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E 25/13/7 (EF 25) Core
I In accordance with IEC 61246 I E cores are supplied as single units
B66317
Magnetic characteristics (per set)
l/A le Ae A min Ve
= 1,1 mm-1 = 57,5 mm = 52,5 mm2 = 51,5 mm2 = 3 020 mm3
Approx. weight 16 g/set
Ungapped Material N30 N27 N87 A L value nH
e
A L1min P V nH W/set
Ordering code B66317-G-X130
2900 + 30/- 20 % 2530 1750 + 30/- 20 % 1520 1440 1850 + 30/- 20 % 1620 1440
< 0,59 B66317-G-X127 (200 mT, 25 kHz, 100 C) < 1,60 B66317-G-X187 (200 mT, 100 kHz, 100 C)
Gapped Material g mm N27, N87 0,10 0,02 0,16 0,02 0,25 0,02 0,50 0,05 1,00 0,05 A L value approx. nH 489 347 250 151 91
e
Ordering code ** = 27 (N27) = 87 (N87) B66317-G100-X1** B66317-G160-X1** B66317-G250-X1** B66317-G500-X1** B66317-G1000-X1**
425 302 218 131 79
The A L value in the table applies to a core set comprising one ungapped core (dimension g = 0) and one gapped core (dimension g > 0).
410 08/01
E 25/13/7 (EF 25) Core
Calculation factors (for formulas, see "E cores: general information", page 382) Material Relationship between air gap - A L value K1 (25 C) N27 N87 Validity range: 90 90 K2 (25 C) - 0,731 - 0,731 Calculation of saturation current K3 (25 C) 139 139 K4 (25 C) - 0,847 - 0,796 K3 (100 C) K4 (100 C) 129 125 - 0,865 - 0,873
B66317
K1, K2: 0,10 mm < s < 2,00 mm K3, K4: 60 nH < AL < 570 nH
411 08/01
E 25/13/7 (EF 25) Accessories
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 Figure 1 2 Sections 1 1 AN mm2 61 61 lN mm 50 50 AR value 28 28 Pins 10 10 B66208-A1110-T1 B66208-J1110-T1 B66208-W1010-T1 B66208-A2010 Ordering code
B66208
Yoke (ordering code per piece, 2 are required) Figure 1, horizontal version (type -A)
27,5 _ 0,3 17,3 _ 0,25 7,7+0,2 17 _ 0,3 0,70,1
0,70,1
17,8 max.
3,5 _ 0,5
2,20,1
9,4 _ 0,25
7,7+0,2
0,7
9,4 _ 0,25 o1,6+0,1 6.
4 x 5,08 = 20,32
28 _ 0,35
1
5
5,08
10
Hole arrangement View in mounting direction
20,32
FEK0352-I
412 08/01
E 25/13/7 (EF 25) Accessories
Figure 2, vertical version (type -W and -J)
27,5 _ 0,3
B66208
26 max.
3,6 _ 0,6
2,2 _ 0,15
0,850,1
17
9,6 _ 0,2
0,850,1
17,3 _ 0,3
17,3 _ 0,3
9,6 _ 0,2
0,7 o 1,6+0,1 7,7+0,2
4 x 5,08 = 20,32
7,7+0,2
5,08
1
Yoke
0,5 max.
_ 0,2 3,5 +0,1
5,750,2
7,6 _ 0,1 9,2 _ 0,1
+0,5 26,1_ 0,2
FEK0115-2
6. 5
10
Hole arrangement View in mounting direction 12,7
FEK0323-5
413 08/01
E 25/13/7 (EF 25) Accessories
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: Coil former Sections 1 AN mm2 56,9 lN mm 69,2 A R value 41,8 Pins 9 B66208-K1009-T1 B66208-A2003 Yoke
17,3 _ 0,2 10 _ 0,15 7,7
B66208
Nickel silver (0,3 mm) with ground terminal Ordering code
Yoke (ordering code per piece) Coil former
17,3 _ 0,2 7,7 10 _ 0,15
25,7 _ 0,2
17,2 _ 0,25
0,65 _ 0,1
3,5 _ 0,2
0,85 _ 0,1
0,45 20,32 24 _ 0,2 o1,3+0,15 9 6
12,7 15,1 18,8 _ 0,4
2,54
Hole arrangement View in mounting direction
5 20,32
1
FEK0397-I
12,7
414 08/01
3,2
Herausgegeben von EPCOS AG Marketing Kommunikation, Postfach 80 17 09, 81617 Munchen, DEUTSCHLAND EPCOS AG 2000. Alle Rechte vorbehalten. Vervielfaltigung, Veroffentlichung, Verbreitung und Verwertung dieser Broschure und ihres Inhalts ohne ausdruckliche Genehmigung der EPCOS AG nicht gestattet. Mit den Angaben in dieser Broschure werden die Bauelemente spezifiziert, keine Eigenschaften zugesichert. Bestellungen unterliegen den vom ZVEI empfohlenen Allgemeinen Lieferbedingungen fur Erzeugnisse und Leistungen der Elektroindustrie, soweit nichts anderes vereinbart wird. Diese Broschure ersetzt die vorige Ausgabe. Fragen uber Technik, Preise und Liefermoglichkeiten richten Sie bitte an den Ihnen nachstgelegenen Vertrieb der EPCOS AG oder an unsere Vertriebsgesellschaften im Ausland. Bauelemente konnen aufgrund technischer Erfordernisse Gefahrstoffe enthalten. Auskunfte daruber bitten wir unter Angabe des betreffenden Typs ebenfalls uber die zustandige Vertriebsgesellschaft einzuholen.
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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