T characteristics  
4003  
4012  
4901  
R/T No.  
T (°C)  
B25/100 = 4450 K  
RT/R25  
B25/100 = 4355 K  
B25/100 = 3950 K  
α (%/K) RT/R25  
α (%/K) RT/R25  
α (%/K)  
ꢀ55.0 103.81  
6.8  
6.7  
6.6  
6.5  
6.4  
115.76  
80.102  
56.067  
39.677  
28.374  
7.5  
7.2  
7.0  
6.8  
6.6  
87.89  
7.1  
6.9  
6.7  
6.5  
6.3  
ꢀ50.0  
ꢀ45.0  
ꢀ40.0  
ꢀ35.0  
73.707  
52.723  
37.988  
27.565  
61.759  
43.934  
31.618  
23.006  
ꢀ30.0  
ꢀ25.0  
ꢀ20.0  
ꢀ15.0  
ꢀ10.0  
20.142  
14.801  
10.976  
8.1744  
6.1407  
6.2  
6.1  
5.9  
5.8  
5.7  
20.496  
14.949  
11.004  
8.1721  
6.1208  
6.4  
6.2  
6.0  
5.9  
5.7  
16.915  
12.555  
9.4143  
7.1172  
5.4308  
6.1  
5.9  
5.7  
5.5  
5.4  
ꢀ5.0  
0.0  
5.0  
10.0  
15.0  
4.6331  
3.5243  
2.6995  
2.0831  
1.6189  
5.5  
5.4  
5.3  
5.1  
5.0  
4.6219  
3.5176  
2.6973  
2.0834  
1.6205  
5.5  
5.4  
5.2  
5.1  
5.0  
4.1505  
3.2014  
2.5011  
1.9691  
1.5618  
5.2  
5.0  
4.9  
4.7  
4.6  
20.0  
25.0  
30.0  
35.0  
40.0  
1.2666  
1.0000  
0.78351  
0.62372  
0.49937  
4.9  
4.7  
4.6  
4.5  
4.4  
1.2689  
1.0000  
0.79302  
0.63266  
0.50765  
4.8  
4.7  
4.6  
4.5  
4.3  
1.2474  
1.0000  
0.808  
0.6569  
0.5372  
4.5  
4.3  
4.2  
4.1  
4.0  
45.0  
50.0  
55.0  
60.0  
65.0  
0.40218  
0.32557  
0.26402  
0.21527  
0.17693  
4.3  
4.2  
4.1  
4.0  
3.9  
0.40961  
0.33229  
0.27096  
0.22206  
0.18287  
4.2  
4.1  
4.0  
3.9  
3.8  
0.44235  
0.3661  
0.30393  
0.25359  
0.21283  
3.9  
3.8  
3.7  
3.6  
3.5  
70.0  
75.0  
80.0  
85.0  
90.0  
0.14616  
0.12097  
0.10053  
0.083761  
0.070039  
3.8  
3.7  
3.7  
3.6  
3.5  
0.1513  
3.7  
3.7  
3.6  
3.5  
3.4  
0.17942  
0.15183  
0.12901  
0.11002  
0.094179  
3.4  
3.3  
3.2  
3.1  
3.1  
0.12574  
0.10496  
0.087977  
0.074045  
95.0  
100.0  
105.0  
110.0  
115.0  
0.058937  
0.049777  
0.042146  
0.035803  
0.030504  
3.4  
3.4  
3.3  
3.2  
3.2  
0.062565  
0.053067  
0.045177  
0.038597  
0.03309  
3.3  
3.3  
3.2  
3.1  
3.0  
0.080896  
0.069722  
0.060397  
0.052493  
0.045733  
3.0  
2.9  
2.9  
2.8  
2.7  
120.0  
125.0  
130.0  
135.0  
140.0  
0.026067  
0.022332  
0.019186  
0.016515  
0.014253  
3.1  
3.0  
3.0  
2.9  
2.9  
0.028464  
0.024564  
3.0  
2.9  
ꢀ
ꢀ
ꢀ
0.039963  
0.035059  
0.030844  
0.027192  
0.024034  
2.7  
2.6  
2.6  
2.5  
2.4  
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
145.0  
150.0  
155.0  
0.012367  
0.010758  
0.0093933 2.7  
2.8  
2.8  
0.021285  
0.018895  
0.016813  
2.4  
2.4  
2.3  
Please read Cautions and warnings and  
Important notes at the end of this document.  
Page 10 of 23  
Temperature measurement and compensation  
Leaded NTC thermistors, lead spacing 2.5 mm  
B57891M  
M891  
Please read Cautions and warnings and  
Important notes at the end of this document.  
Page 11 of 23  
Temperature measurement and compensation  
Leaded NTC thermistors, lead spacing 2.5 mm  
B57891M  
M891  
Taping and packing  
1
Taping of radial leaded NTC thermistors  
Dimensions and tolerances  
Lead spacing F = 2.5 mm and 5.0 mm (taping to IEC 60286-2)  
Dimensions (mm)  
Lead  
spacing  
2.5 mm  
11.0  
5.0  
Lead  
spacing  
5 mm  
11.5  
6.0  
Tolerance of  
lead spacing  
2.5/5 mm  
max.  
Remarks  
b
s
max.  
d
0.5/0.6  
12.7  
5.1  
2.5  
0
0
18.0  
5.5  
9.0  
3.0  
0.5/0.6  
12.7  
3.85  
5.0  
0
0
18.0  
5.5  
9.0  
±0.05  
±0.3  
±0.7  
+0.6/ꢀ0.1  
±2.0  
±1.3  
±0.5  
min.  
+0.75/ꢀ0.5  
max.  
+2.0/ꢀ0  
±0.5  
P0  
P1  
F
∆h  
∆p  
W
W0  
W1  
W2  
H
±1 mm / 20 sprocket holes  
measured at top of component body  
peel-off force ≥5 N  
3.0  
18.0  
16.0  
32.2  
4.0  
18.0  
16.0  
32.2  
4.0  
H0  
H1  
D0  
t
max.  
±0.2  
max.  
0.9  
0.9  
without wires  
L
L1  
11.0  
4.0  
11.0  
4.0  
max.  
max.  
Please read Cautions and warnings and  
Important notes at the end of this document.  
Page 12 of 23  
Temperature measurement and compensation  
Leaded NTC thermistors, lead spacing 2.5 mm  
B57891M  
M891  
Types of packing  
Ammo packing  
Ammo  
type  
x
y
z
I
80  
240  
210  
Packing unit: 1000 - 2000 pcs./reel  
Reel packing  
Packing unit: 1000 - 2000 pcs./reel  
Reel dimensions (in mm)  
Reel type  
d
f
n
w
I
360 max.  
500 max.  
31 ±1  
23 ±1  
approx. 45  
approx. 59  
54 max.  
72 max.  
II  
Please read Cautions and warnings and  
Important notes at the end of this document.  
Page 13 of 23  
Temperature measurement and compensation  
Leaded NTC thermistors, lead spacing 2.5 mm  
B57891M  
M891  
Cassette packing  
Packing unit: 1000 - 2000 pcs./cassette  
Bulk packing  
The components are packed in cardboard boxes, the size of which depends on the order quantity.  
Please read Cautions and warnings and  
Important notes at the end of this document.  
Page 14 of 23  
Temperature measurement and compensation  
Leaded NTC thermistors, lead spacing 2.5 mm  
B57891M  
M891  
2
Packing codes  
The last two digits of the complete ordering code state the packing mode:  
Last two digits  
00, 01, 02, 03,04,  
05, 06, 07, 08  
ꢀ
Bulk  
ꢀ
40  
45  
50  
51  
52  
53  
54  
55  
60  
62  
70  
72  
ꢀ
Bulk  
ꢀ
ꢀ
Bulk  
ꢀ
Radial leads, kinked  
Radial leads, kinked  
Cardboard tape  
Cardboard tape  
Cassette packing  
360 or 500-mm reel packing  
Cassette packing  
Radial leads, straight Cardboard tape  
Radial leads, straight Cardboard tape  
360 or 500-mm reel packing  
AMMO packing  
Radial leads, kinked  
Cardboard tape  
Radial leads, straight Cardboard tape  
AMMO packing  
SMD  
SMD  
SMD  
SMD  
Cardboard tape  
Blister tape  
180-mm reel packing  
180-mm reel packing  
330-mm reel packing  
330-mm reel packing  
Cardboard tape  
Blister tape  
(If no packing code is indicated, this corresponds to 40)  
Example 1: B57164K0102J000  
B57164K0102J052  
Bulk  
Cardboard tape, cassette packing  
Example 2: B57881S0103F002  
B57881S0103F251  
Bulk  
Cardboard tape, reel packing  
Please read Cautions and warnings and  
Important notes at the end of this document.  
Page 15 of 23  
Temperature measurement and compensation  
Leaded NTC thermistors, lead spacing 2.5 mm  
B57891M  
M891  
Mounting instructions  
1
Soldering  
1.1  
Leaded NTC thermistors  
Leaded thermistors comply with the solderability requirements specified by CECC.  
When soldering, care must be taken that the NTC thermistors are not damaged by excessive  
heat. The following maximum temperatures, maximum time spans and minimum distances have  
to be observed:  
Dip soldering  
max. 260 °C  
max. 4 s  
Iron soldering  
max. 360 °C  
max. 2 s  
Bath temperature  
Soldering time  
Distance from thermistor  
min. 6 mm  
min. 6 mm  
Under more severe soldering conditions the resistance may change.  
1.2 Leadless NTC thermistors  
In case of NTC thermistors without leads, soldering is restricted to devices which are provided  
with a solderable metallization. The temperature shock caused by the application of hot solder  
may produce fine cracks in the ceramic, resulting in changes in resistance.  
To prevent leaching of the metallization, solder with silver additives or with a low tin content  
should be used. In addition, soldering methods should be employed which permit short soldering  
times.  
2
Clamp contacting  
Pressure contacting by means of clamps is particularly suitable for applications involving frequent  
switching and high turn-on powers.  
3
Robustness of terminations (leaded types)  
The leads meet the requirements of IEC 60068-2-21. They may not be bent closer than 4 mm  
from the solder joint on the thermistor body or from the point at which they leave the feed-  
throughs. During bending, any mechanical stress at the outlet of the leads must be removed. The  
bending radius should be at least 0.75 mm.  
Tensile strength: Test Ua1:  
Leads  
≤0.25 mm = 1.0 N  
≤0.35 mm = 2.5 N  
≤0.50 mm = 5.0 N  
≤0.80 mm = 10.0 N  
≤1.25 mm = 20.0 N  
0.25 <  
0.35 <  
0.50 <  
0.80 <  
Please read Cautions and warnings and  
Important notes at the end of this document.  
Page 16 of 23  
Temperature measurement and compensation  
Leaded NTC thermistors, lead spacing 2.5 mm  
B57891M  
M891  
Bending strength: Test Ub:  
Two 90°-bends in opposite directions at a weight of 0.25 kg.  
Torsional strength: Test Uc: severity 2  
The lead is bent by 90° at a distance of 6 to 6.5 mm from the thermistor body.  
The bending radius of the leads should be approx. 0.75 mm. Two torsions of  
180° each (severity 2).  
When subjecting leads to mechanical stress, the following should be observed:  
Tensile stress on leads  
During mounting and operation tensile forces on the leads are to be avoided.  
Bending of leads  
Bending of the leads directly on the thermistor body is not permissible.  
A lead may be bent at a minimum distance of twice the wire's diameter +2 mm from the solder  
joint on the thermistor body. During bending the wire must be mechanically relieved at its outlet.  
The bending radius should be at least 0.75 mm.  
Twisting of leads  
The twisting (torsion) by 180° of a lead bent by 90° is permissible at 6 mm from the bottom of the  
thermistor body.  
4
Sealing and potting  
When thermistors are sealed, potted or overmolded, there must be no mechanical stress caused  
by thermal expansion during the production process (curing / overmolding process) and during  
later operation. The upper category temperature of the thermistor must not be exceeded. Ensure  
that the materials used (sealing / potting compound and plastic material) are chemically neutral.  
5
Cleaning  
If cleaning is necessary, mild cleaning agents such as ethyl alcohol and cleaning gasoline are  
recommended. Cleaning agents based on water are not allowed. Ultrasonic cleaning methods are  
permissible.  
6
Storage  
In order to maintain their solderability, thermistors must be stored in a non-corrosive atmosphere.  
Humidity, temperature and container materials are critical factors.  
Do not store SMDs where they are exposed to heat or direct sunlight. Otherwise, the packing ma-  
terial may be deformed or SMDs may stick together, causing problems during mounting. After  
opening the factory seals, such as polyvinyl-sealed packages, use the SMDs as soon as possible.  
Please read Cautions and warnings and  
Important notes at the end of this document.  
Page 17 of 23  
Temperature measurement and compensation  
Leaded NTC thermistors, lead spacing 2.5 mm  
B57891M  
M891  
The components should be left in the original packing. Touching the metallization of unsoldered  
thermistors may change their soldering properties.  
Storage temperature:  
ꢀ25 °C up to 45 °C  
Relative humidity (without condensation):  
≤75% annual mean  
<95%, maximum 30 days per annum  
Solder the thermistors listed in this data book after shipment from EPCOS within the time speci-  
fied:  
SMDs:  
12 months  
24 months  
Leaded components:  
Please read Cautions and warnings and  
Important notes at the end of this document.  
Page 18 of 23  
Temperature measurement and compensation  
Leaded NTC thermistors, lead spacing 2.5 mm  
B57891M  
M891  
Cautions and warnings General  
See "Important notes" at the end of this document.  
Storage  
Store thermistors only in original packaging. Do not open the package prior to storage.  
Storage conditions in original packaging: storage temperature ꢀ25 °C ... +45 °C, relative  
humidity ≤75% annual mean, <95% maximum 30 days per annum, dew precipitation is  
inadmissible.  
Do not store thermistors where they are exposed to heat or direct sunlight. Otherwise, the  
packing material may be deformed or components may stick together, causing problems during  
mounting.  
Avoid contamination of thermistor surface during storage, handling and processing.  
Avoid storage of thermistors in harmful environments like corrosive gases (SOx, Cl etc).  
Use the components as soon as possible after opening the factory seals, i.e. the  
polyvinyl-sealed packages.  
Solder thermistors within the time specified after shipment from EPCOS.  
For leaded components this is 24 months, for SMDs 12 months.  
Handling  
NTC thermistors must not be dropped. Chip-offs or any other damage must not be caused  
during handling of NTCs.  
Do not touch components with bare hands. Gloves are recommended.  
Avoid contamination of thermistor surface during handling.  
Bending / twisting leads  
A lead (wire) may be bent at a minimum distance of twice the wire’s diameter plus 4 mm from  
the component head or housing. When bending ensure the wire is mechanically relieved at the  
component head or housing. The bending radius should be at least 0.75 mm.  
Twisting (torsion) by 180° of a lead bent by 90° is permissible at 6 mm from the bottom of the  
thermistor body.  
Soldering  
Use resin-type flux or non-activated flux.  
Insufficient preheating may cause ceramic cracks.  
Rapid cooling by dipping in solvent is not recommended.  
Complete removal of flux is recommended.  
Please read Cautions and warnings and  
Important notes at the end of this document.  
Page 19 of 23  
Temperature measurement and compensation  
Leaded NTC thermistors, lead spacing 2.5 mm  
B57891M  
M891  
Mounting  
Ensure that no thermo-mechanical stress occurs due to production processes (curing or  
overmolding processes) when thermistors are sealed, potted or overmolded or during their  
subsequent operation. The maximum temperature of the thermistor must not be exceeded.  
Ensure that the materials used (sealing/potting compound and plastic material) are chemically  
neutral.  
Electrodes/contacts must not be scratched or damaged before/during/after the mounting  
process.  
Contacts and housing used for assembly with the thermistor must be clean before mounting.  
Ensure that adjacent materials are designed for operation at temperatures comparable to the  
surface temperature of the thermistor. Be sure that surrounding parts and materials can  
withstand the temperature.  
Avoid contamination of the thermistor surface during processing.  
The connections of sensors (e.g. cable end, wire end, plug terminal) may only be exposed to  
an environment with normal atmospheric conditions.  
Tensile forces on cables or leads must be avoided during mounting and operation.  
Bending or twisting of cables or leads directly on the thermistor body is not permissible.  
Avoid using chemical substances as mounting aids. It must be ensured that no water or other  
liquids enter the NTC thermistors (e.g. through plug terminals). In particular, water based  
substances (e.g. soap suds) must not be used as mounting aids for sensors.  
Operation  
Use thermistors only within the specified operating temperature range.  
Use thermistors only within the specified power range.  
Environmental conditions must not harm the thermistors. Only use the thermistors under  
normal atmospheric conditions or within the specified conditions.  
Contact of NTC thermistors with any liquids and solvents should be prevented. It must be  
ensured that no water enters the NTC thermistors (e.g. through plug terminals). For  
measurement purposes (checking the specified resistance vs. temperature), the component  
must not be immersed in water but in suitable liquids (e.g. Galden).  
Avoid dewing and condensation unless thermistor is specified for these conditions.  
Bending or twisting of cables and/or wires is not permissible during operation of the sensor in  
the application.  
Be sure to provide an appropriate fail-safe function to prevent secondary product damage  
caused by malfunction.  
This listing does not claim to be complete, but merely reflects the experience of EPCOS AG.  
Please read Cautions and warnings and  
Important notes at the end of this document.  
Page 20 of 23  
Temperature measurement and compensation  
Leaded NTC thermistors, lead spacing 2.5 mm  
B57891M  
M891  
Symbols and terms  
Symbol  
English  
German  
Fläche  
A
Area  
AWG  
American Wire Gauge  
Amerikanische Norm für Drahtquerschnitte  
B
B value  
B-Wert  
B25/100  
B value determined by resistance  
measurement at 25 °C and 100 °C  
B-Wert, ermittelt durch Widerstands-  
messungen bei 25 °C und 100 °C  
Cth  
I
Heat capacitance  
Current  
Wärmekapazität  
Strom  
N
Number (integer)  
Anzahl (ganzzahliger Wert)  
P25  
Pdiss  
Pel  
Maximum power at 25 °C  
Power dissipation  
Electrical power  
Maximale Leistung bei 25 °C  
Verlustleistung  
Elektrische Leistung  
Pmax  
Maximum power within stated  
temperature range  
Maximale Leistung im  
angegebenenTemperaturbereich  
∆RB/RB  
Resistance tolerance caused by  
spread of B value  
Insulation resistance  
Parallel resistance  
Widerstandstoleranz, die durch die  
Streuung des B-Wertes verursacht wird  
Isolationswiderstand  
Rins  
RP  
Parallelwiderstand  
RR  
Rated resistance  
Nennwiderstand  
∆RR/RR  
RS  
Resistance tolerance  
Series resistance  
Widerstandstoleranz  
Serienwiderstand  
RT  
Resistance at temperature T  
(e.g. R25 = resistance at 25 °C)  
Widerstand bei Temperatur T  
(z.B. R25 = Widerstand bei 25 °C)  
T
Temperature  
Temperatur  
∆T  
t
Temperature tolerance  
Time  
Temperaturtoleranz  
Zeit  
TA  
Tmax  
Ambient temperature  
Upper category temperature  
Umgebungstemperatur  
Obere Grenztemperatur  
(Kategorietemperatur)  
Untere Grenztemperatur  
(Kategorietemperatur)  
Tmin  
Lower category temperature  
Top  
TR  
Tsurf  
Operating temperature  
Rated temperature  
Surface temperature  
Betriebstemperatur  
Nenntemperatur  
Oberflächentemperatur  
V
Voltage  
Spannung  
Vins  
Vop  
Vtest  
Insulation test voltage  
Operating voltage  
Test voltage  
Isolationsprüfspannung  
Betriebsspannung  
Prüfspannung  
Please read Cautions and warnings and  
Important notes at the end of this document.  
Page 21 of 23  
Temperature measurement and compensation  
Leaded NTC thermistors, lead spacing 2.5 mm  
B57891M  
M891  
Symbol  
English  
German  
α
Temperature coefficient  
Tolerance, change  
Dissipation factor  
Temperaturkoeffizient  
Toleranz, Änderung  
Wärmeleitwert  
∆
δth  
τc  
τa  
Thermal cooling time constant  
Thermal time constant  
Thermische Abkühlzeitkonstante  
Thermische Zeitkonstante  
Abbreviations / Notes  
Symbol  
English  
German  
Surface-mounted devices  
Oberflächenmontierbares Bauelement  
*
To be replaced by a number in ordering Platzhalter für Zahl im Bestellnummern-  
codes, type designations etc.  
code oder für die Typenbezeichnung.  
Platzhalter für einen Buchstaben.  
Alle Maße sind in mm angegeben.  
+
To be replaced by a letter.  
All dimensions are given in mm.  
The commas used in numerical values Verwendete Kommas in Zahlenwerten  
denote decimal points. bezeichnen Dezimalpunkte.  
Please read Cautions and warnings and  
Important notes at the end of this document.  
Page 22 of 23  
Important notes  
The following applies to all products named in this publication:  
1. Some parts of this publication contain statements about the suitability of our products for  
certain areas of application. These statements are based on our knowledge of typical re-  
quirements that are often placed on our products in the areas of application concerned. We  
nevertheless expressly point out that such statements cannot be regarded as binding  
statements about the suitability of our products for a particular customer application.  
As a rule, EPCOS is either unfamiliar with individual customer applications or less familiar  
with them than the customers themselves. For these reasons, it is always ultimately incum-  
bent on the customer to check and decide whether an EPCOS product with the properties de-  
scribed in the product specification is suitable for use in a particular customer application.  
2. We also point out that in individual cases, a malfunction of electronic components or  
failure before the end of their usual service life cannot be completely ruled out in the  
current state of the art, even if they are operated as specified. In customer applications  
requiring a very high level of operational safety and especially in customer applications in  
which the malfunction or failure of an electronic component could endanger human life or  
health (e.g. in accident prevention or lifesaving systems), it must therefore be ensured by  
means of suitable design of the customer application or other action taken by the customer  
(e.g. installation of protective circuitry or redundancy) that no injury or damage is sustained by  
third parties in the event of malfunction or failure of an electronic component.  
3. The warnings, cautions and product-specific notes must be observed.  
4. In order to satisfy certain technical requirements, some of the products described in this  
publication may contain substances subject to restrictions in certain jurisdictions (e.g.  
because they are classed as hazardous). Useful information on this will be found in our Ma-  
terial Data Sheets on the Internet (www.epcos.com/material). Should you have any more de-  
tailed questions, please contact our sales offices.  
5. We constantly strive to improve our products. Consequently, the products described in this  
publication may change from time to time. The same is true of the corresponding product  
specifications. Please check therefore to what extent product descriptions and specifications  
contained in this publication are still applicable before or when you place an order. We also  
reserve the right to discontinue production and delivery of products. Consequently, we  
cannot guarantee that all products named in this publication will always be available. The  
aforementioned does not apply in the case of individual agreements deviating from the fore-  
going for customer-specific products.  
6. Unless otherwise agreed in individual contracts, all orders are subject to the current ver-  
sion of the "General Terms of Delivery for Products and Services in the Electrical In-  
dustry" published by the German Electrical and Electronics Industry Association  
(ZVEI).  
7. The trade names EPCOS, BAOKE, Alu-X, CeraDiode, CSMP, CSSP, CTVS, DSSP,  
MiniBlue, MKK, MLSC, MotorCap, PCC, PhaseCap, PhaseCube, PhaseMod, SIFERRIT,  
SIFI, SIKOREL, SilverCap, SIMDAD, SIMID, SineFormer, SIOV, SIP5D, SIP5K, ThermoFuse,  
WindCap are trademarks registered or pending in Europe and in other countries. Further  
information will be found on the Internet at www.epcos.com/trademarks.  
Page 23 of 23  

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