SR73
lo-ohm 0.5%, 1%, 2%, 5% tolerance thick film
current sense resistor
resistors
EU
features
•
Marking: 1H: no marking on black
protective coating
1E, 1J: No marking on indigo protective coating.
2A~W3A: three or four digit marking on indigo
protective coating.
•
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
(Inch Size Code)
1H
(0201)
Type
W
Solder
Plating
t
d
Protective
Coating
Resistive Inner
Film
Electrode
Ni
Plating
1E
(0402)
1J
(0603)
2A
(0805)
2B
(1206)
.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
L
Dimensions
inches
(mm)
W
c
d
+.004
-.002
+0.1
)
-0.05
+.006
-.004
+0.15
)
-0.1
t
.02
(0.5
.01±.004
(0.25±0.1)
.01±.004 .014±.002
(0.25±0.1) (0.35±0.05)
.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
2E
(1210)
.016
(0.4
2H
(2010)
W2H
(2010)
W3A
(2512)
TD
+.008
-.004
+0.2
)
-0.1
3A
(2512)
.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)
1R00
F
Tolerance
D: ±0.5%
F: ±1%
G: ±2%
J: ±5%
New Part #
ordering information
SR73
Type
2B
Size
1H
1E
1J
2A
2B
2E
W2H
W3A
2H
3A
Termination
Material
T: Sn
L: SnPb (1E,
1J, 2A, 2B, 2E,
2H, 3A)
G: Au (1J, 2A,
2B: 0.1Ω - 10Ω -
contact factory)
T
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
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)
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
48
KOA Speer Electronics, Inc.
• 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
12/16/14
lo-ohm 0.5%, 1%, 2%, 5% tolerance thick film
current sense resistor
applications and ratings
Part
Designation*
SR731H
(0201)
SR731E
(0402)
SR731J
(0603)
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
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
—
—
—
Resistance Range
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
—
—
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
E-24
(J±5%)
Absolute Maximum
Rated
Operating
Maximum Overload
Terminal
Temp.
Working
Voltage
Part Temp. Range
Voltage
(5 Secs. Max.)
-55°C to
1.0V
2.5V
—
+125°C
1.11V
1.41V
1.58V
1.81V
2.23V
2.73V
3.16V
2.79V
3.53V
3.95V
4.54V
5.59V
6.84V
7.90V
-55°C
to
+150°C
SR732A
(0805)
SR732E
(1210)
SR732B
(1206)
125°C
SR732H/W2H
2
(2010)
SR733A/W3A
(2512)
* Parentheses indicate EIA package size codes.
** 1H, 1E (F: ±1%) E-24 values only.
1
Please refer to the “Higher Power Ratings” statement in the beginning of the catalog. Contact KOA prior to usage.
2
SR73W3AS (2010 size, 1 Watt) with limited Resistance Range - contact factory for details.
Rated ambient temperature: +70°C
Rated voltage =
√Power
rating x resistance value or max. working voltage, whichever is lower
environmental applications
Derating Curve
100
80
% Rated Power
60
1H
1E, 1J,
2A, 2B, 2E,
2H, 3A,
W2H, W3A
100
80
% Rated Power
60
40
20
1E, 1J, 2A, 2B, 2E,
2H/W2H, 3A/W3A
40
20
0
-60 -40 -20
-55
0
80 100 120 140 160
70
125 150
Ambient Temperature
(°C)
20
40
60
0
-60 -40 -20
-55
0
20
40
60
For resistors operated at an ambient temperature of 70°C or above,
a power rating shall be derated in accordance with the derating curve.
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
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
Requirement
∆
R ±(%+0.005Ω)
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%
For resistors operated at a terminal part temperature of described for each size
or above, a power rating shall be derated in accordance with the derating curve.
Please refer to “Introduction of the derating curve based on the terminal part
temperature” on the beginning of our catalog before use.
Terminal Part Temperature
(°C)
80 100 120 140 160
125 150
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, 2H/W2H, 3A/W3A:+150°C, 1000 hours
12/05/14
KOA Speer Electronics, Inc.
• 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
49
resistors
SR73
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