2

09/06

Please read Cautions and warnings and

Important notes at the end of this document.

Material properties

Preferred application

Inductors for line attenuation

Material

M13

Base material

NiZn

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

280

135

Coercive field strength

(f = 10 kHz)

A/m

A/m

12

8

Optimum

frequency range

MHz

0.001 …

0.1

tan

δ/μ

i

<5

<20

Hysteresis

material constant

η

B

Curie temperature

°C

>105

Relative

temperature coefficient

at 25 … 55 °C

at 5 … 25 °C

α

F

—

—

Mean value of

α

F

at 25 … 55 °C

3.7

Density (typical values)

5200

Disaccommodation

factor at 25 °C

DF

—

Resistivity

Core shapes

Toroid,

Double-aperture

M13

SIFERRIT materials