8W CURRENT DETECT CHIP RESISTORS
Features………………………………………………………….
Non inductive design.
Low TCR, typically less than 30ppm/°C.
Low profile surface mount package.
Excellent pulse/surge performance.
8W power rating.
Applications………………………………………………………
Current sense applications
Over current protection in Battery chargers.
Servo motor control circuits.
DC-DC, DC-AC and intelligent power modules.
Industrial PC modules (IPM) and precision measurement systems.
Current detection circuits in high-speed CPU peripherals.
Specification
Type
Dimensions (mm)
A
B
C
D
Marking
BCS8 (mm)
12.8+/-0.5
6.4max
2.5max
1.3
B
Marking is done by 3 digits resistance
value notation and tolerance code F (1%).
D
A
D
C
R001F
Specification
BCS8
0.5m, 1m, 2m, 3m, 4m, 5m , 10mΩ
+/-50ppm/°C
+/-1.0% (F), +/-5.0% (J)
8W
90A
126A
5nH
-55 C to 175
°C
-55 C to 175
°
C
Specifications
∆R+/-(0.5%+0.5mΩ)
∆R
+/-(0.5%+0.5mΩ)
∆R
+/-(1.0%+0.5mΩ)
∆R
+/-(0.5%+0.5mΩ)
∆R
+/-(0.5%+0.5mΩ)
∆R
+/-(0.25%+0.5mΩ)
90%/terminal surface
∆R
+/-(0.5%+0.1mΩ)
∆R
+/-(0.5%+0.1mΩ)
Remarks
Measured +/- 30ppm/
°C
Attached to70 micron PCB
At 1m
Ω
2.5 seconds one time
Resistance values
TCR
Tolerance
Power Rating
Current Rating
Maximum Current
Series Inductance
Operating Temp.
Storage Temp.
Conditions
maximum current, 2.5seconds.
-55C, 24hours
+175C, 1000hours
-55C to +125C, 20min. interval, 5min. 5cycles
10-2000Hz, 1.5mm/20gr, 2hours
260°C+/-5°C, 10+/-1 seconds.
85°C, 85%RH, dc0.1W, 1000 hours
25°C, dc rated power, 90min ON, 30min OFF, 1000hours
Short Time Overload
Low Temperature Storage
High Temperature Storage
Heat Shock
Vibration
Soldering Heat
Solderability
Humidity
Load Life
Specifications subject to change without notice.
1
BCS 8
8W 5025 CURRENT DETECT RESISTOR
Frequency Characteristics
Impedance(Ω)
0.050
0.010
0.005
Temperature Rise
Temperature (°C) at hot spot.
250
200
150
100
50
BCS 8 R001 F
0.001
10k
100k
1M
Frequency(Hz)
10M
0
0
2
4
6
8
Applied Power (W)
10
12
Dotted line: typical measurement
∆R/R
(ppm)
TCR Curves
Recommended Foot Print (mm)
7.4
+4000
Slope of +30ppm/°C
+2000
0
-2000
Slope of –30ppm/°C
2.5
2.5
-4000
//
-50
9.0
0
25
50
75
Resistor Temperature (°C)
100
125
Soldering Recommendation
Due to the enhanced heat dissipation properties of the BCS8, the temperature profile during reflow
soldering will need to be increased by: 10 to 20°C.
Custom designs
Alternative widths and lengths are available, please contact factory for details.
FR4 Thermal PCB Characterisation
X MM
Pad Dimensions (x,y mm)
60, 45
50, 45
40, 40
30, 30
20, 20
10, 10
P
90
°C,
70um
(W)
P
90
°C,
35um
(W)
5.8
5.4
4.2
3.5
2.9
2.4
4.6
4.3
4.1
2.8
2.7
2.5
Y
M
M
BCS 8
Notes: Characterisation carried out using 70µm and 35µm PCB copper pad weights, with the temperature of 90°C used as a
maximum reference on the PCB.
2
BCS 8
8W 5025 CURRENT DETECT RESISTOR
Taping specification (BCS8)
1.75
13.30
11.50
.
24.0+/-0.3
1.50
0.30+/-0.05
D
t
C
B
2.00
4.00
4.80
Dia. 1.50+0.1-0
Dia.1.50+0.1-0
A X
D
P/N
BCS8 R001F
BCS8 R002F
BCS8 R003F
BCS8 R003F
BCS8 R004F
BCS8 R005F
A/NA
A
A
A
A
NA
A
A
12.8
12.8
12.8
12.8
12.8
12.8
B
4.0
4.0
2.7
4.5
5.3
4.4
C
1.14
0.64
0.64
0.44
0.34
0.34
D
1.4
1.4
1.4
1.4
1.4
1.4
X
10.0
10.0
10.0
10.0
10.0
10.0
t
1.0
0.5
0.5
0.3
0.2
0.2
Note : Above dimensions are approximate.
Resistor
Contact Probe
Current
Voltage
Resistance testing the BCS resistors is done at
the side positions of resistor terminals (see
figure) using a 4 - port measuring system.
For a stated resistance tolerance of +/-1.0%, the
measured values should be within the +/-0.8%
factory tested values.
When surface mount resistor is attached on
circuit board, small resistance changes will
occur, Custom designs are available, please call
the factory.
Ohm Meter
Ordering Information
BCS
Model
Power Rating
8
R001
F
8 : 8W
Resistance Code
R001: 0.001Ω
Tolerance
J = 5% Tol
F = 1% Tol
3
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