EPCOS B66317-G-X2 Datasheet

E 25/13/7 (EF 25)

■ In accordance with IEC 61246

■ E cores are supplied as single units

Magnetic characteristics (per set)

Σl/A = 1,1 mm

–1

le= 57,5 mm

= 52,5 mm

A

e

A

= 51,5 mm

min

Ve= 3 020 mm

2

2

3

Approx. weight 16 g/set

Ungapped

B66317Core

Material A

nH

value

L

µ

A

nH

L1min

P

V

W/set

e

Ordering code

N30 2900 + 30/– 20 % 2530 B66317-G-X130

N27 1750 + 30/– 20 % 1520 1440 < 0,59

B66317-G-X127

(200 mT, 25 kHz, 100 °C)

N87 1850 + 30/– 20 % 1620 1440 < 1,60

B66317-G-X187

(200 mT, 100 kHz, 100 °C)

Gapped

Material g

mm

N27, 0,10
N87 0,16

The A

value in the table applies to a core set comprising one ungapped core (dimension g = 0) and

L

± 0,02 489 425 B66317-G100-X1**
± 0,02 347 302 B66317-G160-X1**
± 0,02 250 218 B66317-G250-X1**

0,25

± 0,05 151 131 B66317-G500-X1**

0,50

± 0,05 91 79 B66317-G1000-X1**

1,00

A

value

L

approx.
nH

µ

e

Ordering code
** = 27 (N27)

= 87 (N87)

one gapped core (dimension g > 0).

410 08/01

E 25/13/7 (EF 25)

Calculation factors (for formulas, see “E cores: general information”, page 382)

B66317Core

Material Relationship between

air gap – A

value

L

Calculation of saturation current

K1 (25 °C) K2 (25 °C) K3 (25 °C) K4 (25 °C) K3 (100 °C) K4 (100 °C)

N27 90 – 0,731 139 – 0,847 129 – 0,865

N87 90 – 0,731 139 – 0,796 125 – 0,873

Validity range: K1, K2: 0,10 mm < s < 2,00 mm

K3, K4: 60 nH < A

< 570 nH

L

411 08/01

E 25/13/7 (EF 25)

B66208Accessories

Coil former (magnetic axis horizontal or vertical)

Material: GFR polyterephthalate; UL 94 V-0, insulation class to IEC 60085:

B66208-A, -J: F max. operating temperature 155 °C, color code black

B66208-W: H max. operating temperature 180 °C, color code black
Solderability: to IEC 60068-2-20, test Ta, method 1 (aging 3): 235 °C, 2 s
Resistance to soldering heat: to IEC 60068-2-20, test Tb, method 1B: 350 °C, 3,5 s
Winding: see “Processing Notes”, page 159
Squared pins
Yoke Material: Stainless spring steel (0,25 mm)

Coil former Ordering code
Figure Sections A

mm

N

l

2

N

mm

A

valueµΩPins

R

1 1 61 50 28 10 B66208-A1110-T1

2 1 61 50 28 10 B66208-J1110-T1

B66208-W1010-T1

Yoke (ordering code per piece, 2 are required) B66208-A2010

Figure 1, horizontal version (type -A)

_

27,5 0,3

_

17,3 0,25

7,7+0,2

_

0,317

0,7±0,10,7±0,1

17,8 max.

_

3,5 0,5

0,3528

_

_

9,4 0,25

2,2±0,1 7,7+0,2

_

9,4 0,25

10

15

6.

ø1,6+0,1

4 x 5,08 = 20,32

5,08

412 08/01

20,32

0,7

Hole arrangement
View in
mounting direction

FEK0352-I

E 25/13/7 (EF 25)

Figure 2, vertical version (type -W and -J)

_

27,5 0,3

_

0,317,3

0,85±0,1

B66208Accessories

17,3_0,3

26 max.

0,6

_

3,6

7,7+0,2

Yoke

9,6_0,2

0,15

_

17

0,85±0,1

2,2

7,7+0,2

106.

15

4 x 5,08 = 20,32

5,08

0,5 max.

0,2

_

+0,5

26,1

0,7

12,7

_

0,29,6

ø 1,6+0,1

Hole arrangement
View in mounting direction

FEK0323-5

_

7,6 0,1

5,75±0,2

3,5

+0,1

_

_

0,2

9,2 0,1

FEK0115-2

413 08/01

E 25/13/7 (EF 25)

B66208Accessories

Coil former for SMPS transformers with line isolation

Material: GFR polyterephthalate (UL 94 V-0, insulation class to IEC 60085:

F max. operating temperature 155 °C), color code black
Solderability: to IEC 60068-2-20, test Ta, method 1 (aging 3): 235 °C, 2 s
Resistance to soldering heat: to IEC 60068-2-20, test Tb, method 1B: 350 °C, 3,5 s
Winding: see “Processing Notes”, page 159
Squared pins

Yoke

Material: Nickel silver (0,3 mm) with ground terminal

Coil former Ordering code
Sections A

mm

N

2

l

N

mm

A

valueµΩPins

R

1 56,9 69,2 41,8 9 B66208-K1009-T1

Yoke (ordering code per piece) B66208-A2003

Coil former Yoke

17,3

10

_

7,7

_

0,2

0,15

_

0,65 0,1

17,3

10

_

7,7

_

0,2

0,15

0,225,7

_

0,23,5

_

2,54

5 1

20,32

24

9

20,32

_

0,2

0,45

ø1,3+0,15

6

12,7

_

17,2 0,25

_

0,85 0,1

12,7

15,1

_

0,4

18,8

Hole arrangement
View in mounting direction

FEK0397-I

3,2

414 08/01

Herausgegeben von EPCOS AG
Marketing Kommunikation, Postfach 80 17 09, 81617 München, DEUTSCHLAND

 EPCOS AG 2000. Alle Rechte vorbehalten. Vervielfältigung, Veröffentlichung, Verbreitung und
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Published by EPCOS AG
Marketing Communications, P.O. Box 80 17 09, 81617 Munich, GERMANY

 EPCOS AG 2000. All Rights Reserved. Reproduction, publication and dissemination of this bro­chure and the information contained therein without EPCOS’ prior express consent is prohibited.

The information contained in this brochure describes the type of component and shall not be con­sidered as guaranteed characteristics. Purchase orders are subject to the General Conditions for
the Supply of Products and Services of the Electrical and Electronics Industry recommended by the
ZVEI (German Electrical and Electronic Manufacturers’ Association), unless otherwise agreed.

This brochure replaces the previous edition.

For questions on technology, prices and delivery please contact the Sales Offices of EPCOS AG or
the international Representatives.

Due to technical requirements components may contain dangerous substances. For information on
the type in question please also contact one of our Sales Offices.

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