Ferrites and accessories
ELP 38/8/25 with I 38/4/25
Cores (with and without clamp recess)
Series/Type:
Date:
B66289G, B66289K, B66459G, B66459K
May 2017
EPCOS AG 2017. Reproduction, publication and dissemination of this publication, enclosures hereto and the
information contained therein without EPCOS’ prior express consent is prohibited.
EPCOS AG is a TDK Group Company.
ELP 38/8/25
Core (with clamp recess)
Core set EELP 38
Combination: ELP 38/8/25 with ELP 38/8/25
■
To IEC 62317-9
■
Delivery mode: single units
B66289
ELP 38/8/25
Magnetic characteristics
(per set)
Σl/A
l
e
A
e
A
min
V
e
= 0.27 mm
–1
= 52.4 mm
= 194 mm
2
= 192 mm
2
= 10200 mm
3
Approx. weight
52 g/set
Ungapped
Material A
L
value
nH
N49
N92
N87
N97
4850
±25%
5400
±25%
7200
±25%
7400
±25%
μ
e
1040
1160
1550
1590
B
S
*
mT
250
350
300
310
P
V
W/set
Ordering code
(per piece)
< 2.60 ( 50 mT, 500 kHz, 100 °C) B66289G0000X149
< 6.65 (200 mT, 100 kHz, 100 °C) B66289G0000X192
< 6.05 (200 mT, 100 kHz, 100 °C) B66289G0000X187
< 5.15 (200 mT, 100 kHz, 100 °C) B66289G0000X197
* H = 250 A/m; f = 10 kHz; T = 100 °C
Gapped
(A
L
values/air gaps examples)
Material
g
mm
N87
0.12 ±0.02
0.60 ±0.05
A
L
value
approx.
nH
1700
400
μ
e
Ordering code
370
90
B66289G0120X187
B66289G0600X187
Other A
L
values/air gaps and materials available on request – see Processing remarks on page 6.
Calculation factors
(for formulas, see
“E cores: general information”
)
EELP 38:
Material
Relationship between
air gap – A
L
value
K1 (25 °C)
N87
Validity range:
302
K2 (25 °C)
–0.815
Calculation of saturation current
K3 (25 °C)
522
K4 (25 °C)
–0.796
K3 (100 °C) K4 (100 °C)
466
–0.873
K1, K2: 0.10 mm < s < 2.00 mm
K3, K4: 180 nH < A
L
< 1500 nH
Please read
Cautions and warnings
and
Important notes
at the end of this document.
2
5/17
ELP 38/8/25 with I 38/4/25
Core (with clamp recess)
Core set EILP 38
Combination:
ELP 38/8/25 with I 38/4/25
■
To IEC 62317-9
■
Delivery mode: single units
B66289
ELP 38/8/25
I 38/4/25
Magnetic characteristics
(per set)
Σl/A
l
e
A
e
A
min
V
e
= 0.22 mm
–1
= 43.6 mm
= 194 mm
2
= 192 mm
2
= 8460 mm
3
Approx. weight
44 g/set
Ungapped
Mate- A
L
value
μ
e
nH
rial
N49
N92
N87
N97
5700
±25%
6200
±25%
8300
±25%
8400
±25%
B
S
*
mT
P
V
W/set
Ordering code
(per piece)
1000 250
1110 350
1450 300
1500 310
< 2.20 ( 50 mT, 500 kHz, 100 °C) B66289G0000X149 (ELP core)
B66289K0000X149 (I core)**
< 5.30 (200 mT, 100 kHz, 100 °C) B66289G0000X192 (ELP core)
B66289K0000X192 (I core)**
< 5.15 (200 mT, 100 kHz, 100 °C) B66289G0000X187 (ELP core)
B66289K0000X187 (I core)**
< 4.40 (200 mT, 100 kHz, 100 °C) B66289G0000X197 (ELP core)
B66289K0000X197 (I core)**
* H = 250 A/m; f = 10 kHz; T = 100 °C
** Plate-type tool
Other A
L
values/air gaps and materials available on request – see Processing remarks on page 6.
Calculation factors
(for formulas, see
“E cores: general information”
)
EILP 38:
Material
Relationship between
air gap – A
L
value
K1 (25 °C)
N87
Validity range:
328
K2 (25 °C)
–0.788
Calculation of saturation current
K3 (25 °C)
541
K4 (25 °C)
–0.796
K3 (100 °C) K4 (100 °C)
477
–0.873
K1, K2: 0.10 mm < s < 2.00 mm
K3, K4: 180 nH < A
L
< 1500 nH
Please read
Cautions and warnings
and
Important notes
at the end of this document.
3
5/17
ELP 38/8/25
Core (without clamp recess)
Core set EELP 38
Combination: ELP 38/8/25 with ELP 38/8/25
■
To IEC 62317-9
■
Delivery mode: single units
B66459
ELP 38/8/25
Magnetic characteristics
(per set)
Σl/A
l
e
A
e
A
min
V
e
= 0.27 mm
–1
= 52.4 mm
= 194 mm
2
= 192 mm
2
= 10200 mm
3
Approx. weight
52 g/set
Ungapped
Material A
L
value
nH
N49
N92
N87
N97
4850
±25%
5400
±25%
7200
±25%
7400
±25%
μ
e
1040
1160
1550
1590
B
S
*
mT
250
350
300
310
P
V
W/set
Ordering code
(per piece)
< 2.60 ( 50 mT, 500 kHz, 100 °C) B66459G0000X149
< 6.65 (200 mT, 100 kHz, 100 °C) B66459G0000X192
< 6.05 (200 mT, 100 kHz, 100 °C) B66459G0000X187
< 5.15 (200 mT, 100 kHz, 100 °C) B66459G0000X197
* H = 250 A/m; f = 10 kHz; T = 100 °C
Other A
L
values/air gaps and materials available on request – see Processing remarks on page 6.
Calculation factors
(for formulas, see
“E cores: general information”
)
EELP 38:
Material
Relationship between
air gap – A
L
value
K1 (25 °C)
N87
Validity range:
302
K2 (25 °C)
–0.815
Calculation of saturation current
K3 (25 °C)
522
K4 (25 °C)
–0.796
K3 (100 °C) K4 (100 °C)
466
–0.873
K1, K2: 0.10 mm < s < 2.00 mm
K3, K4: 180 nH < A
L
< 1500 nH
Please read
Cautions and warnings
and
Important notes
at the end of this document.
4
5/17
ELP 38/8/25 with I 38/4/25
Core (without clamp recess)
Core set EILP 38
Combination:
ELP 38/8/25 with I 38/4/25
■
To IEC 62317-9
■
Delivery mode: single units
B66459
ELP 38/8/25
I 38/4/25
Magnetic
characteristics
(per set)
Σl/A
l
e
A
e
A
min
V
e
= 0.22 mm
–1
= 43.6 mm
= 194 mm
2
= 192 mm
2
= 8440 mm
3
Approx. weight
44 g/set
Ungapped
Mate- A
L
value
μ
e
nH
rial
N49
N92
N87
N97
5700
±25%
6200
±25%
8300
±25%
8400
±25%
B
S
*
mT
P
V
W/set
Ordering code
(per piece)
1000 250
1110 350
1450 300
1500 310
< 2.20 ( 50 mT, 500 kHz, 100 °C) B66459G0000X149 (ELP core)
B66459K0000X149 (I core)**
< 5.30 (200 mT, 100 kHz, 100 °C) B66459G0000X192 (ELP core)
B66459K0000X192 (I core)**
< 5.15 (200 mT, 100 kHz, 100 °C) B66459G0000X187 (ELP core)
B66459K0000X187 (I core)**
< 4.40 (200 mT, 100 kHz, 100 °C) B66459G0000X197 (ELP core)
B66459K0000X197 (I core)**
* H = 250 A/m; f = 10 kHz; T = 100 °C
** Plate-type tool
Other A
L
values/air gaps and materials available on request – see Processing remarks on page 6.
Calculation factors
(for formulas, see
“E cores: general information”
)
EILP 38:
Material
Relationship between
air gap – A
L
value
K1 (25 °C)
N87
Validity range:
328
K2 (25 °C)
–0.788
Calculation of saturation current
K3 (25 °C)
541
K4 (25 °C)
–0.796
K3 (100 °C) K4 (100 °C)
477
–0.873
K1, K2: 0.10 mm < s < 2.00 mm
K3, K4: 180 nH < A
L
< 1500 nH
Please read
Cautions and warnings
and
Important notes
at the end of this document.
5
5/17
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