RM7-3F3 datasheet(2/4 Pages) FERROXCUBE

Part #	RM7-3F3

Description	RM, RM/I, RM/ILP cores and accessories

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Manufacturer	FERROXCUBE [Ferroxcube International Holding B.V.]

Direct Link	http://www.ferroxcube.com

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2 / 4 page

2008 Sep 01

1240

Ferroxcube

RM, RM/I, RM/ILP cores and accessories

RM7/ILP

CORE SETS

Effective core parameters

SYMBOL

PARAMETER

VALUE

UNIT

Σ(I/A)

core factor (C1)

0.520

mm−1

Ve

effective volume

1 060

mm3

Ie

effective length

23.5

mm

Ae

effective area

45.3

mm2

Amin

minimum area

39.6

mm2

m

mass of set

≈ 6.0

g

handbook, halfpage

CBW129

3.3

>9.3

7.6

±0.25

4.7 +

0.5

0

9.8

0

−0.2

∅7.25 0

−0.3

20.3

0

−0.8

17.2

0

−0.7

∅15.4 max.

Fig.1 RM7/ILP core set.

Dimensions in mm.

Core sets for general purpose transformers and power applications

Clamping force for AL measurements 40

±20 N.

Properties of core sets under power conditions

GRADE

AL

(nH)

µe

AIR GAP

(

µm)

TYPE NUMBER

3C90

3650

±25%

≈ 1510

≈ 0RM7/ILP-3C90

3F3

3100

±25%

≈ 1280

≈ 0RM7/ILP-3F3

3F4

1800

±25%

≈ 740

≈ 0RM7/ILP-3F4

GRADE

B (mT) at

CORE LOSS (W) at

H = 250 A/m;

f = 25 kHz;

T = 100

°C

f = 25 kHz;

=200 mT;

T=100

°C

f = 100 kHz;

= 100 mT;

T = 100

°C

f = 400 kHz;

=50mT;

T = 100

°C

f= 1 MHz;

=30 mT;

T=100

°C

f= 3 MHz;

=10mT;

T = 100

°C

3C90

≥320

≤ 0.13

≤ 0.14

−−

−

3F3

≥300

−≤ 0.12

≤ 0.20

−−

3F4

≥250

−−

−

≤ 0.32

≤ 0.5

B

ˆ

B

ˆ

B

ˆ

B

ˆ

B

ˆ

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