EE/M-Series

All our products of the EE/M-Series

The EE/M components were designed for applications in small transformers, but are also used in switched mode power conversion. We supply components made in high quality thermoplastics, matching your production requirements.

Wherever high-temperature soldering processes are used, we recommend irradiation cross-linked thermoplastics. Cross-linked materials can be exposed to short, but very high peak temperatures. Beside improved production aspects there may be also interesting cost advantages.

Our extensive range of modular tooling allows constructional changes to customers specification by simple changing tool inserts. In addition the modular tooling system allows short tooling times and can be very cost effective.

Should you need further assistance we look forward to hearing from you.

EE 8 - EE 32 Horizontal

The coilformers are made in gfr Polyamide PA66 of type p6g (RTI long-range temperature +125°C), x2g5 (RTI long-range temperature +120°C), A3X2G10, sw (RTI long-range temperature +115°C) and in gfr Polybutylene Terephthalate PBT of type pcg (RTI long-range temperature +130°C). Pin material is tin bronze, tinned and tag material is brass, tinned. Maximum solder temperature 350°C, 2 sec.
Special materials -e.g. irradiated cross-linked- and designs on request dimensions in mm/inch.

This group of horizontal coilformers is sorted by ferrite core/lamination size and each by pinning with straight pins, side-wrapping pins, solder-tags and conventional coilformers. Most designs feature terminal strips with "noses" which provide tension-relief of the winding wires and "stand-offs".

EE 8 - EE 32

EE 12.6 - EE 25 Horizontal / longer creepage

The coilformers are made in gfr Polyamide PA66 of type x2g5 (RTI long-range temperature +120°C). Pin material is tin bronze, tinned. Maximum solder temperature 350°C, 2 sec.
Special materials -e.g. irradiated cross-linked- and designs on request, dimensions in mm/inch.

NORWE now is designing to expand the series of EE/M coilformers horizontal EE 12.6 to EE 25 with longer creepage-dimensions between ferrite and solder-pin.
The design allows automatic winding also on NC winding machines. Special winding noses and also a wire routing provide tension-relief when binding on the wire. The coilformers have distance strips to avoid cold-solder joints into the PCB.

EE 12,6 - EE 25 / longer creepage

EE 8 - EE 32 Vertical

The coilformers are made in gfr Polyamide PA66 of type p6g (RTI long-range temperature +125°C), x2g5 (RTI long-range temperature +120°C) and A3X2G10, sw (RTI long-range temperature +115°C). Pin material: tin bronze, tinned and tag material: brass, tinned. Maximum solder temperature 350°C, 2 sec.
Special materials -e.g. irradiated cross-linked- and designs on request, dimensions in mm/inch.

This group of vertical coilformers is sorted by ferrite core / lamination size and each by pinning with straight pins, side-wrapping pins, solder-tags and convertional coilformers.
Most designs feature terminal strips with "noses" which provide tension-relief of the winding wires and "stand-offs". Some coilformers also feature extended flanges to prevent clips sliding off.

EE 8 - EE 32 Vertical

EE 12.6 - EE 25 Vertical / longer creepage

The coilformers are made in gfr Polyamide PA66 of type x2g5 (RTI long-range temperature +120°C). Pin material is tin bronze, tinned. Maximum solder temperature 350°C, 2 sec. Special materials -e.g. irradiated cross-linked- and designs on request, dimensions in mm/inch.

NORWE now is designing to expand the series of EE/M coilformers horizontal EE 12.6 to EE 25 with longer creepage-dimensions between ferrite and solder-pin.
The design allows automatic winding also on NC winding machines. Special winding noses and also a wire routing provide tension-relief when binding on the wire. The coilformers have distance strips to avoid cold-solder joints into the PCB.

EE 12,6 - EE 25 / longer creepage

M 20 - M 74 / E 70 - E 80 Horizontal

The coilformers are made in gfr Polyamide PA66 of type p6g (RTI long-range temperature +125°C) and x2g5 (RTI long-range temperature +120°C). Pin material: tin bronze, tinned and tag material is brass, tinned. Maximum solder temperature 350°C, 2 sec.
Special materials -eg.irradiated cross-linked- and designs on request, dimensions in mm/inch.

This group of horizontal coilformers is sorted by ferrite core / lamination size and each by pinning with straight pins, side-wrapping pins, solder-tags and conventional coilformers.
Most designs feature terminal strips with "noses" which provide tension-relief of the winding wires and "stand-offs". Some coilformers also feature extended flanges to prevent clips sliding off.

M 20 - M 74 / E 70 - E 80

M 20 - M 55 Vertical

The coilformers are made in gfr Polyamide PA66 of type p6g (RTI long-range temperature +125°C) and x2g5 (RTI long-range temperature +120°C). Pin material: tin bronze, tinned. Maximum solder temperature 350°C, 2 sec.
Special materials -eg.irradiated cross-linked- and designs on request, dimensions in mm/inch.

This group of vertical coilformers is sorted by ferrite core / lamination size and each by pinning with straight pins and side-wrapping pins. Most designs feature terminal strips with "noses" which provide tension-relief of the winding wires and "stand-offs". Some coilformers also feature extended flanges to prevent clips sliding off.

M 20 - M 55 Vertical

Potting Boxes

The potting boxes are made in gfr Polyamide PA66 of type p6g (RTI long-range temperature +125°C).
Special materials -eg. irradiated cross-linked- and designs on request, dimensions in mm/inch.

Potting Boxes are required when higher requirements on insulation is specified. Creepage and clearance dimensions are increased. Potting should preferably be under vacuum.
When ordering please quote type and order-code.

EE 12.6 - EE 32, M 20 - M 42

Snap-on Potting Boxes / Snap-on Caps

The Snap-on Potting Boxes are made in gfr Polyamide PA66 of type x2g5, (RTI long-range temperature +120°C). They are assembled with the wound coilformer and the pair of ferrite cores. "Noses" at the inside of the boxes ensure correct positioning and pressure the ferrite cores.

The Snap-on Caps are made in gfr Polyamide PA66 of type eg7, (RTI long-range temperature +120°C). The spring action snap-on caps allow quick assembly of the coilformers and the ferrite cores in their correct positioning. "Noses" at the inside ensure safe pressure onto the cores. The caps have openings at the sides which allows additional glueing if required.
When ordering please quote type and order-code.

EE 8 - EE 25, M 20 - M 30

Spring-Clips SB-EF/E

Glueing methods are usually used to connect and secure the ferrite cores. Glues, such as Araldite, require the ferrite cores to be kept under constant pressure until the glue has hardened. A more advantageous and quicker method is by using stainless steel Spring-clips SB. The holding pressure is almost constant over the whole operating temperature range.

One clip is required to assemble a wound coilformer with one pair of ferrite cores. The use of a drop of glue is recommended, to connect the ferrites to the coilformer and to prevent frequency noise.
Special materials / designs on request. Dimension in mm/inch.
When ordering please quote type and order-code.

SB-EF 8 - EF 32, SB-E 30

Latching-Clips FB-EF/E, Clips FK-E

Usually, glues such as Araldite are used to connect the ferrite cores. However the ferrite cores must be kept under constant pressure until the glue has hardened. A quicker and therefore more advantageous connection is achieved by using clips. Latching-clips FB are designed for use in auto/semi-automatic production.
When ordering please quote type and order-code.

Both types are made of stainless steel. Two clips are required per set. A drop of glue may be used to secure the ferrite core to the coilformer. This also reduces frequency moise.
Special materials / design on request, dimensions in mm/inch.
When ordering please quote type and order-code.

Latching-Clips FB, Clips FK

Ordering Example

Please kindly take all details which are necessary to execute your order correctly from the ordering example (pdf-file).

EE/M Ordering Example

Additional Product Informations

For explanatory and more detailed information on this coilformer-series please kindly see the attached pdf-file.

- Information of EE/M-Series
- Ferrite Cores EF/E
- Lamination EE/M
- Survey of Solder-pins
- Survey of Solder-tags
- List of Thermoplastic Materials
- Information Irradiation Cross-Linking

EE/M Product-Infos