WK73

wide terminal type flat chip resistors

31

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.

12/16/08

environmental applications

PMS 300 neg.

Black neg.

Maximum

Working

Voltage

E-24

(F±1%)

E-24

(J±5%)

Part

Designation

Maximum

Overload

Voltage

Operating

Temperature

Range

Power

Rating

@ 70°C

WK73R2H

WK73S2J

220m - 9.1

10 - 430k

—

27m - 200m

—

200V

400V

200V

400V

200V

400V

±100

1.0W

1.0W

±100

±800

Resistance Range

T.C.R.

(ppm/°C)

Max.

-55°C

to

+155°C

470k - 1M

±200

±800

±200

WK73R2J

WK73S3A

WK73R3A

240m - 9.1

200V

400V

1.5W

1.5W

±100

33m - 220m

—

22m - 30m

10 - 510k

560k - 1M

360m - 9.1

33m - 330m

360k - 1M

10 - 330k

220m - 9.1

10 - 430k

10m - 24m

27m - 200m

10m - 30m

470k - 1M

240m - 9.1

33m - 220m

10m - 20m

22m - 30m

10 - 510k

560k - 1M

360m - 9.1

33m - 330m

360k - 1M

10 - 330k

±200

±800

±300

±100

±200

±100

±200

±200

±100

Performance Characteristics

Parameter

Requirement ∆ R

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%

±0.2%

Resistance to Solder Heat

260°C ± 5°C, 10 seconds ± 1 second

±1%

±0.2%

Bending Test

Holding point 90mm, Bending 1 time, Bending 5mm

±1%

±0.1%

Rapid Change of Temperature

-55°C (30 minutes), +155°C (30 minutes), 5 cycles

±0.5%

±0.1%

Moisture Resistance

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

±2%

±0.2%

Endurance at 70°C

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

±2%

±0.2%

High Temperature

Exposure

+155°C, 1000 hours

±1%

±0.2%

WK73S2H

1.0W

1.0W

applications and ratings

430m - 9.1

10 - 3.3k

±100

±100

430m - 9.1

10 - 3.3k

—

30m - 390m

±800

±200

10m - 27m

30m - 390m

WK73S2B

WK73R2B

3.6k - 1M

±100

3.6k - 1M

WK73R2B*

0.75W

* Under Development.

Additional environmental applications can also be found at www.koaspeer.com

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4:04 PM

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