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134

Series

Terminal Type

L= lug terminals

A= amp terminals

W= 30cm insulated wire cable 18AWG

Tolerance

J = 5%

K = 10%

Wattage

at 40°C

base plate

temp.

Ohms

R47= 0.47Ω

RoHS

Compliant

Standard part numbers

WFH90L4R7KE

WFH90L10RKE

WFH90L25RJE

WFH90L50RJE

WFH90L100JE

WFH90L470JE

WFH90L750JE

WFH90L1K0JE

WFH90L2K7JE

WFH90L5K0JE

WFH160LR47KE

WFH160L1R0KE

WFH160L2R0KE

WFH160L10RKE

WFH160L27RJE

WFH160L50RJE

WFH160L75RJE

WFH160L100JE

WFH160L150JE

WFH160L250JE

WFH160L1K0JE

WFH160L5K0JE

WFH160L10KJE

WFH230L1R0KE

WFH230L2R0KE

WFH230L5R0KE

WFH230L10RKE

WFH230L27RJE

WFH230L50RJE

WFH230L75RJE

WFH230L100JE

WFH230L150JE

WFH230L250JE

WFH230L1K0JE

WFH230L1K5JE

WFH230L2K5JE

WFH330L1R0KE

WFH330L2R0KE

WFH330L10RKE

WFH330L27RJE

WFH330L50RJE

WFH330L75RJE

WFH330L100JE

WFH330L150JE

WFH330L250JE

WFH330L1K0JE

WFH330L5K0JE

WFH330L10KJE

The following equations are

applied in the dimensioning of

the resistors at stationary load.

If more information is required

please consult Ohmite. It is as-

sumed that the air around the

resistors is stationary (worst

case). See ohmite.com for more

examples.

dime NS i ONS

(mm)

O rderi N g i NFO rmati ON

de S ig N i NFO rmati ON

4.8

6

0.6

ø2.2

300

10

Wire

terminal

Lug

terminal

A

B

6.3

51

41

15

13.6

12.6

8

0.8

ø4.5

L

Amp

terminal

WFH Series

Aluminum Housed Wirewound Power

1. WFH is mounted on a heat sink:

Check that:

B. The Temperature of the Heat Sink is known,

Check that:

2. WFH is mounted without a heat sink:

Check that:

Where:

= Heat sink temperature (chassis).

T

= Temperature on top of the Aluminum profile.

Type

Watts

A

B

L

WFH90

90

70

39.7

53

WFH160

160

140

80

123

WFH230

230

210

2x 80

193

WFH330

330

280

2x 100

263