Ferrites and accessories
ELP 38/8/25 with I 38/4/25
Cores (with and without clamp recess)
Series/Type: B66289G, B66289K, B66459G, B66459K
Date: 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) B66289
Core set EELP 38
ELP 38/8/25
Combination: ELP 38/8/25 with ELP 38/8/25
To IEC 62317-9
Delivery mode: single units
Magnetic characteristics (per set)
1
l/A= 0.27 mm
l = 52.4 mm
e
2
A = 194 mm
e
2
A = 192 mm
min
3
V = 10200 mm
e
Approx. weight 52 g/set
Ungapped
Material A value B * P Ordering code
L e S V
nH mT W/set (per piece)
N49 4850 25% 1040 250 < 2.60 ( 50 mT, 500 kHz, 100 C) B66289G0000X149
N92 5400 25% 1160 350 < 6.65 (200 mT, 100 kHz, 100 C) B66289G0000X192
N87 7200 25% 1550 300 < 6.05 (200 mT, 100 kHz, 100 C) B66289G0000X187
N97 7400 25% 1590 310 < 5.15 (200 mT, 100 kHz, 100 C) B66289G0000X197
* H = 250 A/m; f = 10 kHz; T = 100 C
Gapped (A values/air gaps examples)
L
Material g A value Ordering code
L e
approx.
mm nH
N87 0.12 0.02 1700 370 B66289G0120X187
0.60 0.05 400 90 B66289G0600X187
Other A values/air gaps and materials available on request see Processing remarks on page 6.
L
Calculation factors (for formulas, see E cores: general information)
EELP 38:
Material Relationship between Calculation of saturation current
air gap A value
L
K1 (25 C) K2 (25 C) K3 (25 C) K4 (25 C) K3 (100 C) K4 (100 C)
N87 302 0.815 522 0.796 466 0.873
Validity range: K1, K2: 0.10 mm < s < 2.00 mm
K3, K4: 180 nH < A < 1500 nH
L
Please read Cautions and warnings and
2 5/17
Important notes at the end of this document.