2set EI28 13+13pins 5+5pins 6+6pins PC40 Ferrite Cores and bobbin 28mm
We use the Polyethylene foamed sheet to protect the ferrite cores and bobbins, then use the air column, don't worry!
EI28 Ferrite Cores
AL=3500±25%
"E" core size(mm):
A: 28.0±0.6
B: 16.7±0.3
C: 10.7±0.3
D: 7.3±0.3
E: 18.6min
F: 12.2±0.3
I: 3.5±0.2
each set =2 ferrite halves + 1 bobbin