MERITEK CSR

 CSR Series
Current Sensing Chip Resistor
MERITEK
Feature and Applications












Low TCR of ±100 PPM/°C
Resistance values from 1m to 1 ohm
3 Watts power rating in 1 Watt size, 1225 package
High purity alumina substrate for high power dissipation Long side terminations with higher power rating
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
PART NUMBERING SYSTEM
CSR
0603
G
U
1001 C
Current Sensing Chip Resistors
SIZE
0201 0402 0603 0805 1206 1210
2010 2512 1225 3720 7520
TCR (PPM/°C)
E
F
G
H
J
K
R
±100
±200
±300
±400
±600
±150 ±1000
Power Rating
S
A
T
Q
U
V
W
2W
1.5W
1W
3/4W
1/2W
1/4W
1/8W
Resistance Tolerance
Code
F
Value
±1%
Derating Curve R100
0.1Ω
1R00
1Ω
G
±2%
J
±5%
100
Power ratio(%)
Resistance Value
R010
0.01Ω
80
60
40
20
0
0
20
40
60
80
100
120
140
160
180
Ambient Temperature(℃)
Rev. 7
Current Sensing Chip Resistor
CSR Series
MERITEK
Construction
L
D1 w




T
 Alumina Substrate

 Bottom Electrode (Ag) 
 Top Electrode (Ag-Pd) 
Edge Electrode (NiCr)
Barrier Layer (Ni)
External Electrode (Sn)
 Resistor Layer (Ag/Pd)
 Primary Overcoat (Glass)
 Secondary Overcoat (Epoxy)
   
D2
Unit: mm
Weight
(g)
Type
Size
(Inch)
L
W
T
D1
D2
CSR0201
0201
0.60±0.03
0.30±0.03
0.23±0.05
0.12±0.05
0.15±0.05
0.18
CSR0402
0402
1.00±0.05
0.50±0.05
0.32±0.10
0.25±0.10
0.20±0.10
0.7
CSR0603
0603
1.60±0.10
0.80±0.10
0.45±0.10
0.30±0.20
0.30±0.20
1.99
CSR0805
0805
2.00±0.10
1.25±0.10
0.55±0.10
0.30±0.20
0.40±0.25
5.3
CSR1206
1206
3.10±0.10
1.55±0.10
0.55±0.10
0.50±0.30
0.40±0.25
8.82
CSR1210
1210
3.10±0.10
2.60±0.15
0.55±0.10
0.50±0.30
0.50±0.25
15.5
CSR2010
2010
5.00±0.10
2.50±0.15
0.60±0.15
0.60±0.30
0.50±0.25
27.03
CSR2512
2512
6.35±0.10
3.10±0.15
0.60±0.10
0.60±0.30
0.55±0.25
43.08
CSR2512
(2W)
CSR2512
(2W)
2512
6.35±0.20
3.15±0.15
0.74±0.10 0.60±0.30 0.55±0.25 53.08
(100 - 1000mΩ)
6.35±0.20
3.15±0.15
0.74±0.10 0.60±0.30 2.10±0.10 53.08
CSR1225
1225
3.10±0.15
6.30±0.15
0.90±0.15
0.60±0.30
0.55±0.25
64.88
CSR3720
3720
2.00±0.20
3.75±0.20
0.60±0.10
0.40±0.20
0.40±0.20
19.96
CSR7520
7520
2.00±0.20
7.50±0.30
0.60±0.10
0.40±0.20
0.40±0.20
35.71
(10 - 99mΩ)
2512
(1000pcs)
Rev. 7
CSR Series
Current Sensing Chip Resistor
MERITEK
Standard Electrical Specifications
Item
Type
Power Rating
at 70°C
CSR0201
1/20W
CSR0402
1/16W
CSR0603
1/10W
CSR0805
1/8W
CSR1206
CSR1210
CSR2010
CSR2512
1/4W
1/2W
3/4W
1W
CSR1225
3W
CSR3720
1W
CSR7520
2W
Operating Temp.
Range
-55 ~ +155C
Resistance Range
(mΩ)
±1%
±2%
±5%
100 - 149
150 - 500
501 - 1000
50 - 100
101 - 500
501 - 1000
20 - 50
51 - 100
101 - 500
501 - 1000
20 - 50
51 - 100
101 - 500
501 - 1000
10 - 20
21 - 50
51 - 99
100 - 1000
3-5
6 - 20
21 - 30
31 - 250
251 - 8000
10 - 19
20 - 500
－
1-4
5 - 10
11 - 350
TCR
(PPM/°C)
±1000
±600
±300
±400
±300
±200
±600
±400
±300
±200
±600
±400
±300
±200
±600
±400
±300
±200
±300
±200
±150
±100
±200
±300
±150
±300
±200
±150
High Power Rating Electrical Specifications Item Power Rating
at 70°C
Operating Temp.
Range
Type
CSR0402
1/8W
CSR0603
1/8W
CSR0805
1/4W
CSR1206
1/2W
CSR1210
3/4W
CSR2010
1W
CSR2512
1.5W
CSR2512
2W
Resistance Range
(mΩ)
±1%
±2%
±5%
TCR
(PPM/°C)
51 - 100
101 - 500
501 - 1000
±400
±300
±200
10 - 20
21 - 50
51 - 99
100 - 1000
±600
±400
±300
±200
-55 ~ +155C
Rev. 7
CSR Series
Current Sensing Chip Resistor
MERITEK
Low TCR Electrical Specifications
Item
Power Rating
at 70°C
Operating Temp.
Range
Type
Resistance Range
(mΩ)
±1%
±2%
±5%
TCR
(PPM/°C)
CSR0805
1/8W
100 - 1000
±100
CSR1206
1/4W
100 - 1000
±100
CSR1210
1/2W
75 - 1000
±100
CSR2010
3/4W
50 - 1000
±100
20 - 1000
±100
-55 ~ +155C
CSR2512
1W
CSR2512
2W
50 - 1000
±100
CSR3720
1W
100 - 500
±100
CSR7520
2W
50 - 350
±100
Operating Voltage=√(P*R) ; Overload Voltage=2.5*√(P*R) ; Operating Current=√(P/R)
Soldering Condition IR Reflow Soldering
Wave Soldering (Flow Soldering)
(1)Time of IR reflow soldering at maximum temperature point 260C：10s
(2)Time of wave soldering at maximum temperature point 260C：10s
(3)Time of soldering iron at maximum temperature point 410C：5s
Rev. 7
Current Sensing Chip Resistor
CSR Series
MERITEK
Environmental Characteristics
Item
Requirement
Test Method
JIS C 5201-1 4.8
Temperature Coefficient of Resistance
As Spec.
(T.C.R.)
IEC 60115-1 4.8
-55C~+125C, 25C is the reference temperature
(0.5%+0.05Ω)
Short Time Overload
(1.0%+0.05Ω)
for high power rating
JIS C 5201-1 4.13
IEC 60115-1 4.13
RCWV*2.5 or Max. overload voltage for 5 seconds
≧10G
JIS C 5201-1 4.6
IEC 60115-1 4.6
Max. overload voltage for 1 minute
Endurance
(1.0%+0.05Ω)
JIS C 5201-1 4.25
IEC 60115-1 4.25.1
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%+0.05Ω)
JIS C 5201-1 4.24
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%+0.05Ω)
JIS C 5201-1 4.23.2
IEC 60115-1 2.23.2
at +155C for 1000 hrs
Insulation Resistance
JIS C 5201‐1 4.33 Bending Strength
As Spec.
IEC 60115-1 4.33
Bending once for 5 seconds with 3mm
2010, 2512 sizes: 2 mm
Solderability
95% min. coverage
JIS C 5201-1 4.17
IEC 60115-1 4.17
2455C for 3 seconds
Resistance to Soldering Heat
(0.5%+0.05Ω)
JIS C 5201-1 4.18
IEC 60115-1 4.18
2605C for 10 seconds
Voltage Proof
No breakdown or flashover
JIS C 5201-1 4.7
IEC 60115-1 4.7
1.42 times RCWV (RMS) for 1 minute
Leaching
Rapid Change of Temperature
Individual leaching area ≦5%
Total leaching area ≦10%
(0.5%+0.05Ω)
JIS C 5201-1 4.18
IEC 60068-2-58 8.2.1
2605C for 30 seconds
JIS C 5201-1 4.19
IEC 60115-1 4.19
-55C to +155C, 5 cycles
Storage Temperature: 25±3°C; Humidity < 80%RH
Rev. 7
CSR Series
Current Sensing Chip Resistor
MERITEK
Packaging Packaging Quantity & Reel Specifications
Unit :mm
Emboss
Plastic
Tape (EA)
Type
ψA
ΦB
ψC
W
T
Paper
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
T o p T ap e
B o tto m T ap e
ψ D0
E
A
F
B
T
P ap er T ap e
P1
R esisto r
P2
P0
W
d irectio n o f u n reelin g
Unit: mm Type
A
B
W
E
F
P0
P1
P2
ΦD0
T
CSR0201
0.38±0.05
0.68±0.05
8.0±0.20
1.75±0.10
3.50±0.05
4.00±0.10
2.00±0.05
2.00±0.05
1.50+0.1,-0
0.42±0.20
CSR0402
0.65±0.10
1.15±0.10
8.0±0.20
1.75±0.10
3.50±0.05
4.00±0.10
2.00±0.05
2.00±0.05
1.50+0.1,-0
0.45±0.10
CSR0603
1.10±0.10
1.90±0.10
8.0±0.20
1.75±0.10
3.50±0.05
4.00±0.10
4.00±0.05
2.00±0.05
1.50+0.1,-0
0.70±0.10
CSR0805
1.60±0.10
2.40±0.20
8.0±0.20
1.75±0.10
3.50±0.05
4.00±0.10
4.00±0.05
2.00±0.05
1.50+0.1,-0
0.85±0.10
CSR1206
1.90±0.10
3.50±0.20
8.0±0.20
1.75±0.10
3.50±0.05
4.00±0.10
4.00±0.05
2.00±0.05
1.50+0.1,-0
0.85±0.10
CSR1210
2.90±0.10
3.50±0.20
8.0±0.20
1.75±0.10
3.50±0.05
4.00±0.10
4.00±0.05
2.00±0.05
1.50+0.1,-0
0.85±0.10
Rev. 7
CSR Series
Current Sensing Chip Resistor
MERITEK
Emboss Plastic Tape Specifications
Top Tape
ψ D0
E
A
F
B
W
ψ D1 1.4Min.
T
P1
Resistor
P2
P0
direction of unreeling
Emboss Tape
Type
A
B
W
E
F
P0
P1
P2
ψD0
T
CSR2010
2.80±0.10
5.50±0.10
12.0±0.30
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
3.50±0.10
6.70±0.10
12.0±0.30
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
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±0.10
5.5±0.05
4.00 ±0.05
4.00±0.10
2.00±0.05
1.50+0.10
1.20 ±0.20
CSR7520
2.50±0.20
8.30±0.20
16.0±0.30
1.75±0.10
7.8±0.05
4.00±0.05
4.00±0.10
2.00±0.05
1.50+0.10
1.20 ±0.20
CSR2512
(2W)
Marking for 0603 Type
Code
1R0
1.000Ω
R10
0.100Ω
R01
0.010Ω
101
0.101Ω
035
0.035Ω
Recommend Land Pattern
C B A Pad Layout (Except For CSR2512: High Power Rating Series)
Unit：mm
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
A
B
C
CSR2512
10~99 mΩ
4.9
1.6
3.1±0.2
CSR2512
100~1000mΩ
1.0
3.55
3.1±0.2
Rev. 7