148 KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 10/26/18
SR73
lo-ohm 0.5%, 1%, 2%, 5% tolerance thick film
current sense resistor
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)
ordering information
D:±0.5%
F: ±1%
G:±2%
J: ±5%
T: Sn
L: SnPb (1E,
1J, 2A, 2B, 2E,
2H, 3A)
G: Au (1J, 2A, 2B:
0.1Ω - 10Ω -
contact factory)
±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)
1H
1E
1J
2A
2B
2E
W2H
W3A
2H
3A
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
SR73
Type Size Nominal
Resistance Tolerance
Termination
Material Packaging
2B TD 1R00 FT
dimensions and construction
Protective
Coating Inner
Electrode
Resistive
Film
Ceramic
Substrate
Solder
Plating
Ni
Plating
Lcc
W
t
d
Type L
.039 +.004
-.002
(1.0 +0.1 )
-0.05
.01±.004
(0.25±0.1)
.012 +.008
-.004
(0.3 +0.2)
-0.1
.016 +.008
-.004
(0.4 +0.2)
-0.1
.016 +.008
-.004
(0.4 +0.2)
-0.1
.014±.002
(0.35±0.05)
.018±.004
(0.45±0.1)
.014±.004
(0.35±0.1)
.02±.004
(0.5±0.1)
.024±.004
(0.6±0.1)
.01±.004
(0.25±0.1)
.014±.004
(0.35±0.1)
.016±.008
(0.4±0.2)
.02±.012
(0.5±0.3)
.009±.001
(0.23±0.03)
.006±.002
(0.15±0.05)
.026±.006
(0.65±0.15)
.026±.006
(0.65±0.15)
.004±.002
(0.1±0.05)
.063±.008
(1.6±0.2)
.102±.008
(2.6±0.2)
.098±.008
(2.5±0.2)
.126±.008
(3.2±0.2)
.049±.004
(1.25±0.1)
.031 +.006
-.004
(0.8 +0.15)
-0.1
.02 +.004
-.002
(0.5 +0.1 )
-0.05
.063±.008
(1.6±0.2)
.079±.008
(2.0±0.2)
.197±.008
(5.0±0.2)
.024±.001
(0.6±0.03)
1E (0402)
1J (0603)
2A (0805)
2B (1206)
.012±.001
(0.3±0.03)
1H (0201)
2H (2010)
W2H (2010)
.122±.008
(3.1±0.2)
.248±.008
(6.3±0.2)
3A (2512)
W3A (2512)
(Inch Size Code) Wcd t
Dimensions inches (mm)
2E (1210)
EU
E-24, E-96
(F±1%)** E-24
(G±2%) E-24
(J±5%)
Part
Designation*
Rated
Ambient
Temp.
Power
Rating
@ 70°C
applications and ratings
SR731E
(0402)
SR731J
(0603)
0.51Ω - 10Ω**
0.2Ω - 0.47Ω**
0.1Ω - 0.18Ω**
0.51Ω - 10Ω
0.2Ω - 0.47Ω
0.1Ω - 0.18Ω
1.02Ω - 10Ω1.1Ω - 10Ω1.1Ω - 10Ω
0.51Ω - 10Ω
0.2Ω - 0.47Ω
0.1Ω - 0.18Ω
±200
±300
1/6W (.166W)
1/5W (.2W) ±500
±200
Resistance RangeT.C.R.
(ppm/°C)
Max.
70°C
70°C
70°C
Rated
Terminal
Part Temp.
125°C
125°C
—
E-24, E-96
(D±0.5%)
—
—
—
—
0.1Ω - 1Ω0.1Ω - 1Ω0.1Ω - 1Ω
New 1/4W (.25W) ±200
70°C 125°C —
SR731H
(0201) —
1Ω - 10Ω** —0.27Ω - 10Ω
0.18Ω - 0.24Ω
0.1W 0 ~ +400
0 ~ +500 —
current
sense
SR73
lo-ohm 0.5%, 1%, 2%, 5% tolerance thick film
current sense resistor
* 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.
E-24, E-96
(F±1%)** E-24
(G±2%) E-24
(J±5%)
Part
Designation*
Rated
Ambient
Temp.
Power
Rating
@ 70°C
applications and ratings (continued)
SR732A
(0805)
1/3W (.33W)
1/2W (.5W1)
Resistance RangeT.C.R.
(ppm/°C)
Max.
70°C
––
––
––
70°C
70°C
70°C
70°C
Rated
Terminal
Part Temp.
125°C
125°C
110°C
125°C
110°C
125°C
105°C
125°C 0.1Ω - 10Ω—
±100 —
— 0.1Ω - 10Ω±200 0.1Ω - 10Ω
— —±500 0.051Ω - 0.091Ω
— —±800 0.030Ω - 0.047Ω
SR732B
(1206) 1/2W (.5W1)
1/3W (.33W) 0.1Ω - 10Ω—±100 —
— 0.1Ω - 10Ω±200 0.1Ω - 10Ω
——±500 0.056Ω - 0.091Ω
——±800 0.030Ω - 0.051Ω
SR732H/W2H
(2010) 3/4W (.75W) 0.1Ω - 10Ω—±100 —
— 0.1Ω - 10Ω±200 0.1Ω - 10Ω
——±500 0.056Ω - 0.091Ω
——±800 0.033Ω - 0.051Ω
SR733A/W3A
(2512) 1W 0.1Ω - 10Ω—±100 —
— 0.1Ω - 10Ω±200 0.1Ω - 10Ω
——±500 0.056Ω - 0.091Ω
——±800 0.039Ω - 0.051Ω
SR732E
(1210) 2/3W (.66W1)
1/2W (.5W) 0.1Ω - 10Ω—±100 —
— 0.1Ω - 10Ω±200 0.047Ω - 10Ω
— —±500 0.036Ω - 0.043Ω
— —±1000 0.024Ω - 0.033Ω
Performance Characteristics
E-24, E-96
(D±0.5%)
0.15Ω - 10Ω
—
—
—
0.15Ω - 10Ω
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Parameter Requirement ∆ R ±(%+0.005Ω)
Limit Typical Test Method
Resistance
T.C.R.
25°C
+25°C/-55°C and +25°C/+125°C
Within specified
tolerance
Within specified
T.C.R.
—
—
Overload (Short time) Rated voltage x 2.5 for 5 seconds
±2% ±0.5%
Resistance to Solder Heat 260°C ± 5°C, 10 seconds ± 1 second
1H: ±3%,
1E~W3A: ±1% 1H: ±0.75%
1E~W3A: ±0.3%
Rapid Change of Temperature -40°C (30 minutes), +125°C (30 minutes), 100 cycles
±1% ±0.3%
Moisture Resistance 40°C ± 2°C, 90%-95% RH, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle
1H: ±3%
1E~W3A: ±2% ±1%
Endurance at 70°C 70°C ± 2°C, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle
1H: ±3%
1E~W3A: ±2% ±1%
High Temperature Exposure 1H: +125°C, 1000 hours; 1E, 1J, 2A, 2B, 2E, 2H/W2H, 3A/W3A:+150°C, 1000 hours
±1% ±0.3%
Rated voltage = √Power rating x resistance value or max. working voltage, whichever is lower
149
KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 11/06/18
0.1Ω - 10Ω—
±100 —
— 0.1Ω - 10Ω±200 0.1Ω - 10Ω
——±500 0.051Ω - 0.091Ω
——±800 0.030Ω - 0.047Ω
0.15Ω - 10Ω
—
—
—
0.1Ω - 10Ω—
±100 —
— 0.1Ω - 10Ω±200 0.1Ω - 10Ω
— —±500 0.056Ω - 0.091Ω
— —±800 0.030Ω - 0.051Ω
0.15Ω - 10Ω
—
—
—
0.1Ω - 10Ω—
±100 —
— 0.1Ω - 10Ω±200 0.047Ω - 10Ω
— —±500 0.036Ω - 0.043Ω
— —±800 0.024Ω - 0.033Ω
—
—
—
—
Derating Curve
environmental applications
1E, 1J
2A: 0.33W
2B: 0.33W
2E: 0.5W
W2H, W3A
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.
SR73 2A (0.5W), SR73 2B (0.5W), SR73 2E (0.66W)
current
sense
