Part Number: 9578606002
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: 274 (g)
Dim | mm | mm tol | nominal inch | inch misc. |
A | 59.8 | ± 1.00 | 2.354 | _ |
B | 30 | ± 0.25 | 1.181 | _ |
C | 21.7 | ± 0.40 | 0.854 | _ |
D | 22.55 | ± 0.25 | 0.888 | _ |
E | 43.6 | min | 1.717 | min |
F | 21.7 | ± 0.40 | 0.854 | _ |
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) | 6650 ±25% |
Ae(cm2) | 3.57 |
Σl/A(cm-1) | 3.9 |
le(cm) | 13.87 |
Ve(cm3) | 49.52 |
Amin(cm2) | 3.23 |
AL value is measured at 1 kHz, B < 10 gauss