Nominal dimensions -- bold type millimeters, italic type inches.
| Bobbin Part # | E-Core Set | A | B | C | D | L | G | Flange |
|---|---|---|---|---|---|---|---|---|
| EB-188 | EA-77-188 | 13.6/0.535 | 13.6/0.535 | 5.21/0.205 | 5.21/0.205 | 10.7/0.420 | 0.635/0.025 | 1 |
| EB-250 | EA-77-250 | 18.8/0.74 | 18.8/0.74 | 6.73/0.265 | 6.73/0.265 | 12.1/0.475 | 0.889/0.035 | 1 |
| EB-375 | EA-77-375 | 22.0/0.865 | 22.0/0.865 | 9.78/0.385 | 9.78/0.385 | 17.3/0.680 | 0.813/0.032 | 1 |
| EB-500 | EA-77-500 | 27.9/1.100 | 27.9/1.100 | 13.0/0.510 | 13.0/0.510 | 20.2/0.796 | 0.813/0.032 | 1 |
| EB-625 | EA-77-625 | 34.8/1.370 | 29.9/1.165 | 16.3/0.640 | 12.4/0.490 | 29.2/1.150 | 1.52/0.060 | 2 |