SR73
lo-ohm 0.5%, 1%, 2%, 5% tolerance thick film
current sense resistor
EU
features
•
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)
Type
(Inch Size Code)
resistors
L
.024±.001
(0.6±0.03)
.039
(1.0
+.004
-.002
+0.1
)
-0.05
Dimensions
inches
(mm)
W
c
d
.012±.001
(0.3±0.03)
.02
(0.5
+.004
-.002
+0.1
)
-0.05
+.006
-.004
+0.15
)
-0.1
t
.009±.001
(0.23±0.03)
.014±.002
(0.35±0.05)
.018±.004
(0.45±0.1)
.02±.004
(0.5±0.1)
1H (0201)
.004±.002
(0.1±0.05)
.01±.004
(0.25±0.1)
.014±.004
(0.35±0.1)
.016±.008
(0.4±0.2)
.006±.002
(0.15±0.05)
.01±.004
(0.25±0.1)
.014±.004
(0.35±0.1)
.012
(0.3
+.008
-.004
+0.2
)
-0.1
dimensions and construction
c
L
c
1E (0402)
1J (0603)
2A (0805)
.063±.008
(1.6±0.2)
.079±.008
(2.0±0.2)
.126±.008
(3.2±0.2)
.031
(0.8
W
Solder
Plating
t
d
Protective
Coating
Resistive Inner
Film
Electrode
Ni
Plating
.049±.004
(1.25±0.1)
.063±.008
(1.6±0.2)
.102±.008
(2.6±0.2)
.098±.008
(2.5±0.2)
2B (1206)
2E (1210)
2H (2010)
W2H (2010)
3A (2512)
W3A (2512)
.016
(0.4
.02±.012
(0.5±0.3)
+.008
-.004
+0.2
)
-0.1
.197±.008
(5.0±0.2)
.026±.006
(0.65±0.15)
.016
(0.4
+.008
-.004
+0.2
)
-0.1
.024±.004
(0.6±0.1)
Ceramic
Substrate
.248±.008
(6.3±0.2)
.122±.008
(3.1±0.2)
.026±.006
(0.65±0.15)
ordering information
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
TC: 0201 only: 7" 2mm pitch pressed
paper (TC: 10,000 pcs/reel,
TCM: 15,000 pcs/reel)
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%
applications and ratings
Part
Designation*
SR731H
(0201)
SR731E
(0402)
SR731J
(0603)
Power
Rating
@ 70°C
0.1W
1/6W (.166W)
1/5W (.2W)
New
1/4W (.25W)
Rated
Ambient
Temp.
70°C
70°C
70°C
70°C
Rated
Terminal
Part Temp.
—
125°C
125°C
125°C
T.C.R.
(ppm/°C)
Max.
0 - ±400
0 - ±500
±200
±300
±500
±200
±200
Resistance Range
E-24, E-96
(D±0.5%)
—
—
—
—
—
—
E-24, E-96
(F±1%)
1Ω - 10Ω**
—
0.51Ω - 10Ω**
0.2Ω - 0.47Ω**
0.1Ω - 0.18Ω**
1.02Ω - 10Ω
0.1Ω - 1Ω
E-24
(G±2%)
—
0.51Ω - 10Ω
0.2Ω - 0.47Ω
0.1Ω - 0.18Ω
1.1Ω - 10Ω
0.1Ω - 1Ω
E-24
(J±5%)
0.27Ω - 10Ω
0.18Ω - 0.24Ω
0.51Ω - 10Ω
0.2Ω - 0.47Ω
0.1Ω - 0.18Ω
1.1Ω - 10Ω
0.1Ω - 1Ω
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
11/08/17
70
KOA Speer Electronics, Inc.
• 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
SR73
lo-ohm 0.5%, 1%, 2%, 5% tolerance thick film
current sense resistor
applications and ratings
(continued)
Part
Designation*
Power
Rating
@ 70°C
1/3W (.33W)
SR732A
(0805)
1/2W (.5W )
1
Rated
Ambient
Temp.
70°C
––
Rated
Terminal
Part Temp.
125°C
105°C
125°C
110°C
125°C
110°C
125°C
125°C
T.C.R.
(ppm/°C)
Max.
±100
±200
±500
±800
±100
±200
±500
±800
±100
±200
±500
±800
±100
±200
±500
±800
±100
±200
±500
±1000
±100
±200
±500
±800
±100
±200
±500
±800
±100
±200
±500
±800
Resistance Range
E-24, E-96
(D±0.5%)
0.15Ω -
—
—
—
0.15Ω -
—
—
—
0.15Ω -
—
—
—
0.15Ω -
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
10Ω
E-24, E-96
(F±1%)
0.1Ω - 10Ω
—
—
—
0.1Ω - 10Ω
—
—
—
0.1Ω - 10Ω
—
—
—
0.1Ω - 10Ω
—
—
—
0.1Ω - 10Ω
—
—
—
0.1Ω - 10Ω
—
—
—
0.1Ω - 10Ω
—
—
—
0.1Ω - 10Ω
—
—
—
E-24
(G±2%)
—
0.1Ω - 10Ω
—
—
—
0.1Ω - 10Ω
—
—
—
0.1Ω - 10Ω
—
—
—
0.1Ω - 10Ω
—
—
—
0.1Ω - 10Ω
—
—
—
0.1Ω - 10Ω
—
—
—
0.1Ω - 10Ω
—
—
—
0.1Ω - 10Ω
—
—
E-24
(J±5%)
—
0.1Ω - 10Ω
0.051Ω - 0.091Ω
0.030Ω - 0.047Ω
—
0.1Ω - 10Ω
0.051Ω - 0.091Ω
0.030Ω - 0.047Ω
—
0.1Ω - 10Ω
0.056Ω - 0.091Ω
0.030Ω - 0.051Ω
—
0.1Ω - 10Ω
0.056Ω - 0.091Ω
0.030Ω - 0.051Ω
—
0.047Ω - 10Ω
0.036Ω - 0.043Ω
0.024Ω - 0.033Ω
—
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
10Ω
10Ω
1/3W (.33W)
SR732B
(1206)
1/2W (.5W )
1
70°C
––
70°C
––
10Ω
1/2W (.5W)
SR732E
(1210)
2/3W (.66W
1
)
SR732H/W2H
(2010)
SR733A/W3A
(2512)
3/4W (.75W)
1W
70°C
70°C
* Parentheses indicate EIA package size codes.
** 1H, 1E (F: ±1%) E-24 values only.
Operating Temp: -55C to +125°C (SR731H only), -55°C to +150°C
If any questions should arise whether to use the “Rated Ambient Temperature” or the “Rated Terminal Part Temperature,” please give priority to the “Rated Terminal
Part Temperature.” Prior to use and for more details refer to “Introduction of the derating curves on the terminal part temperature” in the beginning of the catalog.
1
Prior to use, refer to the “Higher Power Ratings” in the beginning of catalog. Rated voltage =
√Power
rating x resistance value or max. working voltage, whichever is lower
environmental applications
Derating Curve
1E, 1J
2A: 0.33W
2B: 0.33W
2E: 0.5W
W2H, W3A
SR73 2A (0.5W), SR73 2B (0.5W), SR73 2E (0.66W)
For resistors operated at an ambient temperature
of 70°C or above, a power rating shall be derated
in accordance with the derating curve.
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.
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 ±(%+0.005Ω)
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%
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
11/08/17
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
KOA Speer Electronics, Inc.
• 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
71
resistors
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