In general BOBBIN can be classified into two categories: vertical and horizontal. They can be further categorized into skeleton-line (DIP) and skeleton patch (SMD) based on the usage of the pins of BOBBIN.
In addition, each category can be classified based on how the core transformer (or core) is used, such as EI, EE, EF, EPC, ER, RM, PQ, UU and other models, and each model can in turn be classified based on its core size.
To speed up your search on a specific product, we recommend that you follow the above steps.