2

09/06

Please read Cautions and warnings and

Important notes at the end of this document.

Material properties

Preferred application

Power transformers

Material

N27

Base material

MnZn

Symbol

Unit

Initial permeability

(T = 25 °C)

μ

i

2000

±25%

Flux density

(H = 1200 A/m, f = 10 kHz)

mT

mT

500

410

Coercive field strength

(f = 10 kHz)

A/m

A/m

23

19

Optimum

frequency range

kHz

25 …

150

Hysteresis

material constant

η

B

Curie temperature

°C

>220

Mean value of

α

F

at 25 … 55 °C

3

Density (typical values)

4800

Relative core losses

(typical values)

25 kHz, 200 mT, 100 °C

155

100 kHz, 200 mT, 100 °C

920

300 kHz, 100 mT, 100 °C

—

500 kHz, 50 mT, 100 °C

—

1 MHz, 50 mT, 100 °C

—

Resistivity

ρΩm3

Core shapes

P, PM, ETD, ER, E, U,

Toroid

N27

SIFERRIT materials