This catalogue of coilformers contains information on 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 can supply coilformers made in high quality thermoplastics, matching your production requirements. Accessories, such as potting boxes, snap-on caps, latching-clips and spring-clips, are also included in this catalogue.

All dimensions in mm/inch. The permissible deviations according to DIN 16901 apply as tolerances.

Wherever high-temperature soldering processes are used in connection with EE/M-series coilformers, we recommend irradiation cross-linked plastics. This ensures that the mechanical properties - in particular those of gfr-polyamides - are maintainded and breakages are reduced. For this reason NORWE offers all plastic components of the EE/M-series in irradiated cross-linkes materials.

In the short term, the cross-linked materials can be exposed to very high temperatures. Apart from improved aspects in production there may be interesting cost advantages, and a discussion with us could be useful.

Should you need further assistance, be it technical or to assist when placing your order, we look forward to hearing from you.

Fully tagged or pinned coilformers are – in small quantities – usually available from stock. We can also quote for coilformers with pins or tags fitted to your requirements. All lead-times are relatively short.

Our extensive range of modular tooling allows almost unlimited constructional changes, to customers specification, often by simple changes of tool inserts.

In addition the modular tooling system allows extremely short tooling times and can be very cost effective.

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 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

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. Max. 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 design 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

Survey of Solder-pins

The tables below contain the standard solder-pins matched to the coilformers of the EE/M-series and inform you about the exact dimensions of the solder-pins. The material used is tin bronze, tinned.

Further shapes and types are included in our catalogue "Stamped and Pressed Components for Electronic Applications". In addition we also supply individual solder-pins to customers specification - please contact us. Special materials/designs on request, dimensions in mm/inch.

EE - M (Solder-pins)

Survey of Solder-tags

The solder-tags below are the standard types matched to the coilformers of the EE/M-series. The tables contain the exact dimensions of the solder-tags. The material used is brass, tinned.

Further shapes and types are included in our catalogue "Stamped and Pressed Components for Electronic Applications". In addition we also supply individual solder-tags to customers specification - please contact us. Special materials/designs on request, dimensions in mm/inch.

EE - M (Solder-tags)

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 corses.

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 Catalogue Informations

For explanatory and more detailed information on this coilformer-series, analogous to printed catalogue version, please kindly see the attached pdf-file.

EE/M Catalogue-Infos