Temperature Measurement
SMD NTC Thermistors with Nickel Barrier Termination, Size 0402
SMD NTC thermistors with nickel barrier termination
Applications
I
Temperature measurement and compensation in
B572**
V 2**
0,6 max.
0,5±0,05
Features
I
Multilayer SMD NTC with inner electrodes
I
Ni barrier termination (Ag/Ni/Sn)
I
High accuracy:
±
5 % in resistance,
Termination
0,25±0,15
– mobile phone applications (e.g. battery pack, TCXO, LCD)
– data systems
– automotive electronics
1,0±0,1
TNT0395-Q
B
value tolerance down to
±
1,5 % available on request
I
Excellent long-term ageing stability in high-temperature
and high-humidity environment
I
Superior resistance stability during soldering (change < 1 %)
Options
Dimensions in mm
Approx. weight 4,5 mg
Alternative resistance ratings, resistance tol.
<
5 % and
B
value tol. < 3 % available on request
Delivery mode
Cardboard tape, 180-mm reel, PU: 10000 pcs
Climatic category (IEC 60068-1)
Max. power at 25
°
C (on PCB)
Resistance tolerance
Rated temperature
B
value tolerance
Dissipation factor (on PCB)
Thermal cooling time constant (on PCB)
Heat capacity
R
25
No. of
R/T
characteristic
8501
8501
8501
8501
8501
8502
8502
8502
8502
8502
8502
B
25/50
K
3470
3470
3470
3470
3470
3940
3940
3940
3940
3940
3940
P
25
1)
∆
R
N
/R
N
T
N
∆
B/B
δ
th
1)
τ
c
1)
C
th
1)
B
25/85
K
3540
3540
3540
3540
3540
3980
3980
3980
3980
3980
3980
55/125/56
150
±
5 %,
±
10 %
25
±
3%
approx. 2,5
approx. 3,0
approx. 7,5
B
25/100
K
3550
3550
3550
3550
3550
4000
4000
4000
4000
4000
4000
B57211V2101+060
B57211V2151+060
B57211V2221+060
B57211V2331+060
B57211V2471+060
B57221V2102+060
B57221V2152+060
B57221V2222+060
B57221V2332+060
B57221V2472+060
B57221V2103+060
mW
°
C
mW/K
s
mJ/K
Ordering code
Ω
100
150
220
330
470
1,0 k
1,5 k
2,2 k
3,3 k
4,7 k
10 k
1) Depends on mounting situation
48
05/02
Temperature Measurement
SMD NTC Thermistors with Nickel Barrier Termination, Size 0402
B572**
V 2**
R
25
No. of
R/T
characteristic
8503
8503
8503
8503
8503
B
25/50
K
4390
4390
4390
4390
4390
B
25/85
K
4470
4470
4470
4470
4470
B
25/100
K
4500
4500
4500
4500
4500
Ordering code
Ω
10 k
15 k
22 k
33 k
47 k
B57231V2103+060
B57231V2153+060
B57231V2223+060
B57231V2333+060
B57231V2473+060
+: J for
∆
R
N
/R
N
=
±
5 %
K for
∆
R
N
/R
N
=
±
10 %
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
IEC
60068-2-3
JIS C 0022
IEC
60068-2-14
JIS C 0025
Test conditions
Storage at upper
category temperature
T:
(125
±
2)
°
C
t:
1000 h
Temperature of air: (40
±
2)
°
C
Relative humidity of air:
(93 +2/–3) %
Duration: 56 days
∆
R
25
/R
25
(typical)
<2%
Remarks
Storage in damp
heat, steady state
<2%
Rapid temperature
cycling
Endurance
Lower test temperature: – 55
°
C < 2 %
Upper test temperature: 125
°
C
Number of cycles: 100
P
max
: 150 mW
T:
(65
±
2)
°
C
t:
1000 h
<2%
Solderability
IEC
60068-2-58
JIS C 0054
Solderability:
(215
±
3)
°
C / (3
±
0,3) s
(235
±
5)
°
C / (2
±
0,2) s
Resistance to soldering heat:
(260
±
5)
°
C / (10
±
1) s
95 % of
terminations
wetted
Resistance drift
after soldering
Reflow soldering profile
<1%
49
05/02
Herausgegeben von EPCOS AG
Unternehmenskommunikation, Postfach 80 17 09, 81617 München, DEUTSCHLAND
++49 89 636 09, FAX (0 89) 636-2 26 89
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++49 89 636 09, FAX (0 89) 636-2 26 89
EPCOS AG 2002. Reproduction, publication and dissemination of this brochure and the information contained therein without
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