2

09/06

Please read Cautions and warnings and

Important notes at the end of this document.

Material properties

Preferred application

Resonant circuit inductors

Material

N48

Base material

MnZn

Color code (adjuster)

—

Symbol

Unit

Initial permeability

(T = 25 °C)

μ

i

2300

±25%

Meas. field strength

Flux density (near

saturation) (f = 10 kHz)

H

A/m

mT

mT

1200

420

310

Coercive field strength

(f = 10 kHz)

A/m

A/m

26

19

Optimum

frequency range

MHz

0.01 …

0.1

tan

δ/μ

i

<4

<6

Hysteresis

material constant

η

B

Curie temperature

°C

>170

Relative

temperature coefficient

at 25 … 55 °C

at 5 … 25 °C

α

F

0.3 … 1.3

0.3 … 1.3

Mean value of

α

F

at 25 … 55 °C

0.70

Density (typical values)

4700

Disaccommodation

factor at 25 °C

DF

2

Resistivity

ρ

Ωm

3

Core shapes

RM, P

N48

SIFERRIT materials