B66372A2000T001

EPCOS AG 2018. 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.
Ferrites and accessories
E 70/33/32
Core and accessories
Series/Type: B66371, B66372
Date: April 2018
2 4/18
Please read Cautions and warnings and
Important notes at the end of this document.
Delivery mode: single units
Magnetic characteristics (per set)
l/A = 0.22 mm
–1
l
e
= 149 mm
A
e
= 683 mm
2
A
min
= 676 mm
2
V
e
= 102000 mm
3
Approx. weight 514 g/set
Ungapped
* H = 250 A/m; f = 10 kHz; T = 100 °C
Gapped (A
L
values/air gaps examples)
The A
L
value in the table applies to a core set comprising one ungapped core (dimension g = 0 mm)
and one gapped core (dimension g > 0 mm).
Other A
L
values/air gaps and materials available on request – see Processing remarks on page 5.
Mate-
rial
A
L
value
nH
e
B
S
*
mT
P
V
W/set
Ordering code
N27 8850 +30/–20% 1530 320 < 19.00 (200 mT, 25 kHz, 100 °C) B66371G0000X127
N87 9700 +30/–20% 1700 320 < 9.50 (100 mT, 100 kHz, 100 °C) B66371G0000X187
N97 10000+30/–20% 1740 330 < 8.60 (100 mT, 100 kHz, 100 °C) B66371G0000X197
N95 13000+30/–20% 2260 330 < 11.30 (100 mT, 100 kHz, 25 °C)
< 9.00 (100 mT, 100 kHz, 100 °C)
B66371G0000X195
Material g
mm
A
L
value
approx.
nH
e
Ordering code
N27 1.500.05 655 113 B66371G1500X127
N87 2.000.05
2.500.05
4.00.05
520
435
200
90
75
35
B66371G2000X187
B66371G2500X187
B66371G4000X187
B66371Core
E 70/33/32
3 4/18
Please read Cautions and warnings and
Important notes at the end of this document.
Calculation factors (for formulas, see “E cores: general information”)
Validity range: K1, K2: 0.20 mm < s < 5.00 mm
K3, K4: 290 nH < A
L
< 2880 nH
Material Relationship between
air gap – A
L
value
Calculation of saturation current
K1 (25 °C) K2 (25 °C) K3 (25 °C) K4 (25 °C) K3 (100 °C) K4 (100 °C)
N27 903 0.789 1568 0.847 1470 0.865
N87 903 0.789 1485 0.796 1438 0.873
B66371Core
E 70/33/32

B66372A2000T001

Mfr. #:
Manufacturer:
EPCOS / TDK
Description:
Ferrite Cores & Accessories CF-E70-1S
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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