... )Light weight A Series toroidal coresCores can be manufactured in material thickness 0.35mm, 0.30mm, 0.27mm, 0.23mm, 0 ... the SB cores are very similar to traditional toroidal cores. Material thickness 0.20mm, 0.23mm, 0.27mm, 0.30mm and ... cores, the Bm values are relatively lower because it is recycle material.NB Series toroidal coresNB series toroidal cores are developed by ...