Material

  μi

Bs  (25°C)

  Tanδ/ μi

  Tc(°C)

  αμir(×10-6)

d g/ cm3

mT

KA/m

×10-6

MHz

WM 30

3000±25%

460

1.94

/

/

>190

/

4.8

WM 40

2300±25%

500

1.94

/

/

>220

/

4.8

WN 100Q

100 ±20%

420

4

55

0.1

>260

30

4.8

WN 200T

200 ±20%

420

4

40

0.1

>250

15

5.0

WN 300T

300 ±20%

420

4

30

0.1

>240

20

5.0

WN 400T

400 ±20%

410

4

25

0.1

>230

18

5.0

WN 500L

500 ±20%

410

4

30

0.1

>220

15

5.0

SOFT FERRITE APPLICATIONS

MAGNETIC DEVICES

Power transformer and chokes

Inductors and tuned transformers

Pulse and wideband transformers

Magnetic deflection structures

Recording heads

Rotating transformers

Shield beads and chokes

Transducers

USED IN

HF Power supplies and lighting balasts

Frequency selective circuits

Matching devices

TV sets and monitors

Storage devices

VCR’s

Interference suppresion

Vending machines and ultrasonic cleaners

RODS, TUBES & STRIPS

Toroids

Balun core

Drum core

A P P L I C A T I O N

MAGNETIC SHIELDING

CAN BE SUPPLIED GAPPED

CORE STANDARDIZATION

COST OF CORE

COST OF WINDING &ASSEMBLY

HEAT DISSIPATION

Antennas, HF welding

Very poor

NA

N o

Very low

Average

G o o d

Wideband and pulse transformers Common mode chokes

Excellent                     Excellent       

Rarely                       No

De facto                     No

L o w                        Low

Very High                    Very High

G o o d                      NA

inductors

Good

No

No

Low

Average

Good