NTC thermistors for
temperature measurement
SMD NTC thermistors,
EIA case size 0402 (1005), standard series
Series/Type:
Date:
B572**V2
January 2018
© EPCOS AG 2018. Reproduction, publication and dissemination of this publication, enclosures hereto and the
information contained therein without EPCOS' prior express consent is prohibited.
EPCOS AG is a TDK Group Company.
Temperature measurement and compensation
SMD NTC thermistors, case size 0402 (1005)
B572**V2
Standard series
Applications
Temperature measurement and
compensation
Features
Multilayer SMD NTC with inner electrodes
Nickel barrier termination
For temperature measurement up to 125
°C
Excellent long-term aging stability in high
temperature environment
High mechanical robustness
Short response time
100% Pb free
UL approval (E69802)
Options
Alternative resistance ratings, resistance
tolerances and B value tolerances available
on request.
Delivery mode
Cardboard tape, 180-mm reel
General technical data
Operating temperature range
Max. power
Resistance tolerance
Rated temperature
Dissipation factor
Thermal cooling time constant
Heat capacity
Dimensional drawing
Dimensions in mm
Approx. weight 2 mg
T
op
(at 25
°C,
on PCB) P
251)
∆R
R
/R
R
T
R
(on PCB)
δ
th1)
(on PCB)
τ
c1)
C
th1)
55 ... 125
150
±1, ±3, ±5
25
approx. 2.5
approx. 3
approx. 7.5
°C
mW
%
°C
mW/K
s
mJ/K
1) Depends on mounting situation
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 2 of 27
Temperature measurement and compensation
SMD NTC thermistors, case size 0402 (1005)
B572**V2
Standard series
Electrical specification and ordering codes
R
25
Ω
3.3 k
4.7 k
10 k
10 k
22 k
47 k
47 k
100 k
∆R
R
/R
R
%
±5
±5
±1, ±3, ±5
±5
±5
±5
±1, ±3, ±5
±1, ±3, ±5
No. of R/T
characteristic
8502
8502
8509
8502
8506
8502
8551
8552
B
25/50
K
3940
3940
3380
3940
4473
3940
4050
4250
B
25/85
K
3980
3980
3435
3980
4548
3980
4108
4311
B
25/100
K
4000
±3%
4000
±3%
3455
±1%
4000
±3%
4575
±3%
4000
±3%
4131
±1%
4334
±1%
Ordering code
B57221V2332J060
B57221V2472J060
B57230V2103+260
B57221V2103J060
B57261V2223J060
B57221V2473J060
B57250V2473+560
B57250V2104+360
+ = Resistance tolerance
F =
±1%
H =
±3%
J =
±5%
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 3 of 27
Temperature measurement and compensation
SMD NTC thermistors, case size 0402 (1005)
B572**V2
Standard series
Reliability data
SMD NTC thermistors are tested in accordance with IEC 60068. The parts are mounted on a
standardized PCB in accordance with IEC 60539-1.
Test
Storage in
dry heat
Standard
IEC
60068-2-2
JIS C 0021
Test conditions
∆R
25
/R
25
(typical)
< 2%
Remarks
Storage in damp
heat, steady state
Rapid temperature
cycling
Endurance
Solderability
Storage at upper
category temperature
T: (125
±2) °C
t: 1000 h
IEC
Temperature of air: (40
±2) °C
60068-2-78 Relative humidity of air:
JIS C 0022 (93 +2/ 3)%
Duration: 56 days
IEC
Lower test temperature: 55
°C
60068-2-14 Upper test temperature: 125
°C
JIS C 0025 Number of cycles: 100
P
max
: 150 mW
T: (65
±2) °C
t: 1000 h
IEC
Solderability:
60068-2-58 (215
±3) °C,
(3
±0.3)
s
JIS C 0054 (245
±5) °C,
(3
±0.3)
s
Resistance to soldering heat:
(260
±5) °C,
(10
±1)
s
Reflow soldering profile
< 2%
< 2%
< 2%
95% of
terminations
wetted
Resistance drift
after soldering
< 1%
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 4 of 27
Temperature measurement and compensation
SMD NTC thermistors, case size 0402 (1005)
B572**V2
Standard series
R/T characteristics
R/T No.
T (°C)
55.0
50.0
45.0
40.0
35.0
30.0
25.0
20.0
15.0
10.0
5.0
0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
65.0
70.0
75.0
80.0
85.0
90.0
95.0
100.0
105.0
110.0
115.0
120.0
125.0
130.0
135.0
140.0
145.0
150.0
8502
8506
8509
B
25/100
= 4000 K
B
25/100
= 4575 K
B
25/100
= 3455 K
R
T
/R
25
α
(%/K) R
T
/R
25
α
(%/K) R
T
/R
25
α
(%/K)
96.158
66.892
47.127
33.606
24.243
17.681
13.032
9.702
7.2923
5.5314
4.2325
3.2657
2.54
1.9907
1.5716
1.2494
1.0000
0.80552
0.65288
0.53229
0.43645
0.35981
0.29819
0.24837
0.20787
0.17479
0.14763
0.12523
0.10667
0.091227
0.078319
0.067488
0.058363
0.050647
0.044098
0.03852
0.033752
0.029663
0.026146
0.023111
0.020484
0.018203
7.4
7.1
6.9
6.6
6.4
6.2
6.0
5.8
5.6
5.4
5.3
5.1
4.9
4.8
4.7
4.5
4.4
4.3
4.1
4.0
3.9
3.8
3.7
3.6
3.5
3.4
3.3
3.2
3.2
3.1
3.0
2.9
2.9
2.8
2.7
2.7
2.6
2.6
2.5
2.4
2.4
2.3
154.6
104.37
71.361
49.386
34.574
24.471
17.503
12.646
9.2241
6.7905
5.0433
3.7775
2.8525
2.1709
1.6647
1.2857
1.0000
0.783
0.61707
0.48934
0.39039
0.31326
0.25277
0.20507
0.16724
0.13707
0.1129
0.093421
0.077657
0.064837
0.054364
0.045769
0.038687
0.032827
0.027958
0.023897
0.020498
8.0
7.7
7.5
7.2
7.0
6.8
6.6
6.4
6.2
6.0
5.9
5.7
5.5
5.4
5.2
5.1
5.0
4.8
4.7
4.6
4.5
4.3
4.2
4.1
4.0
3.9
3.8
3.7
3.7
3.6
3.5
3.4
3.3
3.2
3.2
3.1
3.0
44.605
33.281
25.044
19.003
14.536
11.206
8.7041
6.8104
5.3665
4.2576
3.4001
2.7326
2.2096
1.7973
1.4703
1.2093
1.0000
0.83113
0.69418
0.58255
0.49112
0.41587
0.35365
0.30197
0.25888
0.22278
0.19243
0.16681
0.1451
0.12663
0.11088
0.097381
0.085788
0.075795
0.067155
0.059663
0.053146
0.047463
0.042493
0.038134
0.034302
0.030925
5.9
5.8
5.6
5.4
5.3
5.1
5.0
4.8
4.7
4.6
4.4
4.3
4.2
4.1
4.0
3.9
3.7
3.6
3.6
3.5
3.4
3.3
3.2
3.1
3.0
3.0
2.9
2.8
2.8
2.7
2.6
2.6
2.5
2.4
2.4
2.3
2.3
2.2
2.2
2.1
2.1
2.1
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 5 of 27
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