FERROXCUBE

DATA SHEET

EFD25/13/9
EFD cores and accessories
Supersedes data of September 2004 2008 Sep 01
Ferroxcube

EFD cores and accessories EFD25/13/9

CORES
Effective core parameters

SYMBOL PARAMETER VALUE UNIT

mm −1
handbook, halfpage
Σ(I/A) core factor (C1) 1.00
9.3
Ve effective volume 3300 mm 3 12.5 0.25
0.15
Ie effective length 57.0 mm
Ae effective area 58.0 mm 2
Amin minimum area 55.0 mm 2
m mass of core half ≈8 g 25 0.65
18.7 0.6
11.4
0.2

9.1 0.6
0.2 5.2
0.15
MGC342

Dimensions in mm.

Fig.1 EFD25/13/9 core half.

Core halves and sets

AL measured as a set or in combination with a non-gapped core half, clamping force for AL measurements, 40 ±20 N.

AL AIR GAP
GRADE µe TYPE NUMBER
(nH) (µm)
3C90 160 ±3% ≈ 125 ≈ 570 EFD25/13/9-3C90-A160
250 ±3% ≈ 196 ≈ 320 EFD25/13/9-3C90-A250
315 ±5% ≈ 246 ≈ 240 EFD25/13/9-3C90-A315
400 ±8% ≈ 313 ≈ 180 EFD25/13/9-3C90-A400
630 ±10% ≈ 493 ≈ 100 EFD25/13/9-3C90-A630
2200 ±25% ≈ 1720 ≈0 EFD25/13/9-3C90
3C94 160 ±3% ≈ 125 ≈ 570 EFD25/13/9-3C94-A160
250 ±3% ≈ 196 ≈ 320 EFD25/13/9-3C94-A250
315 ±5% ≈ 246 ≈ 240 EFD25/13/9-3C94-A315
400 ±8% ≈ 313 ≈ 180 EFD25/13/9-3C94-A400
630 ±10% ≈ 493 ≈ 100 EFD25/13/9-3C94-A630
2200 ±25% ≈ 1720 ≈0 EFD25/13/9-3C94
3C95 2660 ±25% ≈ 2085 ≈0 EFD25/13/9-3C95
3C96 2000 ±25% ≈ 1560 ≈0 EFD25/13/9-3C96

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EFD cores and accessories EFD25/13/9

AL AIR GAP
GRADE µe TYPE NUMBER
(nH) (µm)
3F3 160 ±3% ≈ 125 ≈ 570 EFD25/13/9-3F3-A160
250 ±3% ≈ 196 ≈ 320 EFD25/13/9-3F3-A250
315 ±5% ≈ 246 ≈ 240 EFD25/13/9-3F3-A315
400 ±8% ≈ 313 ≈ 180 EFD25/13/9-3F3-A400
630 ±10% ≈ 493 ≈ 100 EFD25/13/9-3F3-A630
2000 ±25% ≈ 1560 ≈0 EFD25/13/9-3F3
3F35 1500 ±25% ≈ 1170 ≈0 EFD25/13/9-3F35
3F4 160 ±3% ≈ 125 ≈ 500 EFD25/13/9-3F4-A160
250 ±3% ≈ 196 ≈ 270 EFD25/13/9-3F4-A250
315 ±5% ≈ 246 ≈ 290 EFD25/13/9-3F4-A315
400 ±8% ≈ 313 ≈ 130 EFD25/13/9-3F4-A400
630 ±10% ≈ 493 ≈ 60 EFD25/13/9-3F4-A630
1000 ±25% ≈ 780 ≈0 EFD25/13/9-3F4
3F45 1000 ±25% ≈ 780 ≈0 EFD25/13/9-3F45

Properties of core sets under power conditions

B (mT) at CORE LOSS (W) at

GRADE H = 250 A/m; f = 25 kHz; f = 100 kHz; f = 100 kHz; f = 100 kHz; f = 400 kHz;
f = 25 kHz; ˆ = 200 mT;
B Bˆ = 100 mT; Bˆ = 200 mT; Bˆ = 200 mT; Bˆ = 50 mT;
T = 100 °C T = 100 °C T = 100 °C T = 25 °C T = 100 °C T = 100 °C
3C90 ≥330 ≤ 0.35 ≤ 0.38 − − −
3C94 ≥330 − ≤ 0.30 − ≤ 1.8 −
3C95 ≥330 − − ≤ 1.95 ≤ 1.85 −
3C96 ≥330 − ≤ 0.22 − ≤ 1.4 ≤ 0.6
3F35 ≥300 − − − − ≤ 0.28
3F3 ≥315 − ≤ 0.38 − − ≤ 0.66
3F4 ≥300 − − − − −

Properties of core sets under power conditions (continued)

B (mT) at CORE LOSS (W) at

GRADE H = 250 A/m; f = 500 kHz; f = 500 kHz; f = 1 MHz; f = 1 MHz; f = 3 MHz;
f = 25 kHz; Bˆ = 50 mT; Bˆ = 100 mT; ˆ = 30 mT;
B ˆ = 50 mT;
B ˆ = 10 mT;
B
T = 100 °C T = 100 °C T = 100 °C T = 100 °C T = 100 °C T = 100 °C
3C90 ≥330 − − − − −
3C94 ≥330 − − − − −
3C95 ≥330 − − − − −
3C96 ≥330 ≤ 1.2 − − − −
3F35 ≥300 ≤ 0.42 ≤ 3.4 − − −
3F3 ≥315 − − − − −
3F4 ≥300 − − ≤ 1.0 − ≤ 1.6
3F45 ≥300 − − ≤ 0.75 ≤ 2.8 ≤ 1.25

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EFD cores and accessories EFD25/13/9

COIL FORMERS
General data

PARAMETER SPECIFICATION
Coil former material phenolformaldehyde (PF), glass-reinforced, flame retardant in accordance with
“UL 94V-0” ; UL file number E167521(M)
Pin material copper-tin alloy (CuSn), tin (Sn) plated, see note 1
Maximum operating temperature 180 °C, “IEC 60085”, class H
Resistance to soldering heat “IEC 60068-2-20” , Part 2, Test Tb, method 1B, 350 °C, 3.5 s
Solderability “IEC 60068-2-20” , Part 2, Test Ta, method 1: 235 °C, 2 s

18 −0.2
13.1 −0.2 18 −0.2
11.78 +0.1 (16.4 min.)

handbook, full pagewidth

12.55 12 5.53 +0.1 6.9 −0.1
max. −0.2
1.3
±0.15
3.6

10 ∅0.8

20 22.5 5
CBW501 25.2 max. 26.2 max.

Dimensions in mm.

Fig.2 EFD25/13/9 coil former; 10-pins.

Winding data and area product for EFD25/13/9 coil former with 10-pins

MINIMUM AVERAGE AREA

WINDING
NUMBER OF WINDING LENGTH OF PRODUCT
AREA TYPE NUMBER
SECTIONS WIDTH TURN Ae x Aw
(mm2)
(mm) (mm) (mm4)
1 40.2 16.4 46.4 2330 CSH-EFD25-1S-10P(1)

1. Also available with post-inserted pins.

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EFD cores and accessories EFD25/13/9

COIL FORMERS

General data

PARAMETER SPECIFICATION
Coil former material Sumikon PM-9630 (PF), glass-reinforced, flame retardant in accordance with “UL
94V-0” ; UL file number E41429
Pin material copper-tin alloy (CuSn), Gold (Au) plated
Maximum operating temperature 180 °C, “IEC 60085”, class H
Resistance to soldering heat “IEC 60068-2-20” , Part 2, Test Tb, method 1B, 350 °C, 3.5 s
Solderability “IEC 60068-2-20” , Part 2, Test Ta, method 1: 235 °C, 2 s

18 0 18 0
− 0.15 − 0.15
13 + 0.1 16.45 min
0
11.7 + 0.1
0

6.8 + 0.1
12.5 0 28
± 0.2 5.5 + 0.1 0.4
0 ± 0.05

2.75
1.2 0.9 (4x) 26 3.75
2
(10x) 1.5 (10x)
3.75 ± 0.1 28 ± 0.2
MFP032
11.25 ± 0.1 30.1 ± 0.2
18.75 ± 0.1 31.5 ± 0.2

25 ± 0.2

Dimensions in mm.

Fig.3 EFD25/13/9 coil former (SMD) ; 12-pins.

Winding data and area product for EFD25/13/9 coil former with 12-pins

MINIMUM AVERAGE AREA

WINDING
NUMBER OF WINDING LENGTH OF PRODUCT
AREA TYPE NUMBER
SECTIONS WIDTH TURN Ae x Aw
(mm2)
(mm) (mm) (mm4)
1 39.0 16.45 46.4 2260 CSHS-EFD25-1S-12P

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EFD cores and accessories EFD25/13/9

0
0 6
24 − 0.3
− 0.3

8 ± 0.1

23 ± 0.2

0.25 ± 0.05

26
± 0.2

26 ± 0.2 MFP033

Dimensions in mm.

Fig.4 CLM-EFD25 mounting clamp.

5 8
handbook, halfpage

29 23.3

MGC344
4.5
Dimensions in mm.

Fig.5 CLI-EFD25 mounting clip.

MOUNTING PARTS
General data

ITEM REMARKS FIGURE TYPE NUMBER

Clip stainless steel (CrNi); clamping force ≈ 30 N 4 CLI-EFD25
Clamp stainless steel (CrNi); clamping force ≈ 30 N 5 CLM-EFD25

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EFD cores and accessories EFD25/13/9

DATA SHEET STATUS DEFINITIONS

DATA SHEET PRODUCT

DEFINITIONS
STATUS STATUS
Preliminary Development This data sheet contains preliminary data. Ferroxcube reserves the right to
specification make changes at any time without notice in order to improve design and
supply the best possible product.
Product specification Production This data sheet contains final specifications. Ferroxcube reserves the right
to make changes at any time without notice in order to improve design and
supply the best possible product.

DISCLAIMER
Life support applications  These products are not designed for use in life support appliances, devices, or systems
where malfunction of these products can reasonably be expected to result in personal injury. Ferroxcube customers
using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Ferroxcube
for any damages resulting from such application.

PRODUCT STATUS DEFINITIONS

STATUS INDICATION DEFINITION

These are products that have been made as development samples for the purposes of
Prototype technical evaluation only. The data for these types is provisional and is subject to
change.
Design-in These products are recommended for new designs.
These products are recommended for use in current designs and are available via our
Preferred
sales channels.
These products are not recommended for new designs and may not be available
Support
through all of our sales channels. Customers are advised to check for availability.

2008 Sep 01 7