Multilayer NTC Thermistor
SMD NTC Thermistor Series with Ni-Barrier
DATA SHEET
V - Series
B57xxx-V2xxx-xxx
General Description
EPCOS offers a new series of surface mountable NTC thermistors with the smallest chip sizes
available on the market today. These high quality SMD thermistors in multilayer technology with inner
electrodes with almost no change (<1%) of resistance value after soldering offer a superior resistance
stability. They were developed for a variety of applications for the specific demands of our customers
in the telecom and automotive industry.
Features
-
Multilayer SMD NTC with inner electrodes
-
Ni - Barrier termination (Ag/Ni/Sn)
-
Standard EIA chip sizes 0402, 0603, 0805
-
High accuracy:
±5%
in resistance, B-value tolerance down to ±1,5% available
-
Excellent long term ageing stability in high temperature and high humidity environment
-
Superior resistance stability during soldering, therefore almost no change (<1%) during soldering
Applications
- Temperature measurement and compensation for telecom, automotive and data systems
Ni - Barrier Series
B
25/50
/ K
R25 / 0402 0603 0805
Ω
47
100
150
220
330
470
680
1k
1,5k
2,2k
3,3k
4,7k
6,8k
10k
15k
22k
33k
47k
68k
100k
3470
3470
3470
3940
3940
3940
4390
4390
4390
B
25/85
/ K
R25 / 0402 0603 0805
Ω
47
100
150
220
330
470
680
1k
1,5k
2,2k
3,3k
4,7k
6,8k
10k
15k
22k
33k
47k
68k
100k
3540
3540
3540
3980
3980
3980
4470
4470
4470
B
25/100
/K
(specified)
R25 / 0402 0603 0805
Ω
47
100
150
220
330
470
680
1k
1,5k
2,2k
3,3k
4,7k
6,8k
10k
15k
22k
33k
47k
68k
100k
3550
3550
4000
4000
4500
4500
4500
4000
3550
The B-value is calculated between two specified ambient temperatures. This B-characteristic is indicated by the slope of the
linear plot. Therefore the given B-values in the three tables above represent one and the same part measured at different
temperature references (25/50°C; 25/85°C; 25/100°C).
KB VS PM
Revision 2001/d
Page 1 of 13
12.10.2001
Multilayer NTC Thermistor
SMD NTC Thermistor Series with Ni-Barrier
DATA SHEET
How to order
V - Series
B57xxx-V2xxx-xxx
e.g. case size 0603, R
25
=10kΩ ± 5%, B
25/100
=4500 K ± 3%, paper taped, Ø180 mm reel
Í
ordering code: B57331- V2103-J60
B57
NTC thermistor
3
31
-
V 2 103
-
J
60
2 = EIA Chip Size 0402
3 = EIA Chip Size 0603
4 = EIA Chip Size 0805
B
25/100
- value / tolerance code:
B – tolerance
B-value
3550 K
4000 K
4500 K
3%
2% 1.5%
11 12
13
21 22
23
31 32
33
Multilayer SMD NTC
Termination type:
2 = Ag/Ni/Sn
(1 = AgPt)
(0 = AgPd)
3
Resistance at rated temp. (25°C):
103 = 10 x 10
Ω
= 10 kΩ
Resistance Tolerance:
J=
±
5%
K =
±
10 %
M =
±
20 %
Option
Packaging codes:
60 = cardboard tape, 180mm reel
70 = cardboard tape, 330mm reel
62 = blister tape, 180mm reel
72 = blister tape, 330mm reel
KB VS PM
Revision 2001/d
Page 2 of 13
12.10.2001
Multilayer NTC Thermistor
SMD NTC Thermistor Series with Ni-Barrier
DATA SHEET
V - Series
B57xxx-V2xxx-xxx
Case Size Resistance
0402
100
Ω
150
Ω
220
Ω
330
Ω
470
Ω
1 kΩ
1,5 kΩ
2,2 kΩ
3,3 kΩ
4,7 kΩ
10 kΩ
15 kΩ
22 kΩ
33 kΩ
47 kΩ
47
Ω
100
Ω
150
Ω
220
Ω
330
Ω
470
Ω
680
Ω
1 kΩ
1,5 kΩ
2,2 kΩ
3,3 kΩ
4,7 kΩ
6,8 kΩ
10 kΩ
15 kΩ
22 kΩ
33 kΩ
47 kΩ
68 kΩ
100 kΩ
B
25/50
3470 K
B
25/85
3450 K
B
25/100
3550 K
Part Number
B57211-V2101-*60
B57211-V2151-*60
B57211-V2221-*60
B57211-V2331-*60
B57211-V2471-*60
B57221-V2102-*60
B57221-V2152-*60
B57221-V2222-*60
B57221-V2332-*60
B57221-V2472-*60
B57231-V2103-*60
B57231-V2153-*60
B57231-V2223-*60
B57231-V2333-*60
B57231-V2473-*60
B57311-V2470-*60
B57311-V2101-*60
B57311-V2151-*60
B57311-V2221-*60
B57311-V2331-*60
B57321-V2471-*60
B57321-V2681-*60
B57321-V2102-*60
B57321-V2152-*60
B57331-V2222-*60
B57331-V2332-*60
B57331-V2472-*60
B57331-V2682-*60
B57331-V2103-*60
B57331-V2153-*60
B57331-V2223-*60
B57331-V2333-*60
B57331-V2473-*60
B57331-V2683-*60
B57331-V2104-*60
3940 K
3980 K
4000 K
4390 K
4470 K
4500 K
0603
3470 K
3450 K
3550 K
3940 K
3980 K
4000 K
4390 K
4470 K
4500 K
* = Resistance Tolerance: J
K
for
∆R/R
25
= ± 5%
for
∆R/R
25
= ± 10%
M
for
∆R/R
25
= ± 20%
Alternative resistance ratings, resistance tolerance < 5% and B-value tolerance < 3% on request.
KB VS PM
Revision 2001/d
Page 3 of 13
12.10.2001
Multilayer NTC Thermistor
SMD NTC Thermistor Series with Ni-Barrier
DATA SHEET
V - Series
B57xxx-V2xxx-xxx
Case Size Resistance
0805
47
Ω
100
Ω
150
Ω
220
Ω
330
Ω
470
Ω
680
Ω
1 kΩ
1,5 kΩ
2,2 kΩ
3,3 kΩ
4,7 kΩ
6,8 kΩ
10 kΩ
15 kΩ
22 kΩ
33 kΩ
47 kΩ
68 kΩ
100 kΩ
B
25/50
3470 K
B
25/85
3540 K
B
25/100
3550 K
Part Number
B57411-V2470-*62
B57411-V2101-*62
B57411-V2151-*62
B57411-V2221-*62
B57411-V2331-*62
B57421-V2471-*62
B57421-V2681-*62
B57421-V2102-*62
B57421-V2152-*62
B57431-V2222-*62
B57431-V2332-*62
B57431-V2472-*60
B57431-V2682-*62
B57431-V2103-*62
B57431-V2153-*62
B57431-V2223-*62
B57431-V2333-*62
B57431-V2473-*62
B57431-V2683-*62
B57431-V2104-*62
3940K
3980 K
4000 K
4390 K
4470K
4500 K
* = Resistance Tolerance: J
K
for
∆R/R
25
= ± 5%
for
∆R/R
25
= ± 10%
M
for
∆R/R
25
= ± 20%
Alternative resistance ratings, resistance tolerance < 5% and B-value tolerance < 3% on request.
KB VS PM
Revision 2001/d
Page 4 of 13
12.10.2001
Multilayer NTC Thermistor
SMD NTC Thermistor Series with Ni-Barrier
DATA SHEET
V - Series
B57xxx-V2xxx-xxx
Series in 0402
W
T
•
Part Dimensions
Dimensions in mm
L
k
7\SH
/
±
:
7
± PD[
N
±
Termination Ag/Ni/Sn
Dimensions in [mm]
Climatic Category (IEC 60068-1, JIS C 0010)
Lower category temperature (LCT)
Upper category temperature (UCT)
Power rating at 25°C
Dissipation factor (on PCB)
Thermal cooling time constant (on PCB)
Heat capacity
Weight of component
1)
Depends on mounting situation
P
25
G
th
T
th
C
th
55/125/56
-55°C
125°C
150mW
1)
approx. 2.5mW/K
1)
approx. 3.0s
1)
approx. 7.5mJ/K
1)
approx. 4.5mg
Series in 0603
W
T
•
Part Dimensions
Dimensions in mm
L
k
7\SH
/
:
7
± ± PD[
N
±
Termination Ag/Ni/Sn
Dimensions in [mm]
Climatic Category (IEC 60068-1, JIS C 0010)
Lower category temperature (LCT)
Upper category temperature (UCT)
Power rating at 25°C
Dissipation factor (on PCB)
Thermal cooling time constant (on PCB)
Heat capacity
Weight of component
1)
Depends on mounting situation
P
25
G
th
T
th
C
th
55/125/56
-55°C
125°C
180mW
1)
approx. 3.0 mW/K
1)
approx. 4.0 s
1)
approx. 12 mJ/K
1)
approx. 6 mg
KB VS PM
Revision 2001/d
Page 5 of 13
12.10.2001
