Sales and manufacturing of cables, flat cables, heat-shrink products, marking systems and special materials for electronic systems.
SEI Interconnect Products (Europe) Ltd.
Swansea (GB) · Norderstedt (DE) · Bremen (DE) · Broadstairs, Kent (GB) · Evry (FR) · Blagnac (FR) · Como (IT)New on Amplifa
About SEI Interconnect Products (Europe)
SEI Interconnect Products (Europe) Ltd. (SEPE) is part of Sumitomo Electric Industries, Ltd., Japan's largest cable manufacturer, founded in 1897. The company sells and provides sales support for the products of the Sumitomo Electric Group in Europe, including electric wires and cables, flexible flat cabling, flexible printed circuits (FPC), heat-shrink products (SUMITUBE™), the SUMITAG™ marking system, cable markers, high-speed data cables such as Thunderbolt™-3 cables, Celmet™ porous metals, heat spreader materials and compound semiconductor substrates. The SEI Group manufactures products from copper, plastics such as polyethylene, PVC, PTFE and silicone, as well as porous nickel materials. Customer industries include consumer electronics, industrial, automotive, data transmission, telecommunications, medical technology, environmental engineering, aerospace, and hydrogen and fuel cell technology. The headquarters are located in Swansea (UK), with branches in Germany (Norderstedt, Bremen), France and Italy, as well as manufacturing of flexible flat cables by SEPE KFT in Hungary.
- Site
- SA7 0AJ Swansea
- Processes
- Manufacture of Flexible Flat Cabling, Manufacture of Marking, Binding, Identification, Protection Products (Heat-shrink, Tubing, Forms), Heat Shrink Tubing (SUMITUBE™) – Production, Manufacture of copper wires, copper sheets and copper rods, Processing of Celmet™ porous metal by cutting and pressing, Manufacture of flexible printed circuits (FPC), Manufacture of compound semiconductors, Manufacture of optical fiber cables
- Materials
- Copper, Polyethylene, PVC, PTFE, Silicone, Cu-W (Copper Tungsten), CuDia (Copper Diamond), AlN (Aluminium Nitride)
- Certificates
- ISO 9001, EN 9120, EN 9100
- Founded
- 1897
- Industries
- Consumer Electronics, Industrial, Automotive, Data Transmission, Telecommunications, Medical Technology
- 01
Manufacturing by Sumitomo Electric Group plants
- 02
Sales and distribution via European sales network
- 03
Sales support and logistics for customers in Europe and worldwide
Materials and Processes
Copper
Base material for wires, sheets, rods and cables since the founding of the Sumitomo Copper Rolling Works in 1897.
Polyethylene
Material for heat-shrink tubing (SUMITUBE™/IRRAX TUBE), radiation-crosslinked for improved heat and abrasion resistance.
PVC
Material for tubing and molded parts in the Marking, Binding and Protection area.
PTFE
Material for tubing and molded parts with high chemical and thermal resistance.
Silicone
Material for flexible tubing and molded parts in the Identification and Protection product areas.
Nickel (Celmet™)
Porous metal with porosity up to 98 % used as a current collector in batteries, fuel cells and filter applications.
Ni-Cr Alloy (Celmet™)
Porous nickel-chromium alloy for fuel cell collectors and filter materials.
Ni-Sn Alloy (Celmet™)
Porous nickel-tin alloy for a wide range of filter and electrode applications.
Cu-W (Copper Tungsten)
Heat spreader material with high thermal conductivity for thermal management of semiconductor devices.
Cu-Mo (Copper Molybdenum)
Heat spreader composite material with a tailored coefficient of thermal expansion for electronic components.
CuDia (Copper Diamond)
High-performance material with very high thermal conductivity for semiconductor applications.
AlN (Aluminum Nitride)
Heat spreader material for thermal management of electronic devices.
Locations
Swansea
GBHeadquarters and UK Sales Office
Norderstedt
DEGerman Branch Office (Cable and Component Sales, Fine Polymer Sales, Celmet Sales, Thunderbolt Sales)
Bremen
DEHeinrich Thulesius GmbH & Co. KG – Industrial and Electrical Engineering
Broadstairs
GBSEI Identification Solutions Ltd. – Identification and Marking Products
Evry
FRFrench Branch Office
Blagnac
FRSEI Identification Solutions SAS
Como
ITItalian Branch Office
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Manufacture of Flexible Flat CablingPlastics | – | – | – | – | Copper, Plastics |
| Manufacture of Marking, Binding, Identification, Protection Products (Heat-shrink, Tubing, Forms)Plastics | – | – | – | – | Irradiated Polymeric Heat-shrink, Silicone, PTFE, PVC |
| Heat Shrink Tubing (SUMITUBE™) – ProductionPlastics | – | – | – | – | Polyethylene, PVC, radiation-crosslinked polymers |
| Manufacture of copper wires, copper sheets and copper rodsForming | – | – | – | – | Copper |
| Processing of Celmet™ porous metal by cutting and pressingForming | – | – | – | – | Nickel, Ni-Cr, Ni-Sn |
| Manufacture of flexible printed circuits (FPC)Plastics | – | – | – | – | – |
| Manufacture of compound semiconductorsOther | – | – | – | – | – |
| Manufacture of optical fiber cablesOther | – | – | – | – | – |
Additional services
Reference customers
Quality
SEPE has been certified to ISO 9001 since 2011 and to EN 9120 for distributors in the aviation, space and defence sector since 2023. SEI Identification Solutions Ltd. complies with EN 9100/EN 9120; manufacturing partners of the Sumitomo Electric Group hold additional ISO certifications, available upon request.
| Evidence | SEPE | SEID |
|---|---|---|
| ISO 9001 | ||
| EN 9120 | ||
| EN 9100 |
History
- 1897
Founding of the Sumitomo Copper Rolling Works for the manufacture of copper wires, sheets and rods (origin of Sumitomo Electric Industries).
- 1911
Founding of the Sumitomo Electric Wire & Cable Works; first high-voltage underground cables (11,000 V) manufactured in Japan.
- 1920
Conversion into a limited liability company; technical cooperation with Western Electric.
- 1939
Renaming to Sumitomo Electric Industries, Ltd.
- 1970
Start of production of compound semiconductors.
- 1974
Start of production of optical fiber cables.
- 1988
Founding of Sumitomo Electric Europe SA (SEESA) in the United Kingdom.
- 1997
SEESA renamed Sumitomo Electric Europe Limited; founding of SEI Interconnect Products (UK) Ltd in Wales for the manufacture of flexible flat cables.
- 1999
Founding of SEI Interconnect Products (Europe) Ltd (SEPE) through the merger of SEEL and SEUK.
- 2000
Founding of SEPE KFT in Hungary and relocation of flexible flat cable manufacturing there.
- 2011
SEPE certified to ISO 9001.
- 2012
Siegrist-Orel Limited (UK) and Heinrich Thulesius GmbH & Co. KG (Germany) join the SEPE Group.
- 2015
Siegrist-Orel Ltd renamed SEI Identification Solutions Ltd. (SEID); Thunderbolt 3 cable certification by Intel.
- 2017
120th anniversary of Sumitomo Electric Industries.
- 2018
Identification/Fine Polymer sales function transferred from SEID to SEPE.
- 2023
SEPE certified to EN 9120 (Aviation, Space and Defence Distributors).