TANGDA EPC13 core Bobbin 2+5 pin 10p DIP EPC magnetic core+skeleton PC40 soft ferrite cores Transformers horizontal 4 groove TANGDA EPC13 core Bobbin 2+5 pin 10p DIP EPC magnetic core+skeleton PC40 soft ferrite cores Transformers horizontal 4 groove. Sale price : $13.73 Category : Home Improvement