Planar Cores (7878400121)

Part Number: 7878400121

78 PLANAR EI CORE SET

Planar EE and EI cores, with their low profile are suitable for board level installation allowing assembly without the need for plastic coilformers and can also allow windings integrated into multi-level PCBs. Planar ER cores with their low mass and low profile are suitable for Surface Mount installations in low power filter and transformer applications.

Planar EE, ER and EI cores can be supplied with the center post gapped to a mechanical dimension, or an AL value.

Catalog Drawing
3D Model

Weight: 1.1 (g)

Dimmmmm tolnominal inchinch misc.
A14± 0.300.551_
B3.5± 0.100.138_
C5± 0.150.197_
D1.9min0.075min
E10.52min0.414min
F3± 0.100.118_
G1.8± 0.100.071_

Chart Legend
Σl/A  :  Core Constant,    le :  Effective Path Length,    Ae :  Effective Cross-Sectional Area,    Ve :  Effective Core Volume
AL :  Inductance Factor  
Explanation of Part Numbers: Digits 1 & 2 = product class and 3 & 4 = material grade.

Electrical Properties
AL(nH)1440 ±25%
Ae(cm2)0.152
Σl/A(cm-1)10.9
le(cm)1.66
Ve(cm3)0.252
Amin(cm2)0.15

AL value is measured at 1 kHz, B < 10 gauss.

Fair-Rite Products Corp.     One Commercial Row, Wallkill, New York 12589-0288
888-324-7748      845-895-2055      Fax: 845-895-2629      ferrites@fair-rite.com      www.fair-rite.com