E 30/15/7
Core
■
Delivery mode: single units
B66319
Magnetic characteristics
(per set)
6
l/A
l
e
A
e
A
min
V
e
= 1.12 mm
–1
= 67 mm
= 60 mm
2
= 49 mm
2
= 4000 mm
3
Approx. weight
22 g/set
Ungapped
Material
N30
N27
N87
A
L
value
nH
3100 +30/–20%
1700 +30/–20%
1900 +30/–20%
P
e
2760
1510
1690
< 0.81 (200 mT, 25 kHz, 100 °C)
< 2.20 (200 mT, 100 kHz, 100 °C)
P
V
W/set
Ordering code
B66319G0000X130
B66319G0000X127
B66319G0000X187
Gapped
Material
g
mm
N27,
N87
0.10
r0.02
0.18
r0.02
0.34
r0.02
A
L
value
approx.
nH
460
300
195
P
e
Ordering code
** = 27 (N27)
**
= 87 (N87)
B66319G0100X1**
B66319G0180X1**
B66319G0340X1**
410
265
175
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).
Calculation factors
(for formulas, see
“E cores: general information”)
Material
Relationship between
air gap – A
L
value
K1 (25 °C)
N27
N87
Validity range:
90
90
K2 (25 °C)
– 0.708
– 0.708
Calculation of saturation current
K3 (25 °C)
156
154
K4 (25 °C)
– 0.847
– 0.796
K3 (100 °C) K4 (100 °C)
144
140
– 0.865
– 0.873
K1, K2: 0.10 mm < s < 2.00 mm
K3, K4: 560 nH < A
L
< 60 nH
Please read
Cautions and warnings
and
Important notes
at the end of this document.
2
09/06
E 30/15/7
Accessories
Coil former (magnetic axis horizontal or vertical)
Material:
GFR polyterephthalate (UL 94 V-0, insulation class to IEC 60085:
F max. operating temperature 155 °C), color code black
B66232A, B: Valox 420-SE0
®
>
E45329 (M)
@
, GE PLASTICS B V
B66232J: Pocan B4235
®
>
E245249 (M)
@
, LANXESS AG
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 Data Book 2007, chapter “Processing notes, 2.1”
Squared pins.
Yoke
Coil former
Version
Horizontal
Vertical
Sections
1
1
A
N
mm
2
90
90
l
N
mm
56
56
A
R
value Pins
P:
21
21
14
12
B66232B1114T001
B66232J1112T001
B66232A2010X000
Material: Stainless spring steel (0.4 mm)
Ordering code
B66232
Yoke (ordering code per piece, 2 are required)
Horizontal version
35,4
_
0,5
19,2
_
0,3
7,5+0,2
19,1
_
0,3
0,8
0,8
7,5+0,25
20 max.
3,5
_
0,5
2,6
_
0,1
8,9
_
0,2
1,6+0,1
8,9
_
0,2
8
14
0,7
6 x 5,08 = 30,48
31,4
_
0,5
Hole arrangement
View in
mounting direction
1
7
5,08
22,86
FEK0122-J
Please read
Cautions and warnings
and
Important notes
at the end of this document.
3
01/10
Ferrites and accessories
Cautions and warnings
Mechanical stress and mounting
Ferrite cores have to meet mechanical requirements during assembling and for a growing number
of applications. Since ferrites are ceramic materials one has to be aware of their special behavior
under mechanical load.
Just like any ceramic material, ferrite cores are brittle and sensitive to any shock, fast changing or
tensile load. Especially fast cooling rates under ultrasonic cleaning, high static and cyclic loads can
cause cracks or failure of the ferrite cores.
For detailed information see Data Book 2007, chapter "General - Definitions, 8.1".
Effects of core combination on A
L
value
Stresses in the core affect not only the mechanical but also the magnetic properties. It is apparent
that the initial permeability is dependent on the stress state of the core. The higher the stresses are
in the core, the lower the value for the initial permeability. Thus, the embedding medium should offer
the greatest possible elasticity.
For detailed information see Data Book 2007, chapter "General - Definitions, 8.2".
Heating up
Ferrites can run hot during operation at higher flux densities and higher frequencies.
NiZn-materials
The magnetic properties of NiZn-materials can change irreversibly when exposed to strong
magnetic fields.
Processing notes
– The start of the winding process should be soft. Otherwise, the flanges may be destroyed.
– Excessive winding forces may damage the flanges or squeeze the tube so that the cores can no
longer be mounted.
– Excessive soldering time at high temperature (>300 °C) may affect coplanarity or pin
arrangement.
– Not following the processing notes for soldering of the J-leg terminals may cause solderability
problems at the transformer because of contamination with tin oxide (SnO) from the tin bath or
burned insulation from the wire. For detailed information see Data Book 2007, chapter
"Processing notes, 2.2".
– The dimensions of the pin hole arrangement are fixed and should be understood as an ideal
recommendation for drilling the printed circuit board. In order to avoid problems when mounting
the transformer, customers should make allowances for manufacturing tolerances in the drilling
and pick-and-place processes by increasing the diameter of the pin holes.
5
01/10
Test/Measurement
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