PHILIPS EFD25-3F3

MAGNETIC PRODUCTS
DATA SHEET
EFD25
EFD cores and accessories
Product specification
File under Magnetic Products, MA01
1997 Nov 21
Philips Components
Product specification
EFD cores and accessories
EFD25
CORES
Effective core parameters
SYMBOL
PARAMETER
VALUE
UNIT
Σ(I/A)
core factor (C1)
1.00
mm−1
Ve
effective volume
3300
mm3
Ie
effective length
57.0
mm
Ae
effective area
58.0
mm2
Amin
minimum area
55
mm2
m
mass of core half
≈8
g
handbook, halfpage
12.5
0.15
9.3
0.25
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 core half.
Core halves
Gapped cores are available on request. Clamping force 40 ±20 N.
AL
(nH)
µe
AIR GAP
(µm)
3C30
1800 ±25%
≈1450
≈0
EFD25-3C30
3C85
2200 ±25%
≈1780
≈0
EFD25-3C85
3C90
2200 ±25%
≈1780
≈0
EFD25-3C90
3F3
2000 ±25%
≈1600
≈0
EFD25-3F3
3F4
1000 ±25%
≈800
≈0
EFD25-3F4
GRADE
TYPE NUMBER
Properties of core sets under power conditions
B (mT) at
CORE LOSS (W) at
H = 250 A/m;
f = 25 kHz;
T = 100 °C
f = 25 kHz;
ˆ = 200 mT;
B
T = 100 °C
f = 100 kHz;
ˆ = 100 mT;
B
T = 100 °C
f = 400 kHz;
ˆ = 50 mT;
B
T = 100 °C
f = 1 MHz;
ˆ = 30 mT;
B
T = 100 °C
f = 3 MHz;
ˆ = 10 mT;
B
T = 100 °C
3C30
≥360
≤0.35
≤0.38
−
−
−
3C85
≥320
≤0.50
≤0.60
−
−
−
3C90
≥330
≤0.35
≤0.38
−
−
−
3F3
≥315
−
≤0.38
≤0.66
−
−
3F4
≥300
−
−
−
≤0.70
≤1.10
GRADE
1997 Nov 21
2
Philips Components
Product specification
EFD cores and accessories
EFD25
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-lead alloy (SnPb) plated
Maximum operating temperature
180 °C, “IEC 85” class H
Resistance to soldering heat
“IEC 68-2-20” , Part 2, Test Tb, method 1B, 350 °C, 3.5 s
Solderability
“IEC 68-2-20”, Part 2, Test Ta, method 1
handbook, full pagewidth
0
18 0.2
0
13.1
0.1
0.1
11.7 0
12.5 12 0
0.2
max
0
18 0.2
5
0.05
(16.4 min)
0
0.1
5.5 0 6.9 0.1
22.5
3.6
O 0.8
10
20
22.5
25.2 max
26.2 max
0.15
1.3 0
MGC343
Dimensions in mm.
Fig.2 EFD25 coil former; 10-pins.
Winding data for EFD25 coil former with 10-pins
NUMBER OF
SECTIONS
WINDING
AREA
(mm2)
MINIMUM
WINDING
WIDTH
(mm)
AVERAGE
LENGTH OF
TURN
(mm)
1
40.2
16.4
46.4
1997 Nov 21
3
TYPE NUMBER
CSH-EFD25-1S-10P
Philips Components
Product specification
EFD cores and accessories
EFD25
MOUNTING PARTS
General data
ITEM
REMARKS
FIGURE
stainless steel (CrNi); clamping force ≈30 N
Clip
handbook, halfpage
5
8
29 23.3
MGC344
4.5
Dimensions in mm.
Fig.3 EFD25 mounting clip.
1997 Nov 21
4
3
TYPE NUMBER
CLI-EFD25
Philips Components
Product specification
EFD cores and accessories
EFD25
DEFINITIONS
Data sheet status
Objective specification
This data sheet contains target or goal specifications for product development.
Preliminary specification
This data sheet contains preliminary data; supplementary data may be published later.
Product specification
This data sheet contains final product specifications.
Application information
Where application information is given, it is advisory and does not form part of the specification.
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. Philips customers using or selling these products for
use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such
improper use or sale.
PRODUCT STATUS DEFINITIONS
STATUS
INDICATION
DEFINITION
Prototype
These are products that have been made as development samples for the purposes of
technical evaluation only. The data for these types is provisional and is subject to change.
Design-in
These products are recommended for new designs.
Preferred
These products are recommended for use in current designs and are available via our
sales channels.
Support
These products are not recommended for new designs and may not be available through
all of our sales channels. Customers are advised to check for availability.
1997 Nov 21
5
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COD16
© Philips Electronics N.V. 1997
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