ER Bobbins
ER bobbins for round centre leg ER cores in horizontal and vertical mounting.
What This Series Covers
ER bobbins for round centre leg ER cores in horizontal and vertical mounting. There are 45 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 45 parts.
| Phenolic | 31 parts |
|---|---|
| GFN; Pin Material: CP Wire | 3 parts |
| Phenolic PM9630; Pin Material: Phos Bronze | 3 parts |
| GFN; Pin Material: CP Wire | 2 parts |
| LCP E4008; Pin Material: Phos Bronze | 2 parts |
| LCP E4008; Pin Material: Phos Bronze | 1 parts |
| Phenolic; Pin Material: Phos Bronze | 1 parts |
| Phenolic PM9630; Pin Material: Phos Bronze | 1 parts |
All Parts In This Series
ER11.5 Bobbin, Vertical , 6+6 Pins, L Lead6+6 pinsGFN; Pin Material: CP Wir
ER11.5 Bobbin, Vertical, 4+4 Pins, L Lead4+4 pinsGFN; Pin Material: CP Wi
ER11.5 Bobbin, Vertical, 5+5 Pins, L Lead5+5 pinsGFN; Pin Material: CP Wir
ER11.5 SMD Bobbin, 4+4 Pins4+4 pinsLCP E4008; Pin Material: P
ER11.5 SMD Bobbin, 5+5 Pins5+5 pinsPhenolic; Pin Material: P
ER14.5 SMD Bobbin, 5+5 Pins5+5 pinsPhenolic PM9630; Pin Mate
ER14.5 SMD Bobbin, 6+6 Pins6+6 pinsLCP E4008; Pin Material: 
ER20 Vertical bobbin, 5+5 Pins5+5 pinsPhenolicP 2.5mm
ER25 Vertical bobbin, 10 Pins5+5 pinsPhenolicP 3.5mm
ER28 Horizontal bobbin with 10 pins5+5 pinsPhenolicP 6.0mm
ER28 Horizontal bobbin with 12 Pins6+6 pinsPhenolicP 5.0mm
ER28 Vertical bobbin with 15 pins6+9 pinsPhenolicP 5.0mm/4.0mm
ER28 Vertical bobbin with 18 Pins9+9 pinsPhenolicP 4.0mm
ER28 Vertical bobbin with 26 Pins13+13 pinsPhenolicP 2.5mm
ER28 Vertical bobbin with 28 Pins14+14 pinsPhenolicP 2.5mm/ 4.0mm/5
ER2820 Vertical bobbin with 10 Pins5+5 pinsPhenolicP 5.0mm
ER2828 Vertical bobbin with 10 Pins5+5 pinsPhenolicP 5.0mm
ER34 Vertical bobbin with 12 Pins6+6 pinsPhenolicP 5.0mm
ER35 2 sections Horizontal bobbin7+7 pinsPhenolicP 5.0mm
ER35 Horizontal bobbin with 12 Pins6+6 pinsPhenolicP 5.5mm/9.0mm
ER35 Horizontal bobbin with 14 pins7+7 pinsPhenolicP 5.0mm
ER35 Vertical bobbin with 12 Pins6+6 pinsPhenolicP 5.0mm
ER3542 Vertical bobbin with 14 pins7+7 pinsPhenolicP 5.0mm
ER39 Horizontal 2 sections bobbin with 14 Pins7+7 pinsPhenolicP 5.8mm
ER39 Horizontal 2 sections wider bobbin7+7 pinsPhenolicP 5.8mm
ER39 Horizontal bobbin with 16 Pins8+8 pinsPhenolicP 5.0mm
ER39 Vertical 9 Sections bobbin8+8 pinsPhenolicP 5.0mm
ER39 Vertical bobbin withv16 Pins8+8 pinsPhenolicP 5.0mm
ER40 Bobbin, Vertical, 7+7 Pins, pin distance: 5.0mm, Row distance: 25.0mm7+7 pinsPhenolicP 5.0mm
ER40 Horizontal Bobbin 8+8 Pins8+8 pinsPhenolicP 5.00mm
ER4035 Vertical bobbin with 12 pins6+6 pinsPhenolicP 5.0mm
ER42 Horizontal bobbin with 16 Pins8+8 pinsPhenolicP 5.0mm
ER4220 Vertical bobbin with 14 Pins7+7 pinsPhenolicP 5.0mm
ER4330 Horizontal 2 sections bobbin9+9 pinsPhenolicP 5.0mm
ER49 Horizontal bobbin with 22 Pins11+11 pinsPhenolicP 5.0mm
ER4901 Vertical bobbin with 14 Pins7+7 pinsPhenolicP 5.0mm
ER4904 Vertical bobbin with 18 Pins9+9 pinsPhenolicP 5.0mm
ER5301 Vertical bobbin with 18 Pins9+9 pinsPhenolicP 5.0mm
ER7.5 SMD Bobbin, 4+4 Pins4+4 pinsLCP E4008; Pin Material: 
ER9.5 Bobbin, Horizontal, 4+4 Pins, C4+4 pinsPhenolic PM9630; Pin Mat
ER9.5 Bobbin, Vertical, 3+3 Pins, L Lead3+3 pinsGFN; Pin Material: CP Wir
ER9.5 Bobbin, Vertical, 4+4 Pins, L Lead4+4 pinsGFN; Pin Material: CP Wi
ER9.5 SMD Bobbin, 4+4 Pins4+4 pinsPhenolic PM9630; Pin Mate
ER9.5 SMD Bobbin, 4+4 Pins, gap on top4+4 pinsPhenolic PM9630; Pin MateSMD ER11.5 Bobbin, 5+5 Pins, LCP Material5+5 pinsLCP E4008Selection Table
Every published part in this series with its geometry side by side.
Questions About ER Bobbins
How many er bobbins are published
45 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
GFN; Pin Material: CP Wire, GFN; Pin Material: CP Wire, LCP E4008; Pin Material: Phos Bronze, Phenolic; Pin Material: Phos Bronze, Phenolic PM9630; Pin Material: Phos Bronze, LCP E4008; Pin Material: Phos Bronze.
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.