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Based on traditional scrap-less laminated E cores, ferrite E cores are one of the most well known shapes in the industry. They are easy to assemble and wind, using industry standard mounting hardware and bobbins, and they are very affordable. E cores are used in power transformers as well as in broadband transformers. E cores can also be used in power inductors, and differential inductors.
Dimensions of E Cores with Rectangular Cross Section
(based upon Table 2 of IMA Standard Specifications for E, U and I Cores)
| SIZE | TOL | D1 | D2 | D3 | H1 | H2 | w | R1 | R2 | ||||||||
| mm | in | mm | in | mm | in | mm | in | mm | in | mm | in | mm | in | mm | in | ||
| E13/4 | MIN | 12 | 0.48 | 8.9 | 0.35 | 3.4 | 0.13 | 6.3 | 0.25 | 4.5 | 0.177 | 3.4 | 0.13 | – | – | – | – |
| MAX | 13 | 0.52 | 9.5 | 0.37 | 3.7 | 0.15 | 6.5 | 0.26 | 4.8 | 0.189 | 3.7 | 0.15 | 1 | .039 | 0.3 | 0.01 | |
Established in 1951, Dexter Magnetic Technologies has proven to be the ultimate industry leader worldwide of magnetic assemblies and products in fabrication, design and specification.
