ETD Cores (9578444502)
78 ETD CORE SET
Closed Magnetic Circuit
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Part Number: 9578444502
78 ETD CORE SET
ETD cores have been designed to make optimum use of a given volume of ferrite material for maximum throughput power, specifically for forward converter transformers. 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. ETD cores are used mainly in switched-mode power supplies and permit off-line designs where IEC and VDE isolation requirements must be met.
ETD cores can be supplied with the center post gapped to a mechanical dimension or an ALvalue.
Weight indicated is per pair or set.
Weight: 94 (g)
|Dim||mm||mm tol||nominal inch||inch misc.|
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.
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||3
|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.
Material Safety Data Sheet (MSDS)
Click here to download Complex Permeability vs. Frequency (CSV)
Ferrite Material Constants
Storage and Operating Temperature
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