TN20SLASH10SLASH7 datasheet(2/3 Pages) FERROXCUBE

2 / 3 page

2008 Sep 01

1667

Ferroxcube

Ferrite toroids

TN20/10/7

RING CORES (TOROIDS)

Effective core parameters

Coating

The cores are coated with polyamide 11 (PA11), flame

retardant in accordance with “UL 94V-2”; UL file number

E 45228 (M).

The colour is white.

Maximum operating temperature is 160

°C.

Isolation voltage

DC isolation voltage: 2000 V.

Contacts are applied on the edge of the ring core, which is

also the critical point for the winding operation.

SYMBOL

PARAMETER

VALUE

UNIT

Σ(I/A)

core factor (C1)

1.30

mm−1

effective volume

1465

mm3

effective length

43.6

effective area

33.6

mm2

mass of core

≈ 7.7

Fig.1 TN20/10/7 ring core.

Dimensions in mm.

handbook, halfpage

;;

CBW308

9.2

±0.4

7.5

±0.45

coating PA11

(

≈0.3)

20.6

±0.6

Ring core data

Properties of cores under power conditions

GRADE

(nH)

µi

TYPE NUMBER

4C65

121

± 25%

≈ 125

TN20/10/7-4C65

3C90

2230

± 25%

≈ 2300

TN20/10/7-3C90

3C11

4150

± 25%

≈ 4300

TN20/10/7-3C11

3E25

5340

± 25%

≈ 5500

TN20/10/7-3E25

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

3C90

≥320

≤ 0.15

≤ 0.16

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