KOA SPEER ELECTRONICS, INC.
SS-239 R4
4. Standard Applications
Part
Designation*
SR731E
(0402)
SR731J
(0603)
SR732A
(0805)
SR732B
(1206)
SR732E
(1210)
SR732H
(2010)
SR733A
(2512)
Power
Rating
@ 70°C
1/8W (.125W)
1/6W (.166W
2
)
1/5W (.2W)
1/4W (.25W)
1/3W (.33W
2
)
1/3W (.33W)
1/2W (.5W
2
)
1/2W (.5W)
2/3W (.66W
2
)
3/4W (.75W)
1W
T.C.R.
(ppm/°C)
Max.
±200
±300
±500
±200
±100
±200
±500
±800
±100
±200
±500
±800
±100
±200
±500
±1000
±100
±200
±500
±800
±100
±200
±500
±800
Resistance Range**
E-24, E-96 E-24, E-96
(D±0.5%)
(F±1%)
—
—
—
—
0.15Ω - 10Ω
—
—
—
0.15Ω - 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%)
0.51Ω - 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
1.11V
1.41V
1.58V
1.81V
2.23V
2.73V
3.16V
Maximum
Operating
Overload
Temperature
Voltage
Range
(5 Secs. Max.)
2.79V
3.53V
3.95V
4.54V
5.59V
6.84V
7.90V
-55°C
to
+150°C
* Parenthesis indicate EIA package size codes.
** See Appendix D for available decade values.
1
Power Rating for SR731E 0.91Ω - 10Ω = 1/10 (0.1W)
2
Please contact factory for limitation of Surface Mount Temp. Rise
*** 1E (F: ±1%) E-24 values only.
5. Rating
5-1 Rating
For temperature in excess of 70°C,
the load shall be derated in accordance
with the following figure.
Derating Curve
100
80
% Rated Power
60
40
20
1E
Surface Temperature Rise
180
160
Temperature Rise
(°C)
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 (.166W)
1J (.2W)
1E (.125W)
W3A (1W)
1J, 2A, 2B,
2E, 2H, 3A
Measuring Point
0
-60 -40 -20
-55
0
80 100 120 140 160
70
150 155
Ambient Temperature
(°C)
40
60
20
% Rated Power
PAGE 2 OF 8
Bolivar Drive
■
P.O. Box 547
■
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.