Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.

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KOA SPEER ELECTRONICS, INC.

SS-239 R4

5. Rating

5-1 Rating

For temperature in excess of 70°C,

the load shall be derated in accordance

with the following figure.

4. Standard Applications

Derating Curve

Surface Temperature Rise

100

80

60

40

20

-60

-40

0

40

60

80

100

160

70

20

Ambient Temperature

(

°C)

0

-55

120

155

-20

140

150

1E

1J, 2A, 2B,

2E, 2H, 3A

180

160

120

80

40

25

50

75

100

% Rated Power

W3A (1W)

W2H (.75W)

2E (.5W)

2A (.25W)

1E (.125W)

0

0

140

100

60

20

2E (.66W)

2B (.5W)

2A (.33W)

1J (.2W)

1E (.166W)

2B (.33W)

Measuring Point

* Parenthesis indicate EIA package size codes.

** See Appendix D for available decade values.

*** 1E (F: ±1%) E-24 values only.

1

Power Rating for SR731E 0.91Ω - 10Ω = 1/10 (0.1W)

2

Please contact factory for limitation of Surface Mount Temp. Rise

Absolute

Maximum

Working

Voltage

E-24, E-96

(F±1%)

E-24

(G±2%)

E-24

(J±5%)

Part

Designation*

Maximum

Overload

Voltage

(5 Secs. Max.)

Operating

Temperature

Range

Power

Rating

@ 70°C

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

0.1Ω - 10Ω

0.1Ω - 10Ω

0.1Ω - 10Ω

0.51Ω - 10Ω

0.2Ω - 0.47Ω

1.11V

2.79V

1.41V

3.53V

0.1Ω - 0.18Ω

±200

±300

1/8W (.125W)

1/5W (.2W)

SR732A

(0805)

1.58V

3.95V

1/4W (.25W)

±500

±200

Resistance Range**

T.C.R.

(ppm/°C)

Max.

-55°C

to

+150°C

0.1Ω - 10Ω

—

±100

—

—

0.1Ω - 10Ω

±200

0.1Ω - 10Ω

——

±500

0.051Ω - 0.091Ω

——

±800

0.030Ω - 0.047Ω

SR732B

(1206)

1.81V

4.54V

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

(2010)

2.73V

6.84V

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

(2512)

3.16V

7.90V

1W

0.1Ω - 10Ω

—

±100

—

—

0.1Ω - 10Ω

±200

0.1Ω - 10Ω

——

±500

0.056Ω - 0.091Ω

——

±800

0.039Ω - 0.051Ω

SR732E

(1210)

2.23V

5.59V

1/2W (.5W)

0.1Ω - 10Ω

—

±100

—

—

0.1Ω - 10Ω

±200

0.047Ω - 10Ω

——

±500

0.036Ω - 0.043Ω

——

±1000

0.024Ω - 0.033Ω

E-24, E-96

(D±0.5%)

—

—

—

—

0.15Ω - 10Ω

—

—

—

0.15Ω - 10Ω

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

SS-239 R4

12/5/07

10:11 AM

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