Planar Cores (7878400221)
Part Number: 7878400221
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.
Weight: 4.1 (g)
|Dim||mm||mm tol||nominal inch||inch misc.|
AL value is measured at 1 kHz, B < 10 gauss.
A MnZn ferrite specifically designed for power applications for frequencies up to 200 kHz and low loss inductive applications to 500 kHz.
Available in 78 material:
78 Material Characteristics
|Initial Permeability @ B < 10 gauss||µi||2300|
|Flux Density @ Field Strength||Gauss
|Residual Flux Density||Gauss||Br||1500|
|Loss Factor @ Frequency||10 -6
|Tan δ/ µi||4.5
|Temperature Coefficient of Initial Permeability (20 -70°C)||%/°C||1.0|
**** Characteristic curves are measured on standard Toroids (18/10/6 mm) at 25°C and 10 kHz unless otherwise indicated. Impedance characteristics are measured on standard shield beads (3.5/1.3/6.0 mm) unless otherwise indicated.