NTC thermistors for
temperature measurement
SMD NTC thermistors,
case size 0402 (1005)
Series/Type:
B572**V2
The following products presented in this data sheet are being withdrawn.
Ordering Code
B57211V2472J060
B57211V2471J060
Substitute Product
Date of
Withdrawal
2010-06-01
2010-06-01
Deadline Last
Orders
2010-09-01
2010-09-01
Last Shipments
2010-12-01
2010-12-01
For further information please contact your nearest EPCOS sales office, which will also support
you in selecting a suitable substitute. The addresses of our worldwide sales network are
presented at www.epcos.com/sales.
© 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
SMD NTC thermistors, case size 0402 (1005)
B572**V2
Applications
Temperature measurement and
compensation
Features
Multilayer SMD NTC with inner electrodes
Nickel barrier termination
Excellent long-term aging stability in
high-temperature environment
Superior resistance stability during soldering
(change <1%)
Options
Alternative resistance ratings, resistance
tolerances and B value tolerances available
on request.
Delivery mode
Cardboard tape, 180-mm reel
General technical data
Climatic category
Max. power
Resistance tolerance
Rated temperature
Dissipation factor
Thermal cooling time constant
Heat capacity
Dimensional drawing
Dimensions in mm
Approx. weight 4.5 mg
(IEC 60068-1)
(at 25
°C,
on PCB) P
251)
∆R
R
/R
R
T
R
(on PCB)
δ
th1)
(on PCB)
τ
c1)
C
th1)
55/125/56
150
±5
25
approx. 2.5
approx. 3
approx. 7.5
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 18
Temperature measurement and compensation
SMD NTC thermistors, case size 0402 (1005)
B572**V2
Electrical specification and ordering codes
R
25
Ω
470
3.3 k
4.7 k
4.7 k
10 k
22 k
33 k
47 k
No. of R/T
characteristic
8501
8502
8501
8502
8502
8506
8506
8502
B
25/50
K
3500
3940
3500
3940
3940
4473
4473
3940
B
25/85
K
3540
3980
3540
3980
3980
4548
4548
3980
B
25/100
K
3550
±3%
4000
±3%
3550
±3%
4000
±3%
4000
±3%
4575
±3%
4575
±3%
4000
±3%
Ordering code
B57211V2471J060
B57221V2332J060
B57211V2472J060
B57221V2472J060
B57221V2103J060
B57261V2223J060
B57261V2333J060
B57221V2473J060
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 (235
±5) °C,
(2
±0.2)
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 3 of 18
Temperature measurement and compensation
SMD NTC thermistors, case size 0402 (1005)
B572**V2
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
8501
8502
8506
B
25/100
= 3550 K
B
25/100
= 4000 K
B
25/100
= 4575 K
R
T
/R
25
α
(%/K) R
T
/R
25
α
(%/K) R
T
/R
25
α
(%/K)
56.633
41.134
30.209
22.42
16.807
12.721
9.7156
7.4854
5.8152
4.5537
3.5931
2.8558
2.2857
1.8416
1.4934
1.2184
1.0000
0.82537
0.68495
0.57139
0.47905
0.40358
0.34158
0.2904
0.24795
0.21259
0.183
0.15813
0.13715
0.11938
0.10427
0.091375
0.080333
0.070846
0.062666
0.055592
0.049454
6.5
6.3
6.1
5.9
5.7
5.5
5.3
5.1
5.0
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
3.1
3.0
3.0
2.9
2.8
2.7
2.7
2.6
2.5
2.5
2.4
2.4
2.3
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
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 4 of 18
Temperature measurement and compensation
SMD NTC thermistors, case size 0402 (1005)
B572**V2
Taping and packing
1
1.1
Taping of SMD NTC thermistors
Cardboard tape for case size 0402 and 0603 (taping to IEC 60286-3)
Dimensions (mm)
Case size
0402
(8-mm tape)
A
0
×
B
0
T
2
T
D
0
P
0
P
2
P
1
W
E
F
G
0.60
×
1.15
0.70
0.60
1.50
4.00
2.00
2.00
8.00
1.75
3.50
0.75
Case size
0603
(8-mm tape)
0.95
×
1.80
1.10
0.90
1.50
4.00
2.00
4.00
8.00
1.75
3.50
0.75
Tolerance
±0.2
max.
max.
±0.10
±0.10
1)
±0.05
±0.10
±0.30
±0.10
±0.05
min.
1)
≤0.2
mm over 10 sprocket holes.
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 5 of 18
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