lo-ohm 0.5%, 1%, 2%, 5% tolerance thick film
current sense resistor
EU
features
•
RuO
2
thick film resistor element
•
Marking: 1H: no marking on black protective coating
1E~W3A: three or four digit marking on indigo
protective coating; 1E, 1J: No marking
•
Products with lead-free terminations meet EU RoHS
requirements. EU RoHS regulation is not intended for
Pb-glass contained in electrode, resistor element and glass.
•
AEC-Q200 Qualified: 0402 (1E), 0603 (1J), 0805 (2A),
1206 (2B), 1210 (2E), 2010 (2H/W2H), 2512 (3A/W3A)
dimensions and construction
c
L
c
Type
(Inch Size Code)
L
Dimensions
inches
(mm)
W
c
d
t
1H
(0201)
1E
(0402)
Solder
Plating
Ni
Plating
.024±.001 .012±.001 .004±.002 .006±.002 .009±.001
(0.6±0.03) (0.3±0.03) (0.1±0.05) (0.15±0.05) (0.23±0.03)
.039
(1.0
+.004
-.002
+0.1
)
-0.05
.02
(0.5
W
+.004
-.002
+0.1
)
-0.05
+.006
-.004
+0.15
-0.1
)
.01±.004
(0.25±0.1)
.01±.004 .014±.002
(0.25±0.1) (0.35±0.05)
t
d
Protective
Coating
Resistive Inner
Film
Electrode
1J
(0603)
2A
(0805)
2B
(1206)
2E
(1210)
2H
(2010)
W2H
(2010)
3A
(2512)
W3A
(2512)
.063±.008
(1.6±0.2)
.031
(0.8
.014±.004 .014±.004 .018±.004
(0.35±0.1) (0.35±0.1) (0.45±0.1)
.012
(0.3
+.008
-.004
+0.2
)
-0.1
.079±.008 .049±.004 .016±.008
(2.0±0.2) (1.25±0.1) (0.4±0.2)
.063±.008
.126±.008
(1.6±0.2)
(3.2±0.2)
.102±.008
(2.6±0.2)
.197±.008 .098±.008
(5.0±0.2)
(2.5±0.2)
.02±.004
(0.5±0.1)
Ceramic
Substrate
.016
(0.4
+.008
-.004
+0.2
)
-0.1
.02±.012
(0.5±0.3)
.026±.006 .024±.004
(0.65±0.15) (0.6±0.1)
.016
(0.4
+.008
-.004
+0.2
)
-0.1
.248±.008 .122±.008
(6.3±0.2)
(3.1±0.2)
.026±.006
(0.65±0.15)
ordering information
New Part #
SR73
Type
2B
Size
1H
1E
1J
2A
2B
2E
W2H
W3A
2H
3A
T
Termination
Material
T: Sn
L: SnPb (1E,
1J, 2A, 2B, 2E,
2H, 3A)
G: Au (1J, 2A,
2B: 0.1Ω - 10Ω -
contact factory)
TD
Packaging
TCM: 0201 only:
7" 2mm pitch pressed paper
TPL:0402 only: 2mm pitch punch paper
TP: 0402, 0603, 0805: 7" 2mm pitch
punch paper
TD: 0603, 0805, 1206, 1210:
7" 4mm pitch punched paper
TDD: 0603, 0805, 1206, 1210:
10" paper tape
TE: 0805, 1206, 1210, 2010 & 2512:
7" embossed plastic
TED: 0805, 1206, 1210, 2010 & 2512:
10" embossed plastic
For further information on packaging,
please refer to Appendix A
1R00
Nominal
Resistance
±2%, ±5%: 2 significant figures
+ 1 multiplier “R” indicates
decimal on value <10Ω
±1%: 3 significant figures
+ 1 multiplier “R” indicates
decimal on value <100Ω
All values less than 0.1Ω
(100mΩ) are expressed in
mΩ with “L” as decimal
Example: 20mΩ = 20L
(3-digit)
F
Tolerance
D: ±0.5%
F: ±1%
G: ±2%
J: ±5%
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
12/10/13
KOA Speer Electronics, Inc.
• 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
37
resistors
SR73
SR73
lo-ohm 0.5%, 1%, 2%, 5% tolerance thick film
current sense resistor
applications and ratings
Part
Designation*
SR731H
(0201)
SR731E
(0402)
SR731J
(0603)
SR732A
(0805)
SR732B
(1206)
SR732E
(1210)
SR732H/W2H
2
(2010)
SR733A/W3A
(2512)
Power
Rating
@ 70°C
0.1W
1/8W (.125W)
1/6W (.166W
1
)
1/5W (.2W)
1/4W (.25W)
1/3W (.33W
1
)
1/3W (.33W)
1/2W (.5W
1
)
1/2W (.5W)
2/3W (.66W
1
)
3/4W (.75W)
1W
T.C.R.
(ppm/°C)
Max.
0 - ±500
0 - ±400
±200
±250
±300
±200
±100
±200
±500
±800
±100
±200
±500
±800
±100
±200
±500
±1000
±100
±200
±500
±800
±100
±200
±500
±800
Temperature Rise
(°C)
% Rated Power
resistors
100
80
60
1H
Resistance Range
E-24, E-96 E-24, E-96
(D±0.5%)
(F±1%)
—
—
—
—
—
0.15Ω - 10Ω
—
—
—
0.15Ω - 10Ω
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
1Ω - 10Ω**
0.51Ω - 10Ω**
0.2Ω - 0.47Ω**
0.1Ω - 0.18Ω**
0.1Ω - 10Ω
0.1Ω - 10Ω
—
—
—
0.1Ω - 10Ω
—
—
—
0.1Ω - 10Ω
—
—
—
0.1Ω - 10Ω
—
—
—
0.1Ω - 10Ω
—
—
—
E-24
(G±2%)
—
0.51Ω - 10Ω
0.2Ω - 0.47Ω
0.1Ω - 0.18Ω
0.1Ω - 10Ω
—
0.1Ω - 10Ω
—
—
—
0.1Ω - 10Ω
—
—
—
0.1Ω - 10Ω
—
—
—
0.1Ω - 10Ω
—
—
—
0.1Ω - 10Ω
—
—
E-24
(J±5%)
0.18Ω - 0.24Ω
0.27Ω - 10Ω
0.51Ω - 10Ω
0.2Ω - 0.47Ω
0.1Ω - 0.18Ω
0.1Ω - 10Ω
—
0.1Ω - 10Ω
0.051Ω - 0.091Ω
0.030Ω - 0.047Ω
—
0.1Ω - 10Ω
0.056Ω - 0.091Ω
0.030Ω - 0.051Ω
—
0.047Ω - 10Ω
0.036Ω - 0.043Ω
0.024Ω - 0.033Ω
—
0.1Ω - 10Ω
0.056Ω - 0.091Ω
0.033Ω - 0.051Ω
—
0.1Ω - 10Ω
0.056Ω - 0.091Ω
0.039Ω - 0.051Ω
Absolute
Maximum
Working
Voltage
1.0V
1.11V
1.41V
1.58V
1.81V
2.23V
2.73V
3.16V
Maximum
Overload
Voltage
(5 Secs. Max.)
2.5V
2.79V
3.53V
3.95V
4.54V
5.59V
6.84V
7.90V
Operating
Temperature
Range
-55°C to
+125°C
-55°C
to
+150°C
* Parentheses indicate EIA package size codes.
** 1H, 1E (F: ±1%) E-24 values only.
1
Please contact factory for limitation of Surface Mount Temperature Rise.
2
SR73W3AS (2010 size, 1 Watt) with limited Resistance Range - contact factory for details.
environmental applications
Derating Curve
Surface Temperature Rise
180
160
140
120
100
80
60
40
20
0
0
25
50
75
100
W2H (.75W)
2E (.66W)
2B (.5W)
2A (.33W)
2E (.5W)
2B (.33W)
2A (.25W)
1E (.16W)
1J (.2W)
1H (.1W)
1E (.125W)
W3A (1W)
1E, 1J,
2A, 2B, 2E,
2H, 3A,
W2H, W3A
40
20
0
-60 -40 -20
-55
For resistors operated at an
ambient temperature of 70°C
or above, a power rating shall
be derated in accordance with
the above derating curve.
Regarding the temperature rise,
the value of the temperature
varies per conditions and board
for use since the temperature is
measured under our measuring
conditions.
Measuring Point
0
80 100 120 140 160
70
125 150
Ambient Temperature
(°C)
20
40
60
Power Rating (%)
Performance Characteristics
Parameter
Resistance
T.C.R.
Overload (Short time)
Resistance to Solder Heat
Rapid Change of Temperature
Moisture Resistance
Endurance at 70°C
High Temperature Exposure
Requirement
∆
R ±(%+0.05Ω)
Limit
Typical
Within specified
—
tolerance
Within specified
—
T.C.R.
±2%
±0.5%
1H: ±3%,
1H: ±0.75%
1E~W3A: ±1% 1E~W3A: ±0.3%
±1%
±0.3%
1H: ±3%
±1%
1E~W3A: ±2%
1H: ±3%
±1%
1E~W3A: ±2%
±1%
±0.3%
Test Method
25°C
+25°C/-55°C and +25°C/+125°C
Rated Voltage x 2.5 for 5 seconds
260°C ± 5°C, 10 seconds ± 1 second
-40°C (30 minutes), +125°C (30 minutes), 100 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
1H: +125°C, 1000 hours; 1E, 1J, 2A, 2B, 2E, W2H, W3A:+150°C, 1000 hours
12/10/13
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
38
KOA Speer Electronics, Inc.
• 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
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