NTC thermistors for
temperature measurement
SMD NTC thermistors,
case size 0603 (1608), standard series
Series/Type:
Date:
B573**V2
November 2012
© EPCOS AG 2012. 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 0603 (1608)
B573**V2
Standard series
Applications
Temperature measurement and
compensation
Features
Multilayer SMD NTC with inner electrodes
Nickel barrier termination
Excellent long-term aging stability in high
temperature environment
Options
Alternative resistance ratings, resistance
tolerances and B value tolerances available
on request.
Delivery mode
Cardboard tape, 180-mm reel (standard);
330-mm reel (on request)
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 6 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
180
±1, ±3, ±5
25
approx. 3
approx. 4
approx. 12
°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 21
Temperature measurement and compensation
SMD NTC thermistors, case size 0603 (1608)
B573**V2
Standard series
Electrical specification and ordering codes
R
25
Ω
1.0 k
2.2 k
4.7 k
6.8 k
10 k
10 k
10 k
10 k
10 k
22 k
22 k
47 k
47 k
68 k
100 k
100 k
100 k
470 k
No. of R/T
characteristic
8502
8502
8500
8507
8500
8502
8507
8509
8509
8502
8507
8502
8507
8507
8507
8507
8507
8507
B
25/50
K
3940
3940
3590
4386
3590
3940
4386
3380
3380
3940
4386
3940
4386
4386
4386
4386
4386
4386
B
25/85
K
3980
3980
3635
4455
3635
3980
4455
3435
3435
3980
4455
3980
4455
4455
4455
4455
4455
4455
B
25/100
K
4000
±3%
4000
±3%
3650
±3%
4480
±3%
3650
±3%
4000
±3%
4480
±3%
3455
±1%
3455
±1%
4000
±3%
4480
±3%
4000
±3%
4480
±3%
4480
±3%
4480
±1%
4480
±1%
4480
±3%
4480
±3%
Ordering code
B57321V2102+060
B57321V2222+060
B57301V2472+060
B57371V2682+060
B57301V2103+060
B57321V2103+060
B57371V2103+060
B57330V2103+260
B57330V2103F260
B57321V2223+060
B57371V2223+060
B57321V2473+060
B57371V2473+060
B57371V2683+060
B57374V2104+060
B57374V2104F060
B57371V2104+060
B57371V2474+060
+ = Resistance tolerance
F =
±1%
(only for B57330V2103F260 and B57374V2104F060)
H =
±3%
J =
±5%
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 3 of 21
Temperature measurement and compensation
SMD NTC thermistors, case size 0603 (1608)
B573**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
1)
IEC
Lower test temperature: 55
°C
60068-2-14 Upper test temperature: 125
°C
JIS C 0025 Number of cycles: 100
2)
P
max
: 180 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
Wave 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 21
Temperature measurement and compensation
SMD NTC thermistors, case size 0603 (1608)
B573**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
8500
8502
B
25/100
= 3650 K
B
25/100
= 4000 K
R
T
/R
25
α
(%/K) R
T
/R
25
α
(%/K)
63.917
45.889
33.344
24.504
18.201
13.657
10.347
7.9114
6.1019
4.7454
3.7198
2.938
2.3372
1.8722
1.5096
1.2249
1.0000
0.82111
0.67798
0.56279
0.46958
0.39374
0.33171
0.28073
0.23863
0.2037
0.17459
0.15022
0.12975
0.11247
0.097838
0.085396
0.074781
0.065691
0.057883
0.051153
0.045335
0.040289
0.0359
0.032071
0.028723
0.025786
6.8
6.5
6.3
6.1
5.8
5.6
5.5
5.3
5.1
4.9
4.8
4.6
4.5
4.4
4.2
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
2.8
2.7
2.6
2.6
2.5
2.4
2.4
2.3
2.3
2.2
2.2
2.1
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
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 5 of 21
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