{ "metadata": { "generated_at": "2026-06-01", "version": "1.0", "language": "en", "company": { "name": "KUK Group", "legal_name": "KUK Electronic AG", "headquarters": { "address": "Industriestrasse 10, CH-9050 Appenzell, Switzerland", "phone": "+41 71 788 38 00", "email": "info@kuk.ch", "website": "https://www.kukcoils.com" }, "description": "KUK Group is a globally established partner to medical & sensor, automotive, defence and the industry sector that rely on us for coil winding and other customer-specific electronic manufacturing services (EMS)." }, "sources": [ "https://www.kukcoils.com/production-customer-specific-coil-winding-and-assemblies", "https://www.kukcoils.com/faq-frequently-asked-questions-about-winding-goods-and-assemblies", "https://www.kukcoils.com/quality-manufacturer-of-customer-specific-winding-goods", "https://www.kukcoils.com/locations-global-production-of-customer-specific-coils-and-electronics" ] }, "products": { "description": "KUK Coils is a full-service EMS (Electronic Manufacturing Services) provider that focuses on the production of customer-specific coils as well as PCB assembly - this also includes engineering and the option of automation.", "technical_highlights": { "orthocyclic_windings": "Allow the densest possible stacking of turns. A transverse section of an orthocyclic coil would have a honeycomb shape. Orthocyclic coils are characterised by a high copper fill factor (often approx. 70%), so that a comparatively high magnetic field is realised in the smallest possible space.", "edgewise_winding": "One of the modern trends in coil manufacturing. The principle of this winding technology is that the rectangular section wire is wound not on the short side, but on the flat part of the wire." }, "categories": { "Air Core Coils": { "description": "Manufactured using self-bonding wire, baked to glue turns together. Includes micro coils, cylindrical/rectangular, and odd-shaped coils.", "subcategories": { "Micro Coil (Air Core)": { "description": "Ultra-fine wire processing from 0.010 mm diameter (pure copper). Effective outer diameter with insulation: 0.0133 mm.", "technical_specs": { "min_wire_diameter": "0.010 mm (10 µm)", "effective_outer_diameter_with_insulation": "0.0133 mm", "winding_types": ["Orthocyclic", "Edgewise"], "shapes": ["Round", "Rectangular", "Oval"] }, "materials": ["Pure Copper", "Self-bonding Wire"], "applications": ["Medical", "Sensor", "Aerospace"], "production_locations": ["Switzerland", "Slovakia"], "links": { "product_page": "https://www.kukcoils.com/customer-specific-micro-coil-air-core" } }, "Air Core Coil (Cylindrical/Rectangular)": { "description": "Manufactured according to unique specifications. Uses special wire (e.g., flat wire) or orthocyclic windings.", "technical_specs": { "winding_types": ["Orthocyclic", "Alpha Coil Winding"], "shapes": ["Cylindrical", "Rectangular"] }, "links": { "product_page": "https://www.kukcoils.com/customer-specific-air-core-coil-cylindrical-rectangular" } }, "Air Core Coil (Odd-shaped)": { "description": "All geometries, wire forms as well as orthocyclic windings are possible.", "technical_specs": { "winding_types": ["Orthocyclic"], "shapes": ["Custom geometries"] }, "links": { "product_page": "https://www.kukcoils.com/air-core-coil-odd-shaped" } } } }, "Bobbin Coils": { "description": "Windings on customer-specific bobbins, including toroidal coils and windings on magnetic cores.", "subcategories": { "Micro Coil (Magnetic Core)": { "description": "Minimum diameters from 0.3 mm. Used in medical and sensor systems.", "technical_specs": { "min_diameter": "0.3 mm", "core_materials": ["Ferrite", "Mu-metal", "Amorphous Materials"] }, "applications": ["Medical", "Sensor"], "links": { "product_page": "https://www.kukcoils.com/microcoils-magnetic-core" } }, "Windings on Bobbins": { "description": "Customer-specific windings on bobbins with all common shapes and geometries.", "technical_specs": { "bobbin_shapes": ["All common shapes and geometries"] }, "links": { "product_page": "https://www.kukcoils.com/windings-on-customer-specific-bobbins" } }, "Toroidal Coil": { "description": "Dimensions from 3 to 50 mm for industrial applications.", "technical_specs": { "min_dimension": "3 mm", "max_dimension": "50 mm" }, "applications": ["Industrial", "Defence"], "links": { "product_page": "https://www.kukcoils.com/customer-specific-toroidal-coil" } } } }, "Transformers": { "description": "High-frequency and low-frequency transformers, chokes, and transmitters.", "subcategories": { "High-Frequency Transformer": { "description": "For high-frequency applications.", "links": { "product_page": "https://www.kukcoils.com/customer-specific-high-frequency-transformer-hf" } }, "Low-Frequency Transformer": { "description": "For low-frequency applications.", "links": { "product_page": "https://www.kukcoils.com/customer-specific-low-frequency-transformer-lf" } } } }, "Assemblies": { "description": "Complete modules, electric motors, insert molding, and potting.", "subcategories": { "Assembling of Complete Modules": { "description": "Electronics added to coils or coil configurations, e.g., for motors (stator).", "links": { "product_page": "https://www.kukcoils.com/assembling-of-complete-modules" } }, "Electric Motor": { "description": "Coils and electronics as wired and assembled unit.", "technical_specs": { "size": "from smaller than a fist to motors with a diameter of 0.5 m", "weight": "up to approx. 25 kg" }, "links": { "product_page": "https://www.kukcoils.com/assembly-of-electric-motor" } }, "Insert Molding": { "description": "Insert molding of coils.", "links": { "product_page": "https://www.kukcoils.com/overmoulding-insert-molding-of-winding-goods-and-assemblies" } }, "Potting": { "description": "Potting of coils / modules, sealing of electronics / coil impregnation.", "links": { "product_page": "https://www.kukcoils.com/potting-of-coils-transformers-and-assemblies" } } } }, "PCB Assembly": { "description": "SMD and THT assembly from small series to mass production.", "subcategories": { "SMD Assembly": { "description": "Surface Mount Device assembly.", "links": { "product_page": "https://www.kukcoils.com/pcb-assembly-on-smd-lines" } }, "THT Assembly": { "description": "Through-Hole Technology assembly.", "links": { "product_page": "https://www.kukcoils.com/conventional-tht-pcb-assembly" } } } } } }, "faqs": [ { "id": "faq-1", "question": "What certifications does KUK Coils have?", "answer": "KUK Coils is ISO 9001, ISO 14001, ISO 13485, IATF 16949, and EN9100 certified. All global locations are ISO 9001 certified. We also comply with RoHS and REACH standards.", "category": "Certifications", "tags": ["ISO 9001", "ISO 14001", "ISO 13485", "IATF 16949", "EN9100", "RoHS", "REACH"] }, { "id": "faq-2", "question": "What industries does KUK serve?", "answer": "KUK serves the automotive, medical & sensor, defense, and industrial automation sectors with custom coil winding, assemblies, and PCB manufacturing.", "category": "Industries", "tags": ["automotive", "medical", "sensor", "defense", "industrial automation"] }, { "id": "faq-3", "question": "What types of coils does KUK manufacture?", "answer": "KUK manufactures air core coils (baked varnish coils or self-supported coils), toroidal core coils, transformers and chokes. Windings on bobbins and windings on magnetic cores are also part of our speciality - all in small as well as large runs.", "category": "Products", "tags": ["air core coils", "bobbin coils", "toroidal coils", "transformers", "chokes"] }, { "id": "faq-4", "question": "Can KUK handle ultra-fine wire for micro coils?", "answer": "Yes, KUK specializes in ultra-fine wire processing, starting from 0.010 mm (10 µm) for micro coils and miniature applications. KUK Group has extensive experience in winding miniature coils/micro coils with an ultra-fine wire of 0.010 mm diameter (pure copper); together with the insulating layer, the effective outer diameter is 0.0133 mm. With windings directly on magnetic cores, minimum diameters of the miniature coils/micro coils from 0.3 mm are thus possible, as they are used in the medical and sensor systems field, among others.", "category": "Technical Specifications", "tags": ["micro coils", "ultra-fine wire", "0.010 mm", "0.0133 mm", "0.3 mm"] }, { "id": "faq-5", "question": "Does KUK offer PCB assembly services?", "answer": "Yes, KUK provides PCB assembly on SMD and THT lines, including prototyping, small series, and large-scale production.", "category": "Services", "tags": ["PCB assembly", "SMD", "THT", "prototyping"] }, { "id": "faq-6", "question": "Where are KUK’s production sites located?", "answer": "KUK has 7 global production sites in Switzerland, the Netherlands, France, Slovakia, China, Thailand, and Tunisia.", "category": "Locations", "tags": ["production sites", "Switzerland", "Netherlands", "France", "Slovakia", "China", "Thailand", "Tunisia"] }, { "id": "faq-7", "question": "What core materials does KUK use for micro coils?", "answer": "KUK works with a wide range of core materials for magnetic cores in micro coils, including ferrite, mu-metal, amorphous materials, and neodymium, among others. The optimal core material for your specific micro coil must be assessed on a case-by-case basis.", "category": "Materials", "tags": ["ferrite", "mu-metal", "amorphous materials", "neodymium", "micro coils"] }, { "id": "faq-8", "question": "Does KUK provide custom packaging for coils?", "answer": "Yes, KUK offers custom packaging options, including trays, blister reels, and tape & reel for SMD components.", "category": "Services", "tags": ["custom packaging", "trays", "blister reels", "tape & reel"] }, { "id": "faq-9", "question": "What is KUK’s lead time for custom coil production?", "answer": "Lead times vary by project complexity. If a continuous decrease is contractually agreed with the customer, KUK establishes a flow production. Such a material flow can be defined and operated across several locations (global sourcing). Contact KUK for a customized quote and timeline based on your specifications.", "category": "Production", "tags": ["lead time", "custom coil production", "global sourcing"] }, { "id": "faq-10", "question": "Does KUK support automated assembly processes?", "answer": "Yes, KUK’s in-house automation department designs and builds custom machinery for high-precision coil winding and assembly.", "category": "Automation", "tags": ["automation", "assembly", "custom machinery"] }, { "id": "faq-11", "question": "For which application areas does KUK manufacture coils and electronics?", "answer": "KUK Group has been an established supplier to automotive, medical technology and sensor systems, and industrial customers for many years. KUK manufactures high-precision coils and complete solenoid valve units for automotive suppliers. In the medical and sensor systems field, KUK is a technology partner for miniaturised coils and electronics. KUK supplies the industrial sector with tailor-made coils and complete assemblies for a wide range of customer segments. The range extends from coils in drive technology to electronic components for building automation.", "category": "Applications", "tags": ["automotive", "medical technology", "sensor systems", "industrial", "solenoid valve units"] }, { "id": "faq-12", "question": "Does KUK offer a standard range of coils?", "answer": "No, at KUK Group every coil is custom-made. We are able to manufacture air core coils (baked varnish coils or self-supported coils), windings on bobbins, windings on magnetic cores, toroidal core coils, transformers and chokes in small and large series - regardless of shapes and dimensions. We also take care of the potting, sealing and insert molding of your coil.", "category": "Products", "tags": ["custom-made", "air core coils", "bobbin coils", "magnetic cores", "toroidal coils", "transformers", "potting", "sealing", "insert molding"] }, { "id": "faq-13", "question": "Which coils does KUK wind?", "answer": "As one of the world's leading coil manufacturers, we can offer you a wide range of coils: KUK Group winds air core coils (baked varnish coils or self-supported coils), toroidal core coils, transformers and chokes. Windings on bobbins and windings on magnetic cores are also part of our speciality - all in small as well as large runs. For us, every coil is unique, for which we work with you to find the best technical and commercial solution. We are also happy to support you in the development phase.", "category": "Products", "tags": ["air core coils", "toroidal core coils", "transformers", "chokes", "bobbin windings", "magnetic core windings"] }, { "id": "faq-14", "question": "What service does KUK offer in the assembly of printed circuit boards (PCB)?", "answer": "KUK Group is your flexible supplier and full-service partner for both SMD (Surface Mount Device) and conventional THT (Through-Hole Technology) PCB assembly. We take care of all work steps for you, from procurement to PCB assembly and quality control.", "category": "Services", "tags": ["PCB assembly", "SMD", "THT", "procurement", "quality control"] }, { "id": "faq-15", "question": "Can I order assembled units from KUK?", "answer": "Yes, thanks to our assembly service, with KUK Group you have a supplier who can provide you with assembled electronic components from a single source, for example coils, electronics and insert molding.", "category": "Services", "tags": ["assembled units", "electronic components", "coils", "insert molding"] }, { "id": "faq-16", "question": "I only need a small quantity of coils or assembled PCBs. Is it still worthwhile to enquire with KUK?", "answer": "Absolutely! As one of the world's leading manufacturers of coils and electronics, customised products, from small to large series, are our speciality. You can contact us easily via our web contact form.", "category": "Production", "tags": ["small quantity", "customised products", "coils", "PCBs", "web contact form"] }, { "id": "faq-17", "question": "My demand exceeds several million coils per year. Does KUK have this capacity?", "answer": "Absolutely! As one of the world's leading manufacturers of coils and electronics, customised products, from small to large series, are our speciality. If a continuous decrease is contractually agreed with the customer, KUK establishes a flow production. Such a material flow can be defined and operated across several locations (global sourcing).", "category": "Production", "tags": ["large series", "million coils", "flow production", "global sourcing"] }, { "id": "faq-18", "question": "KUK is a proven specialist for miniature coils/micro coils manufacturing. What minimum dimensions do you offer?", "answer": "KUK Group has extensive experience in winding miniature coils/micro coils with an ultra-fine wire of 0.010 mm diameter (pure copper); together with the insulating layer, the effective outer diameter is 0.0133 mm. With windings directly on magnetic cores, minimum diameters of the miniature coils/micro coils from 0.3 mm are thus possible, as they are used in the medical and sensor systems field, among others.", "category": "Technical Specifications", "tags": ["miniature coils", "micro coils", "0.010 mm", "0.0133 mm", "0.3 mm"] }, { "id": "faq-19", "question": "On which core material does KUK wind micro coils?", "answer": "KUK Coils is able to produce miniature coils with different core materials, for example amorphous core material, ferrite or mu-metal, among others. The minimum diameter is 0.1 mm. Which core material is optimal for the production of your micro coil must be assessed on a case-by-case basis.", "category": "Materials", "tags": ["core material", "amorphous", "ferrite", "mu-metal", "neodymium", "0.1 mm"] }, { "id": "faq-20", "question": "What kind of measurements can KUK perform in the production of micro coils?", "answer": "As part of coil production, KUK Group measures ohmic resistance and inductance serially of miniature coils. Further measurements can be assessed according to customer requirements.", "category": "Quality Control", "tags": ["measurements", "ohmic resistance", "inductance", "miniature coils"] } ], "certifications": { "description": "Overview certifications of our seven global locations in the production of winding goods, assemblies and PCB assembly. The essential certifications distinguish KUK as a reliable partner for automotive, industry and medical & sensor.", "rohs_reach": { "description": "KUK Electronic AG confirms that all products, unless otherwise noted, are produced in compliance with RoHS and REACH.", "rohs": { "directive": ["2011/65/EU", "2015/863/EU"], "compliance": "All products comply with maximum allowable concentrations in homogeneous substances: <0.01% cadmium, <0.1% lead, mercury, hexavalent chromium (Cr6+), polybrominated biphenyl (PBB), polybrominated diphenyl ethers (PBDE), di(2-ethylhexyl) phthalate (DEHP), benzyl butyl phthalate (BBP), dibutyl phthalate (DBP), diisobutyl phthalate (DIBP).", "exceptions": "Articles which require the application of high temperature plumb with lead content >85% belong to the exceptions and comply with RoHS as well.", "document_url": "https://www.kukcoils.com/hubfs/02_downloads/RoHS%20REACH/RoHS-REACH%20Declaration%20of%20Conformity%20KUK%20Elektronik%20AG%20-%20engl.pdf" }, "reach": { "regulation": "1907/2006", "compliance": "KUK Electronic AG is a downstream user. No substances from the SVHC (Substance of Very High Concern) list are used in production. Suppliers comply with all chemical substance requirements.", "document_url": "https://echa.europa.eu/candidate-list-table" } }, "by_location": [ { "location": "KUK Switzerland (Headquarters)", "address": "Industriestrasse 10, CH-9050 Appenzell, Switzerland", "contact": { "phone": "+41 71 788 38 00", "email": "info@kuk.ch" }, "certifications": [ { "name": "IATF 16949:2016", "scope": "Automotive Quality Management", "document_url": "https://hubspot-cta-redirect-eu1-prod.s3.amazonaws.com/cta/redirect/25463740/c5c7f4db-2530-456b-9ebc-98de73d0d12e" }, { "name": "ISO 9001:2015", "scope": "Quality Management System", "document_url": "https://hubspot-cta-redirect-eu1-prod.s3.amazonaws.com/cta/redirect/25463740/edc7a328-aeca-4f0c-bedc-2c431c4743e9" }, { "name": "ISO 14001:2015", "scope": "Environmental Management System", "document_url": "https://hubspot-cta-redirect-eu1-prod.s3.amazonaws.com/cta/redirect/25463740/8497b05e-d7af-4bf2-bc92-ecd7a0ab89ba" } ] }, { "location": "KUK Slovakia", "certifications": [ { "name": "ISO 9001:2015", "scope": "Quality Management System", "document_url": "https://hubspot-cta-redirect-eu1-prod.s3.amazonaws.com/cta/redirect/25463740/07a17c27-1367-455c-9e76-e3119acab0dc" }, { "name": "ISO 14001:2015", "scope": "Environmental Management System", "document_url": "https://hubspot-cta-redirect-eu1-prod.s3.amazonaws.com/cta/redirect/25463740/83e617a4-573c-4c7e-bb9a-6459257bdda4" }, { "name": "ISO 45001:2018", "scope": "Occupational Health and Safety", "document_url": "https://hubspot-cta-redirect-eu1-prod.s3.amazonaws.com/cta/redirect/25463740/6936d5b7-d645-45e6-82e0-3e61030d6371" } ] }, { "location": "KUK China", "certifications": [ { "name": "ISO 9001:2015", "scope": "Quality Management System", "document_url": "https://hubspot-cta-redirect-eu1-prod.s3.amazonaws.com/cta/redirect/25463740/82492a09-d21e-4b0a-adbc-5969de10ee64" }, { "name": "IATF 16949:2016", "scope": "Automotive Quality Management", "document_url": "https://hubspot-cta-redirect-eu1-prod.s3.amazonaws.com/cta/redirect/25463740/2f742967-087d-4ebf-ae0e-c2eb0bcffd57" } ] }, { "location": "KUK Netherlands", "certifications": [ { "name": "ISO 9001:2015", "scope": "Quality Management System", "document_url": "https://hubspot-cta-redirect-eu1-prod.s3.amazonaws.com/cta/redirect/25463740/be82e0ad-0407-401e-b80f-10f3a6a518c1" }, { "name": "ISO 14001:2015", "scope": "Environmental Management System", "document_url": "https://hubspot-cta-redirect-eu1-prod.s3.amazonaws.com/cta/redirect/25463740/61ff33a9-d4cd-4c0b-841f-36ae8c8ca44f" } ] }, { "location": "KUK France", "certifications": [ { "name": "ISO 9001:2015", "scope": "Quality Management System", "document_url": "https://hubspot-cta-redirect-eu1-prod.s3.amazonaws.com/cta/redirect/25463740/eeb39b28-c662-4f19-9dcf-86a6b4beb962" }, { "name": "EN 9100:2018 / AS9100:D", "scope": "Aerospace Quality Management", "document_url": "https://hubspot-cta-redirect-eu1-prod.s3.amazonaws.com/cta/redirect/25463740/aff22cad-e3ac-48df-9ca5-07425cb07f28" } ] }, { "location": "KUK Thailand", "certifications": [ { "name": "ISO 9001:2015", "scope": "Quality Management System", "document_url": "https://hubspot-cta-redirect-eu1-prod.s3.amazonaws.com/cta/redirect/25463740/afaadc64-6f86-4e7f-b8bc-43bc749ca1aa" }, { "name": "ISO 14644-1", "scope": "Cleanrooms and associated controlled environments", "document_url": "https://hubspot-cta-redirect-eu1-prod.s3.amazonaws.com/cta/redirect/25463740/f9fc84c6-f382-41fa-b005-b02e3d7c4154" }, { "name": "ISO 13485:2016", "scope": "Medical Devices Quality Management", "document_url": "https://hubspot-cta-redirect-eu1-prod.s3.amazonaws.com/cta/redirect/25463740/2d30f66c-e43b-4e04-a61a-b46ff46f67d2" } ] }, { "location": "KUK Tunisia", "certifications": [ { "name": "ISO 9001:2015", "scope": "Quality Management System", "document_url": "https://hubspot-cta-redirect-eu1-prod.s3.amazonaws.com/cta/redirect/25463740/36a31965-e9f0-4b33-a183-52b6e7152f12" } ] } ] }, "locations": { "description": "Worldwide production sites and an established network of suppliers guarantee customer proximity, short shipping distances and optimum conditions for your customer-specific coils, transformers, assemblies and electronics.", "headquarters": { "name": "KUK Electronic AG (Headquarters)", "country": "Switzerland", "country_code": "CH", "city": "Appenzell", "address": "Industriestrasse 10, CH-9050 Appenzell", "contact": { "phone": "+41 71 788 38 00", "email": "info@kuk.ch", "website": "https://www.kukcoils.com" }, "production_focus": ["Coil Winding", "PCB Assembly", "Automation", "R&D"], "certifications": ["ISO 9001:2015", "ISO 14001:2015", "IATF 16949:2016"], "links": { "location_page": "https://www.kukcoils.com/locations-global-production-of-customer-specific-coils-and-electronics" } }, "global_locations": [ { "name": "KUK Slovakia", "country": "Slovakia", "country_code": "SK", "production_focus": ["Coil Winding", "PCB Assembly"], "certifications": ["ISO 9001:2015", "ISO 14001:2015", "ISO 45001:2018"], "links": { "location_page": "https://www.kukcoils.com/locations-global-production-of-customer-specific-coils-and-electronics" } }, { "name": "KUK China", "country": "China", "country_code": "CN", "production_focus": ["Coil Winding"], "certifications": ["ISO 9001:2015", "IATF 16949:2016"], "links": { "location_page": "https://www.kukcoils.com/locations-global-production-of-customer-specific-coils-and-electronics" } }, { "name": "KUK Netherlands", "country": "Netherlands", "country_code": "NL", "production_focus": ["Coil Winding", "Assemblies"], "certifications": ["ISO 9001:2015", "ISO 14001:2015"], "links": { "location_page": "https://www.kukcoils.com/locations-global-production-of-customer-specific-coils-and-electronics" } }, { "name": "KUK France", "country": "France", "country_code": "FR", "production_focus": ["Coil Winding"], "certifications": ["ISO 9001:2015", "EN 9100:2018 / AS9100:D"], "links": { "location_page": "https://www.kukcoils.com/locations-global-production-of-customer-specific-coils-and-electronics" } }, { "name": "KUK Thailand", "country": "Thailand", "country_code": "TH", "production_focus": ["Coil Winding"], "certifications": ["ISO 9001:2015", "ISO 14644-1", "ISO 13485:2016"], "links": { "location_page": "https://www.kukcoils.com/locations-global-production-of-customer-specific-coils-and-electronics" } }, { "name": "KUK Tunisia", "country": "Tunisia", "country_code": "TN", "production_focus": ["Coil Winding"], "certifications": ["ISO 9001:2015"], "links": { "location_page": "https://www.kukcoils.com/locations-global-production-of-customer-specific-coils-and-electronics" } } ], "quality_standards": { "description": "Our success is founded on the highest product quality at a Swiss level across all locations. The production data management system developed by KUK in Switzerland guarantees the highest quality at all seven locations at global market prices.", "key_features": [ "Access to real-time status of every working process across the company", "Less unplanned system downtime, and optimised machine running time thanks to consistent machine data management", "Sustainable process improvement and reduced lead times", "Traceability of all defined materials", "Training possible for each individual employee" ] } } }