EFD Bobbins
EFD bobbins for low profile designs where total assembly height is the binding constraint.
What This Series Covers
EFD bobbins for low profile designs where total assembly height is the binding constraint. There are 20 published part numbers, and every one lists the plastic, the pin count and the pin geometry where the drawing states them.
If a geometry in this series is close but not exact, the tool room can modify pin counts, section splits and mounting features on a new tool rather than forcing a redesign around a stock part.
Materials Used In This Series
Counted from the published data for these 20 parts.
| Phenolic; Pin Material: CP Wire | 20 parts |
|---|
All Parts In This Series
EFD15 Bobbin, 4+2 Pins, 1 Section4+2 pinsPhenolic; Pin Material: 
EFD15 Bobbin, 4+4 Pins, 1 Section4+4 pinsPhenolic; Pin Material: 
EFD20 Bobbin, 4+4 Pins, 1 Section4+4 pinsPhenolic; Pin Material: 
EFD25 Bobbin, 5+5 Pins, 1 Section5+5 pinsPhenolic; Pin Material: 
EFD25 Bobbin, 5+5 Pins, 4 Sections5+5 pinsPhenolic; Pin Material: 
EFD25 Bobbin, 5+5 Pins, 6 Sections5+5 pinsPhenolic; Pin Material: 
EFD25 Bobbin, 6+6 Pins, 4 Sections6+6 pinsPhenolic; Pin Material: 
EFD25 Bobbin, 7+7 Pins, 1 Section7+7 pinsPhenolic; Pin Material: 
EFD25 Bobbin, 8+9 Pins, 1 Section8+9 pinsPhenolic; Pin Material: 
EFD30 Bobbin, 6+6 Pins, 1 Section6+6 pinsPhenolic; Pin Material: 
SMD EFD10 Bobbin, 4+4 Pins, 1 Section4+4 pinsPhenolic; Pin Material: 
SMD EFD15 Bobbin, 4+4 Pins, 1 section4+4 pinsPhenolic; Pin Material: 
SMD EFD15 Bobbin, 5+5 Pins, 1 Section5+5 pinsPhenolic; Pin Material: 
SMD EFD15 Bobbin, 6+6 Pins, 1 Section6+6 pinsPhenolic; Pin Material: 
SMD EFD20 Bobbin, 5+5 Pins, 1 Section, Type L5+5 pinsPhenolic; Pin Material: 
SMD EFD20 Bobbin, 5+5 Pins, 1 Section5+5 pinsPhenolic; Pin Material: 
SMD EFD20 Bobbin, 5+5 Pins, 1 Section, Type C4+4 pinsPhenolic; Pin Material: 
SMD EFD25 Bobbin, 5+5 Pins, 1 Section5+5 pinsPhenolic; Pin Material: 
SMD EFD25 Bobbin, 6+6 Pins, 1 Section6+6 pinsPhenolic; Pin Material: 
SMD EFD6.5 Bobbin, 3+3 Pins, 1 Section3+3 pinsPhenolic; Pin Material: Selection Table
Every published part in this series with its geometry side by side.
Questions About EFD Bobbins
How many efd bobbins are published
20 part numbers, listed above with material and pin geometry.
What if my size is not in the list
Send the drawing. Tool design and injection moulding are in-house services, so a size that is not in the catalogue is quoted as a tooling job rather than turned away.
Which plastics are used in this series
Phenolic; Pin Material: CP Wire.
Can you supply the matching core
Yes. Silicon steel amorphous and nanocrystalline cores are in the same catalogue and complete wound components can be quoted.
Do you provide drawings and CAD
Dimensioned drawings are sent as PDF on request. CAD files are released on request via WhatsApp or email rather than as an open download.
Send Your Part List
Catalogue parts are quoted from existing tooling. Anything outside the list is quoted from your drawing.