1
CONSTRUCTION
FEATURES
－3 Watts power rating in 1 Watt size, 1225 package
－Low TCR of ±100 PPM/°C
－Resistance values from 1m to 1 ohm
－High purity alumina substrate for high power dissipation
－Long side terminations with higher power rating
APPLICATIONS
－Power Management Applications
－Switching Power Supply
－Over Current Protection in Audio Applications
－Voltage Regulation Module (VRM)
－DC-DC Converter, Battery Pack, Charger, Adaptor
－Automotive Engine Control
－Disk Driver
－Portable Devices (PDA, Cell Phone)
1 Alumina Substrate 4 Edge Electrode (NiCr) 7Resistor Layer (Ag/Pd)
2 Bottom Electrode (Ag) 5 Barrier Layer (Ni) 8Overcoat (Epoxy)
3 Top Electrode (Ag-Pd) 6 External Electrode (Sn) 9Marking
L
T
D1
D2
W
1 2
3
4
5
6
7
8
9
CSR Series MERITEK
Current Sensing Chip Resistor
Specifications are subject to change without notice. rev.6a
2
DIMENSIONS
Unit: mm
Type L W T D1 D2 Weight
(g)
(1000pcs)
CSR0201 0.58±0.05 0.29±0.05 0.23±0.05 0.12±0.05 0.15±0.05 0.18
CSR0402 1.00±0.05 0.50±0.05 0.32±0.10 0.25±0.10 0.20±0.10 0.7
CSR0603 1.60±0.10 0.80±0.10 0.45±0.10 0.30±0.20 0.30±0.20 1.99
CSR0805 2.00±0.15 1.25±0.15 0.55±0.10 0.30±0.20 0.40±0.25 5.3
CSR1206 3.05±0.15 1.55±0.15 0.55±0.10 0.50±0.30 0.40±0.25 8.82
CSR1210 3.00±0.15 2.50±0.15 0.55±0.10 0.50±0.30 0.50±0.25 15.5
CSR2010 5.00±0.20 2.45±0.15 0.60±0.15 0.60±0.30 0.50±0.25 27.03
CSR2512 6.35±0.20 3.15±0.15 0.60±0.10 0.60±0.30 0.55±0.25 43.08
CSR2512
10 - 99mΩ 6.35±0.20 3.15±0.15 0.74±0.10 0.60±0.30 0.55±0.25 43.08
CSR2512
100 - 1000mΩ 6.35±0.20 3.15±0.15 0.74±0.10 0.60±0.30 2.70±0.10 43.08
CSR1225 3.10±0.15 6.30±0.15 0.90±0.15 0.60±0.30 0.55±0.25 53.8
CSR3720 2.00±0.20 3.75±0.20 0.60±0.10 0.40±0.20 0.40±0.20 19.96
CSR7520 2.00±0.20 7.50±0.30 0.60±0.10 0.40±0.20 0.40±0.20 35.71
PART NUMBERING
DERATING CURVE
Product
Type Dimensions
(L×W)
TCR
(PPM/°C)
Resistance Resistance
To l e r a n c e
E: ±100
F: ±200
G: ±300
H: ±400
J: ±600
K: ±150
R: ±1000
F: ±1%
G: ±2%
J: ±5%
0201
0402
0603
0805
1206
1210
2010
2512
1225
3720
7520
0
20
40
60
80
100
0 20 40 60 80 100 120 140 160 180
Ambient Temperature(℃
)
Power ratio(%)
CSR 0603 G R100 F
CSR Series MERITEK
Current Sensing Chip Resistor
Power
Rating
U
R010: 0.01Ω
R100: 0.1Ω
1R00: 1Ω
: Standard
A: 1.5W
Q: 3/4W
S: 2W
T: 1 W
U: 1/2W
V: 1/4W
W: 1/8W
Power
Rating
3
STANDARD ELECTRICAL SPECIFICATIONS
Resistance Range
(mΩ)
Item
Type
Power Rating
at 70°C Operatin g Temp.
Range ±1% ±2% ±5%
TCR
(PPM/°C)
CSR0201 1/20W
100 - 149
150 - 500
501 - 1000
±1000
±600
±300
CSR0402 1/16W
50 - 100
101 - 500
501 - 1000
±400
±300
±200
CSR0603 1/10W
20 - 50
51 - 100
101 - 500
501 - 1000
±600
±400
±300
±200
CSR0805 1/8W
20 - 50
51 - 100
101 - 500
501 - 1000
±600
±400
±300
±200
CSR1206 1/4W
CSR1210 1/2W
CSR2010 3/4W
CSR2512 1W
10 - 20
21 - 50
51 - 500
501 - 1000
±600
±400
±300
±200
CSR1225 3W
3 - 5
6 - 20
21 - 30
31 - 250
251 - 8000
±300
±200
±150
±100
±200
CSR3720 1W 10 - 19
20 - 500
±300
±150
－ 1 - 4 ±300
CSR7520 2W
-55 ~ +155°C
5 - 10
11 - 350
±200
±150
HIGH POWER RATING ELECTRICAL SPECIFICATIONS
Resistance Range
(mΩ)
Item
Type Power Rating
at 70°C Operating Temp.
Range ±1% ±2% ±5%
TCR
(PPM/°C)
CSR0603 1/8W
CSR0805 1/4W
-55 ~ +155°C
51 - 100
101 - 500
501 - 1000
±400
±300
±200
CSR1206 1/2W
CSR1210 3/4W
CSR2010 1W
CSR2512 1.5W
CSR2512 2W
-55 ~ +155°C
10 - 20
21 - 50
51 - 500
501 - 1000
±600
±400
±300
±200
LOW TCR ELECTRICAL SPECIFICATIONS
Resistance Ran ge
(mΩ)
Item
Type Power Rating
at 70°C
Operating Temp.
Range ±1% ±2% ±5%
TCR
(PPM/°C)
CSR1206 1/4W 100 - 1000 ±100
CSR1210 1/2W 100 - 1000 ±100
CSR2010 3/4W 100 - 1000 ±100
CSR2512 1W 20 - 1000 ±100
CSR3720 1W 100 - 500 ±100
CSR7520 2W
-55 ~ +155°C
50 - 350 ±100
Operating Voltage=√(P*R) ; Overload Voltage=2.5*√(P*R) ; Operating Current=√(P/R)
CSR Series MERITEK
Current Sensing Chip Resistor
4
MARKING for 0603
Codes Type
1R0 1.000Ω
R10 0.100Ω
R01 0.010Ω
101 0.101Ω
035 0.035Ω
ENVIRONMENTAL CHARACTERISTICS
Item Requirement Test Method
Temperature Coefficient of Resistance
(T.C.R.) As Spec. +25/-55/+25/+125/+25°C
±0.5%
Short Time Overload
ΔR±1% for high power rating
RCWV*2.5 or Max. overload voltage for 5 seconds
Insulation Resistance >1000MΩ Apply 100VDC for 1 minute
Endurance ±1% 70±2°C, Max. working voltage for 1000 hrs with 1.5 hrs
“ON” and 0.5 hrs “OFF”
Damp Heat with Load ±0.5% 40±2°C, 90~95% R.H. Max. working voltage for 1000 hrs
with 1.5 hrs “ON” and 0.5 hrs “OFF”
Dry Heat ±0.5% at +155°C for 1000 hrs
Bending Strength As Spec. Bending amplitude 3mm for 10 seconds
Solderability 95% min. coverage 245±5°C for 3 seconds
Resistance to Soldering Heat ±0.5% 260±5°C for 10 seconds
Dielectric Withstand Voltage By Type Apply Max. Overload Voltage for l minute
Thermal Shock ±0.5% -55°C ~150°C, 100 cycles
Low Temperature Operation ±0.5% 1 hour, -65°C followed by 45 minutes of RCWV
Reference Standards: MIL-STD- 202, JIS-C 5201-1
Storage Temperature: 25±3°C; Humidity < 80%RH
CSR Series MERITEK
Current Sensing Chip Resistor
5
PACKAGING
Packaging Quantity & Reel Specifications
Unit: mm
Type ΦA ΦB ΦC W T Paper Tape
(EA)
Embossed
Plastic Tape
(EA)
CSR0201 178.0 ± 1.0 60.0 + 1.0 13.5 ± 0.7 9.5 ± 0.1 11.5 ± 1.0 10,000 -
CSR0402 178.0 ± 1.0 60.0 + 1.0 13.5 ± 0.7 9.5 ± 0.1 11.5 ± 1.0 10,000 -
CSR0603 178.0 ± 1.0 60.0 + 1.0 13.5 ± 0.7 9.5 ± 0.1 11.5 ± 1.0 5,000 -
CSR0805 178.0 ± 1.0 60.0 + 1.0 13.5 ± 0.7 9.5 ± 0.1 11.5 ± 1.0 5,000 -
CSR1206 178.0 ± 1.0 60.0 + 1.0 13.5 ± 0.7 9.5 ± 0.1 11.5 ± 1.0 5,000 -
CSR1210 178.0 ± 1.0 60.0 + 1.0 13.5 ± 0.7 9.5 ± 0.1 11.5 ± 1.0 5,000 -
CSR2010 178.0 ± 1.0 60.0 + 1.0 13.5 ± 0.7 13.5 ± 1.0 15.5 ± 1.0 - 4,000
CSR2512 178.0 ± 1.0 60.0 + 1.0 13.5 ± 0.7 13.5 ± 1.0 15.5 ± 1.0 - 4,000
CSR2512 (2W) 178.0 ± 1.0 60.0 + 1.0 13.5 ± 0.7 13.5 ± 1.0 15.5 ± 1.0 - 2,000
CSR1225 178.0 ± 1.0 60.0 + 1.0 13.5 ± 0.7 13.5 ± 1.0 15.5 ± 1.0 - 2,000
CSR3720 178.0 ± 1.0 60.0 + 1.0 13.5 ± 0.7 13.5 ± 1.0 15.5 ± 1.0 - 2,000
CSR7520 178.0 ± 1.0 60.0 + 1.0 13.5 ± 0.7 17.5 ± 1.0 19.5 ± 1.0 - 2,000
Paper Tape Specifications
Unit: mm
Type A B W E F P0 P1 P2 ΦD0 T
CSR0201 0.40±0.05 0.70±0.05 8.00±0.10 1.75±0.05 3.5±0.05 4.00±0.10 2.00±0.05 2.00±0.05 1.55±0.03 0.42±0.02
CSR0402 0.70±0.05 1.16±0.05 8.00±0.10 1.75±0.05 3.5±0.05 4.00±0.10 2.00±0.05 2.00±0.05 1.55±0.05 0.40±0.03
CSR0603 1.10±0.05 1.90±0.05 8.00±0.10 1.75±0.05 3.5±0.05 4.00±0.10 4.00±0.10 2.00±0.05 1.55±0.05 0.60±0.03
CSR0805 1.60±0.05 2.37±0.05 8.00±0.10 1.75±0.05 3.5±0.05 4.00±0.10 4.00±0.10 2.00±0.05 1.55±0.05 0.75±0.05
CSR1206 2.00±0.05 3.55±0.05 8.00±0.10 1.75±0.05 3.5±0.05 4.00±0.10 4.00±0.10 2.00±0.05 1.55±0.05 0.75±0.05
CSR1210 2.75±0.05 3.40±0.05 8.00±0.10 1.75±0.05 3.5±0.05 4.00±0.10 4.00±0.05 2.00±0.05 1.55±0.05 0.75±0.05
W
E
F
A
B
T Direction of unreeling
Resisto
r
To
p
Ta
p
e
Bottom Tape
Paper Tape
ψ
D
0
P0
P1P2
CSR Series MERITEK
Current Sensing Chip Resistor
6
Embossed Plastic Tape Specifications
Unit: mm
Type A B W E F P0 P1 P2 ΦD0 T
CSR2010 2.85±0.10 5.45±0.10 12.0±0.10 1.75±0.10 5.5±0.05 4.00±0.05 4.00±0.10 2.00±0.05 1.50+0.10 1.00±0.20
CSR2512 3.40±0.10 6.65±0.10 12.0±0.10 1.75±0.10 5.5±0.05 4.00±0.05 4.00±0.10 2.00±0.05 1.50+0.10 1.00±0.20
CSR2512
(2W) 3.38±0.10 6.68±0.10 12.0±0.30 1.75±0.10 5.5±0.10 4.00±0.10 4.00±0.10 2.00±0.05 1.55+0.05 1.45±0.20
CSR1225 3.38±0.10 6.68±0.10 12.0±0.30 1.75±0.10 5.5±0.10 4.00±0.10 4.00±0.10 2.00±0.05 1.55+0.05 1.45±0.20
CSR3720 2.50±0.20 4.45±0.20 12.0±0.30 1.75±0.01 5.5±0.05 4.00 ±0.05 4.00±0.10 2.00±0.05 1.50+0.10 1.50±0.10
CSR7520 2.50±0.20 8.30±0.20 16.0±0.30 1.75±0.01 7.8±0.05 4.00±0.05 4.00±0.10 2.00±0.05 1.50+0.10 1.50±0.10
RECOMMEND LAND PATTERN
Pad Layout (Except For CSR2512: High Power Rating Series)
U
Un
ni
it
t:
:
m
mm
m
Type A B C
CSR0201 0.25 0.30 0.40±0.2
CSR0402 0.50 0.50 0.60±0.2
CSR0603 0.80 1.00 0.90±0.2
CSR0805 1.00 1.00 1.35±0.2
CSR1206 2.00 1.15 1.70±0.2
CSR1210 2.00 1.15 2.50±0.2
CSR2010 3.60 1.40 2.50±0.2
CSR2512 4.90 1.60 3.10±0.2
CSR1225 2.00 2.00 6.40±0.2
CSR3720 1.00 1.80 3.90±0.2
CSR7520 1.00 1.80 7.60±0.2
Pad Layout (For CSR2512: High Power Rating Series)
Unit: mm
Type Resistance
Range A B C
CSR2512 10 - 99mΩ 4.9 1.6 3.1±0.2
CSR2512 100 - 1000mΩ1.0 3.55 3.1±0.2
A
B
C
W
E
F
ψ
D0
P0
A
B
T
ψ
D11.4Min.
Embossed Tape
Direction of unreelin
g
To
p
Ta
p
e
Resisto
r
P1P2
CSR Series MERITEK
Current Sensing Chip Resistor
