48 05/02
SMD NTC thermistors with nickel barrier termination
Temperature Measurement
Applications
■ Temperature measurement and compensation in
– mobile phone applications (e.g. battery pack, TCXO, LCD)
– data systems
– automotive electronics
Features
■ Multilayer SMD NTC with inner electrodes
■ Ni barrier termination (Ag/Ni/Sn)
■ High accuracy: ± 5 % in resistance,
B value tolerance down to
± 1,5 % available on request
■ Excellent long-term ageing stability in high-temperature
and high-humidity environment
■ Superior resistance stability during soldering (change < 1 %)
Options
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) P
25
1)
Resistance tolerance ∆R
N
/R
N
Rated temperature T
N
B value tolerance ∆B/B
Dissipation factor (on PCB)
δ
th
1)
Thermal cooling time constant (on PCB) τ
c
1)
Heat capacity C
th
1)
55/125/56
150
± 5 %, ± 10 %
25
± 3 %
approx. 2,5
approx. 3,0
approx. 7,5
mW
°C
mW/K
s
mJ/K
R
25
Ω
No. of R/T
characteristic
B
25/50
K
B
25/85
K
B
25/100
K
Ordering code
100 8501 3470 3540 3550 B57211V2101+060
150 8501 3470 3540 3550 B57211V2151+060
220 8501 3470 3540 3550 B57211V2221+060
330 8501 3470 3540 3550 B57211V2331+060
470 8501 3470 3540 3550 B57211V2471+060
1,0 k 8502 3940 3980 4000 B57221V2102+060
1,5 k 8502 3940 3980 4000 B57221V2152+060
2,2 k 8502 3940 3980 4000 B57221V2222+060
3,3 k 8502 3940 3980 4000 B57221V2332+060
4,7 k 8502 3940 3980 4000 B57221V2472+060
10 k 8502 3940 3980 4000 B57221V2103+060
Dimensions in mm
Approx. weight 4,5 mg
Termination
0,25±0,15
0,5±0,05
1,0±0,1
TNT0395-Q
0,6 max.
1) Depends on mounting situation
B572**
V2**
SMD NTC Thermistors with Nickel Barrier Termination, Size 0402
