EER Cores (9578261802)
78 EER CORE SET
78 Material
Inductive Components
Closed Magnetic Circuit
Printer Friendly Data Sheet
Check Stock
Part Number: 9578261802
78 EER CORE SET
EER cores, similar to ETD cores, have been designed to make optimum use of a given volume of ferrite material for maximum throughput power. The structure, which includes a round center post, approaches a nearly uniform cross-sectional area throughout the core and provides a winding area that minimizes winding losses.
EER cores can be supplied with the center post gapped to a mechanical dimension or an ALvalue.
Weight indicated is per pair or set.
Weight: 11.2 (g)
Dim | mm | mm tol | nominal inch | inch misc. |
A | 25.5 | ± 0.50 | 1.004 | _ |
B | 9.3 | ± 0.15 | 0.366 | _ |
C | 7.5 | ± 0.25 | 0.295 | _ |
D | 6.4 | ± 0.15 | 0.252 | _ |
E | 19.8 | min | 0.78 | min |
F | 7.5 | ± 0.25 | 0.295 | _ |
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) | 1800 ±25% |
Ae(cm2) | 0.434 |
Σl/A(cm-1) | 11.1 |
le(cm) | 4.8 |
Ve(cm3) | 2.083 |
Amin(cm2) | 0.425 |
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:
RFID Rods
Toroids
Mated Parts
78 Material Characteristics
Property | Unit | Symbol | Value |
Initial Permeability @ B < 10 gauss | µi | 2300 | |
Flux Density @ Field Strength | Gauss Oersted |
B H |
4800 5 |
Residual Flux Density | Gauss | Br | 1500 |
Coercive Force | Oersted | Hc | 0.20 |
Loss Factor @ Frequency | 10 -6 MHz |
Tan δ/ µi | 3 0.1 |
Temperature Coefficient of Initial Permeability (20 -70°C) | %/°C | 1.0 | |
Curie Temperature | °C | Tc | >200 |
Resistivity | ohm-cm | ρ | 200 |
**** 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.
Material Safety Data Sheet (MSDS)
Click here to download Complex Permeability vs. Frequency (CSV)
Ferrite Material Constants
Storage and Operating Temperature
Printer Friendly Data Sheet - Download as pdf file