EBW Series
Manganin/NiCr Current Sense
The EBW Series are manufactured using electron
beam welding technology. This allows the joining of
different alloys with great accuracy and tolerance.
The EBW Series have heavy copper connectors,
excellent long term stability and low inductance.
These components can tolerate soldering tempera-
tures of 350C for 30 seconds or 250C for 10min.
These can be mounted using re-flow soldering or
welding on copper. The EBWA can handle a power
of 5W up to 100A at 0.5mΩ. The EBWB can handle
a constant power of 7W at 0.2mΩ and a continuous
load of 180A at 0.2mΩ.
Model
EBWA-M
EBWA-N
EBWB-M
EBWB-N
Power (W)
5
4
4
3
2.5
7
6
6
4
3.5
Resistance (mΩ)
0.5
1
2
3
4
0.2
0.5
1
2
3
c E r t i f i c at i o n S
BN ES ISO 9001:
2008
ISO/TS 16949:
2009
a p p l i c at i o n S
• Current sensors for hybrid power sources
• Frequency converters
• High current automotive applications.
S E r i E S S p E c i f i c at i o n S
Material
Manganin
Manganin
NiCr Alloy
NiCr Alloy
NiCr Alloy
Manganin
Manganin
NiCr Alloy
NiCr Alloy
NiCr Alloy
TCR (20°C - 150°C)
±75ppm/°C
±60ppm/°C
±100ppm/°C
±100ppm/°C
±100ppm/°C
±100ppm/°C
±100ppm/°C
±120ppm/°C
±120ppm/°C
±120ppm/°C
Weight (g)
0.4081
0.1994
0.2726
0.1832
0.1363
1.5138
0.5652
0.8573
0.4287
0.2858
charactEriSticS
Tolerance
±1(F), ±2(G), ±5(J)
TCR
20°C-150°C
Max. ±100ppm/°C (EBWA)
Max. ±120ppm/°C (EBWB)
Operating
-55°C to 170°C
Temperature
p E r f o r m a n c E d ata
Thermal Shock
-65°C, 25°C, 125°C, 25°C 25cycles
Short Time Overload
Rated Power X 5 for 5 secs.
Resistance to Soldering Heat
350°C 30 sec. or 250°C 10 min.
Moisture Resistance
90~98%RH,+25°C,+65°C,-10°C 10 cycles
High Temperature Exposure
140°C for 250 hours
Vibration High Frequency
15g 10 to 2000Hz 36 cycles
Inductance
Load Life
90 min “ON” 30 min “OFF” for 2000 hours
±0.1%
±0.2%
±0.2%
±0.2%
±0.2%
±0.2%
<3nH
±1.0%
Derating
85° (EBWA)
% Rated Power
100
80
60
40
20
0
0
170°
(EBWB) 65°
30
60
90
120 150
Resistor Surface Temp., C
180
4
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
EBW Series
Manganin/NiCr Current Sense
p u l S E E n E r g y / p o W E r f o r c o n t i n u o u S o p E r at i o n
10,000
1000
100
Pulse Energy (J)
10
1
0.1
0.01
0.0001
EBWB
EBWA
10,000
1,000
100
Power (W)
10
1
0.1
0.01
0.001
0.0001
100
EBWA:
Max. curve is only valid for the resistance value 0.5m. The
min. curve is only valid for the resistance value 4m. For other resis-
tance values the area in between the max. and the min. curve is valid
EBWB:
Max. curve is only valid for the resistance value 0.2m. The
min. curve is only valid for the resistance value 2m. For other resis-
tance values the area in between the max. and the min. curve is valid
0.001
0.01
0.1
Time (msec.)
1
10
dimEnSionS
(in. / mm)
L
+.008/-0"
+.2/-0mm
0.197" ±.008
5mm ±0.2
max. 1.2mm
trimming area
Land Pattern
Ohm Value
EBWA-M 0.5mΩ
1mΩ
2mΩ
3mΩ
4mΩ
L
0.413 / 10.5
0.413 / 10.5
0.598 / 15.2
0.598 / 15.2
W
0.197 / 5
0.197 / 5
0.295 / 7.5
0.295 / 7.5
Thickness "t"
0.035 / 0.88
0.017 / 0.43
EBWA-N
W
±.012"
±.3mm
0.020"
0.5mm
EBWB-N
EBWB-M 0.2mΩ
0.5mΩ
1mΩ
2mΩ
3mΩ
0.059 / 1.5
0.022 / 0.56
0.035 / 0.9
0.018 / 0.45
0.012 / 0.3
0.025 / 0.64
0.017 / 0.43
0.013 / 0.32
0.220"
5.6mm
0.344" / 8.75mm
(0.244" / 6.2mm)
0.630"
16mm
t
electron
beam
welding
Tape and Reel
EBWA
2.00mm ±.10 4.00mm ±.10
10 pitch cumulative
tolerance on tape ±0.2
Ø1.50mm +10/-0
1.75mm ±.10
7.50mm ±.10
16.00mm ±.30
Ø1.50mm +10/-0
EBWB
2.00mm ±.10 4.00mm ±.10
10 pitch cumulative
tolerance on tape ±0.2
1.75mm ±.10
11.50mm ±.10
11.00mm ±.10
15.70mm ±.10
0.30mm ±.10
24.00mm ±.30
12.00mm ±.10
8.00mm ±.10
Reel: ~12.95" (329mm)
Qty. per reel: EBWA: 3000pcs
EBWB: 2000pcs
2.10mm ±.10 8.00mm ±.10
5.50mm ±.10
2.10mm ±.10
o r d E r i n g i n f o r m at i o n
Standard Part Numbers
EBWA-MR0005FE
EBWA-MR0010FE
EBWA-NR0020FE
EBWA-NR0030FE
EBWA-NR0040FE
EBWB-MR0002FE
EBWB-MR0005FE
EBWB-NR0010FE
EBWB-NR0020FE
EBWB-NR0030FE
RoHS Compliant
EBWA-MR0020FET
Series
Electron
Beam Weld
Size
Alloy
Resistance
M = Maganin
N = NiCr
Tolerance Tape and reel
F = 1%
EBWA: 3000 pc/reel
G = 2%
EBWB: 2000 pc/reel
J = 5%
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
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