www.vishay.com

Document Number: 50017

63

Revision: 12-May-09

RWST

Vishay Sfernice

Fixed Wirewound High Power Vitreous Resistors

Electrical Traction Model

NON INDUCTIVE WINDING

For high frequencies, low self induction resistors are available with special windings.

RWSTNI designation.

POWER RATING CHART

TEMPERATURE RISE

SPECIAL FEATURES

RWST STYLE

25 x 138

25 x 168

30 x 250

40 x 370

50 x 373

Designation NF C 93-214

-

RB 25 x 168

RB 30 x 250

-

-

Power Rating at 25 °C

95 W

160 W

280 W

500 W

700 W

Maximum Power

Rating at 25 °C

P max.

110 W

180 W

320 W

600 W

800 W

Ohmic Range

(E12, E24 series)

2.7

Ω

82 k

Ω

2.7

Ω

100 k

Ω

4.7

Ω

220 k

Ω

8.2

Ω

360 k

Ω

12

Ω

430 k

Ω

Limiting Element Voltage

1400 V

1900 V

3000 V

4500 V

5000 V

Critical Resistance

18 k

Ω

20 k

Ω

30 k

Ω

36 k

Ω

30 k

Ω

MODEL AND

STYLE

RWSTNI

25 x 138

RWSTNI

25 x 168

RWSTNI

30 x 250

RWSTNI

40 x 370

RWSTNI

50 x 373

OHMIC RANGE

(E12 SERIES)

22

Ω

2.5 k

Ω

22

Ω

4 k

Ω

120

Ω

6.8 k

Ω

120

Ω

8.2 k

Ω

150

Ω

8.2 k

Ω

AMBIENT TEMPERATURE IN °C

100

75

50

25

0

0

65

130

195

260

325

390

455

RATED POWER IN W

400

300

200

100

0

10

100

1000