CSR
resistors
four-terminal current sense resistor
EU
features
•
•
•
•
•
Extremely low resistance and high precision tolerance
Low T.C.R. achieved (±50ppm/°C)
Flameproof UL94V0
Marking: Black body color with white marking
Products with lead-free terminations meet EU RoHS
and China RoHS requirements
dimensions and construction
Size
Code
CSR1
CSR2
L
.425±.02
(10.8±0.5)
.504±.02
(12.8±0.5)
W
.244±.012
(6.2±0.3)
.323±.012
(8.2±0.3)
t
.083±.008
(2.1±0.2)
.122±.008
(3.1±0.2)
a
.118±.012
(3.0±0.3)
.197±.012
(5.0±0.3)
Dimensions
inches
(mm)
b
c
d
.031±.008
(0.8±0.2)
.039±.008
(1.0±0.2)
.055±.02
(1.4±0.5)
.079±.02
(2.0±0.5)
.047±.02
(1.2±0.5)
.079±.02
(2.0±0.5)
e
.051±.012
(1.3±0.3)
.087±.012
(2.2±0.3)
f
.051±.012
(1.3±0.3)
.087±.012
(2.2±0.3)
g
.197±.004
(5.0±0.1)
.236±.004
(6.0±0.1)
h
.098±.004
(2.5±0.1)
.118±.004
(3.0±0.1)
Voltage
Electrode
Molded
Resistive
Resin
Element
L
W
Current
Electrode
e
t
c
f
b
d
g
h
c
a
ordering information
New Part #
CSR
Type
1
Power
Rating
1: 1W
2: 2W
T
Termination
Material
T: Sn
(Other termination
styles may be
available, please
contact factory
for options)
TE
Packaging
CSR1-
TED: 10" embossed tape
CSR2-
TEB: 13" embossed plastic
(CSR1: 10" 12mm pitch)
(all sizes -1,000 pieces/reel)
10L0
Nominal
Resistance
In milliohms:
3 significant figures
“L” indicates
decimal point
F
Tolerance
D: ±0.5%
F: ±1%
For further information on packaging,
please refer to Appendix A.
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
1/31/08
46
KOA Speer Electronics, Inc.
• 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
PMS 300 neg.
Black neg.
CSR
typical circuit schematic
Input
Detecting
Circuit
four-terminal current sense resistor
C
S
R
Voltage Terminal
(KELVIN terminal)
Current Terminal
Output
applications and ratings
Part
Designation
CSR1
CSR2
Power
Rating
1W
2W
T.C.R.
(ppm/°C)
Max.
±50
Resistance
Range
E-12
5mΩ - 50mΩ
Resistance
Tolerance
D: ±0.5%,F: ±1%
F: ±1%
Dielectric
Withstanding
Voltage
500V
Rated
Ambient
Temperature
+70°C
Operating
Temperature
Range
-55°C to +125°C
environmental applications
Derating Curve
100
80
% Rated Power
60
40
20
0
-60 -40
-55
Surface Temperature Rise
125
CSR2
Temperature Rise
(°C)
100
75
50
25
0
CSR1
-20
0
20
40
60
80
70
Ambient Temperature
(°C)
100 120
140
125
0
25
50
75
100
% Rated Power
Performance Characteristics
Parameter
Resistance
T.C.R.
Overload
Resistance to Solder Heat
Rapid Change of Temperature
Moisture Resistance
Endurance at 70°C
Low Temperature Operation
High Temperature Exposure
Requirement
∆R
Limit
Typical
Within regulated
—
tolerance
Within specified
—
T.C.R.
±1.0%
±1.0%
±1.0%
±1.0%
±1.0%
±0.5%
±2.0%
±0.5%
±1.0%
±0.5%
±0.5%
±0.25%
±0.5%
±0.25%
Test Method
25°C
+25°C/+125°C
Rated power x 5 for 5 seconds
260°C ± 5°C, 10 seconds ± 1 second
-55°C (30 minutes), +125°C (30 minutes), 500 cycles
40°C ± 2°C, 90 - 95% RH, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle
70°C ± 2°C, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle
-55°C, 1 hour
+125°C, 100 hours
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
12/16/08
KOA Speer Electronics, Inc.
• 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
47
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