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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.

12/20/10

CSR

four-terminal current sense resistor

Dielectric

Withstanding

Voltage

Resistance

Tolerance

Resistance

Range

E-12

Part

Designation

Rated

Ambient

Temperature

Operating

Temperature

Range

Power

Rating

T.C.R.

(ppm/°C)

Max.

applications and ratings

CSR1

CSR2

1W

2W

±50

5mΩ - 50mΩ

+70°C

500V

-55°C to +125°C

D: ±0.5%,F: ±1%

F: ±1%

Derating Curve

Surface Temperature Rise

environmental applications

100

80

60

40

20

-60

-40

-20

0

40

6080100140

70

20

Ambient Temperature

(°C)

0

-55

120

125

125

100

75

50

25

25

50

75

100

% Rated Power

CSR2

CSR1

0

0

typical circuit schematic

Input

Detecting

Circuit

Output

C

S

R

Voltage Terminal

(KELVIN terminal)

Current Terminal

Performance Characteristics

Parameter

Requirement ∆R ±%

Limit

Typical

Test Method

Resistance

T.C.R.

25°C

+25°C/+125°C

Within regulated

tolerance

Within specified

T.C.R.

—

—

Overload

Rated power x 5 for 5 seconds

±1.0%

±1.0%

Resistance to Solder Heat

260°C ± 5°C, 10 seconds ± 1 second

±1.0%

±1.0%

Rapid Change of Temperature

-55°C (30 minutes), +125°C (30 minutes), 500 cycles

±1.0%

±0.5%

Moisture Resistance

40°C ± 2°C, 90 - 95% RH, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle

±2.0%

±0.5%

Endurance at 70°C

70°C ± 2°C, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle

±1.0%

±0.5%

Low Temperature Operation

-55°C, 1 hour

±0.5%

±0.25%

High Temperature Exposure

+125°C, 100 hours

±0.5%

±0.25%