FERROXCUBE EP20

FERROXCUBE
DATA SHEET
EP20
EP cores and accessories
Supersedes data of September 2004
2008 Sep 01
Ferroxcube
EP cores and accessories
EP20
CORE SETS
Effective core parameters
SYMBOL
PARAMETER
VALUE
UNIT
Σ(I/A)
core factor (C1)
0.520
mm−1
Ve
effective volume
3230
mm3
Ie
effective length
41.1
mm
Ae
effective area
78.7
mm2
Amin
minimum area
60.8
mm2
m
mass of set
≈27
g
8.8 ± 0.25
handbook, halfpage
15
± 0.35 4.5
± 0.2
;;;
;;;
;;;
16.5 ± 0.4
21.4
± 0.2
14.4
± 0.3
MBG178
24 ± 0.5
Dimensions in mm.
Fig.1 EP20 core set.
Core sets for general purpose transformers and power applications
Clamping force for AL measurements, 60 ±20 N.
GRADE
3C81
AL
(nH)
µe
160 ±3%
≈ 67
3C94
3C96
2008 Sep 01
≈ 790
TYPE NUMBER
EP20-3C81-E160
250 ±3%
≈ 104
≈ 460
EP20-3C81-A250
315 ±3%
≈ 131
≈ 350
EP20-3C81-A315
400 ±3%
≈ 166
≈ 260
EP20-3C81-A400
EP20-3C81-A630
630 ±5%
3C91
TOTAL AIR GAP
(µm)
≈ 262
≈ 150
4900 ±25%
≈ 2040
≈0
EP20-3C81
4900 ±25%
≈ 2040
≈0
EP20-3C91
160 ±3%
≈ 67
≈ 790
EP20-3C94-E160
250 ±3%
≈ 104
≈ 460
EP20-3C94-A250
315 ±3%
≈ 131
≈ 350
EP20-3C94-A315
400 ±3%
≈ 166
≈ 260
EP20-3C94-A400
630 ±5%
≈ 262
≈ 150
EP20-3C94-A630
4435 ±25%
≈ 1840
≈0
EP20-3C94
3850 ±25%
≈ 1600
≈0
EP20-3C96
712
Ferroxcube
EP cores and accessories
AL
(nH)
µe
160 ±3%
≈ 67
GRADE
3F3
EP20
TOTAL AIR GAP
(µm)
TYPE NUMBER
≈ 790
EP20-3F3-E160
250 ±3%
≈ 104
≈ 460
EP20-3F3-A250
315 ±3%
≈ 131
≈ 350
EP20-3F3-A315
400 ±3%
≈ 166
≈ 260
EP20-3F3-A400
≈ 262
≈ 150
EP20-3F3-A630
≈ 1480
≈0
630 ±5%
3550 ±25%
EP20-3F3
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 = 100 kHz;
ˆ = 200 mT;
B
T = 100 °C
f = 400 kHz;
ˆ = 50 mT;
B
T = 100 °C
3C81
≥315
≤ 0.75
−
−
−
3C91
≥315
−
≤
GRADE
0.2(1)
≤
1.3(1)
−
3C94
≥320
−
≤ 0.25
≤ 1.6
−
3C96
≥340
−
≤ 0.2
≤ 1.3
≤ 0.5
3F3
≥315
−
≤ 0.36
−
≤ 0.62
Properties of core sets under power conditions (continued)
B (mT) at
CORE LOSS (W) at
H = 250 A/m;
f = 25 kHz;
T = 100 °C
f = 500 kHz;
ˆ = 50 mT;
B
T = 100 °C
f = 500 kHz;
ˆ = 100 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
3C81
≥315
−
−
−
−
3C91
≥315
−
−
−
−
3C94
≥320
−
−
−
−
3C96
≥340
≤ 1.0
−
−
−
3F3
≥315
−
−
−
−
GRADE
Note
1. Measured at 60 °C.
2008 Sep 01
713
Ferroxcube
EP cores and accessories
EP20
COIL FORMER
General data
PARAMETER
SPECIFICATION
Coil former material
phenolformaldehyde (PF), glass-reinforced, flame retardant in accordance with
“UL 94V-0” ; UL file number E41429(M)
Pin material
copper-clad steel, tin (Sn) 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
13.9 ±0.1
15.9 ±0.1
0
2.65−0.1
1+0.15
0
12.5 ±0.1
9.2 ±0.1
+0.05
∅10.25 −0.15
1.5 ±0.1
17.78
0.6
± 0.1
5 ±0.5
0.5 ±0.02
5.08
20.32 ±0.05
CBW623
17.78 ±0.05
25.1 ±0.2
21.9 ±0.2
Dimensions in mm.
Fig.2 EP20 coil former: 10-pins.
Winding data and area product for 10-pins EP20 coil former
NUMBER OF
SECTIONS
MINIMUM
WINDING
AREA
(mm2)
NOMINAL
WINDING
WIDTH
(mm)
AVERAGE
LENGTH OF
TURN
(mm)
AREA
PRODUCT
Ae x Aw
(mm4)
TYPE NUMBER
1
40.3
12.4
39.4
3170
CSH-EP20-1S-10P-T
2
2 x 19.0
2 x 5.95
39.4
2 x 1500
CSH-EP20-2S-10P-T
2008 Sep 01
714
Ferroxcube
EP cores and accessories
EP20
MOUNTING PARTS
General data
ITEM
REMARKS
FIGURE
TYPE NUMBER
Clasp
steel, tin (Sn) plated (thickness 3-5 microns)
3
CLA-EP20-Z
Spring
copper-tin alloy (CuSn), tin (Sn) plated
4
SPR-EP20-Z
26.5
5.2 ± 0.15
6.5
± 0.1
23.3
3.5
1.8
21.2
± 0.15
18.2
± 0.1
5.5
± 0.1
4.2
25.4 ± 0.1
0.4
12
± 0.1
5.5 ± 0.1
MFP176
12 ± 0.1
MFP177
Dimensions in mm.
Dimensions in mm.
Fig.3 Mounting clasp CLA-EP20.
2008 Sep 01
Fig.4 Mounting spring SPR-EP20.
715
Ferroxcube
EP cores and accessories
EP20
DATA SHEET STATUS DEFINITIONS
DATA SHEET
STATUS
PRODUCT
STATUS
DEFINITIONS
Preliminary
specification
Development
This data sheet contains preliminary data. Ferroxcube reserves the right to
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
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.
2008 Sep 01
716