Bobbins & Coil Forms

Lodestone Pacific and Nanjida of Dongguan, China have created a Strategic Partnership that creates production efficiencies, ensures superior quality and World-Wide, World-Class customer service.

Serving the Transformer and Magnetic Core Material industry for over 30 years, Lodestone Pacific has a wide variety of Transformer Bobbins and wire winding coil forms that are  RoHs, REACH and VDE compliant bobbins for through hole and surface mount applications. Molded at our partner factory in China, these bobbins are high quality, made from UL traceable materials, have very competitive prices and are available from warehouses in North America, China, Hong Kong and Europe.

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Available Transformer Bobbin Shapes

EE Bobbins • EF Bobbins

EER Bobbins • ETD Bobbins

PQ Bobbins • EFD Bobbins

EFD Bobbins • ER Bobbins

RM Bobbins • RM Bobbins

EP Bobbins • EIM Bobbins

• US & Metric Transformer Bobbins for

Lamination and VDE Transformers •

Shrouded Bobbins

60 HZ Bobbins


PQ Bobbins

new bobbins

Ferrite Bobbins

USLAM_2 copy

Transformer Bobbins

Big Bobbins1

Custom Bobbins

East Coast Sales


East Coast CSR


West Coast CSR