Performance Characteristics:  Using Fe-based nanocrystalline material and toroidal core, with high saturation induction  density and permeability and low loss, it is widely used for high frequency main transformer,  magnetic amplifier and choking coil of push-pull or half-bridge and full-bridge switching  power supply.   Performance: Part of specification :customized sizes are available . 15/23*5 18.5/27*8 20/28*15 25/33*12 31/39*9 15/23*8 18.5/28.5*14 20/30*10 25/40*10 31/40*10 15/24*15 18.6/22*11 20/30*12 25/40*12.5 32.5/37.5*5 15/24*6 18/22*3.2 20/30*15 25/40*15 32.5/37.8*6 15/24*6.5 18/23*10 20/30*15 25/40*20 32/37.5*3.2 15/25*10 18/23.5*10 20/30*20 25/40.5*12.5 32/38*6.5 15/25*10.5 18/24*10 20/30*6.5 25/43*25 32/38*8 15/25*13 18/24*10 20/30*8 26.2/32.2*10 32/40*15 15/25*13 18/24*11 20/31.5*9 26.7/48*10 32/41*15 15/78*30 18/24*12 20/32*10 26/31*6.5 32/44*20 16.45/22*0.35 18/24*5.5 20/32*10 26/32*3.2 32/44*6.5 16.5/23.5*15 18/25*12 20/32*15 26/32*5 32/50*10 16.7/11.6*15.4 18/26*10 20/37*18 26/38*12 32/50*13 16/21*10 18/28*10 21/29*10 27.5/30.5*4 32/50*15 16/23*10 18/28*15 21/29.4*5 27.5/33.5*4 32/50*20 16/23*15 18/28.5*10 21/30*6.5 27/38*8 32/52*16 16/23*4 18/30*15 21/30*7 27/46*10 32/62*24 16/23*6 19.6/25.4*3.5 22/27*4 27/46*20 33.5/39.5*4 16/23*8 19/22*11 22/28*4 27/46*25 33.5/42*12 16/24*7.5 19/23*10 22/28*5 28/32.5*3 33.8/39.8*4 16/25*10 19/25*10 22/30*5 28/34*5 34/36*6 16/25*10 19/25.5*2.5 22/32*3.2 28/34*8 34/37*4 16/25*8 19/26*10 23.5/33*44 28/43.5*12 34/41*8 16/26*10 19/26*10 23/29*12 29/16*10 34/42*12 16/26*20 19/26*12 23/29*5 29/46*25 34/43*15 16/26*5 19/27*12 23/33*10 30/37*4 34/44*8