FAIR-RITE0431184751Ferrite Core

The Fair-Rite Oval Snap-It 31 material assemblies are controlled for impedances only. Minimum impedance values are specified for the positive marked frequencies. The minimum impedance is typically the listed impedance less 20%.

Single-turn impedance tests for 31, 43 and 46 material cores are performed on the E4991A or HP4291B impedance analyzer

61 material parts are tested on the E4991A or HP4291B impedance analyzer

75 material parts are tested on the E4990A impedance analyzer

Cores are tested with the shortest practical wire length