Ratioplast

What Ratioplast does

Ratioplast Electronics H.Wiedemann GmbH is a privately held, family-owned German manufacturer of custom electromechanical connectors and fibre optic components, founded in 1966 in Lübbecke and now operating under third-generation Helweg family ownership alongside two wholly-owned subsidiaries: Ratioplast-Optoelectronics GmbH (fibre optic cable technology and industrial data communication components) and CS-Connectors GmbH (connectors, acquired 2016, based in Waal). The company supplies automotive and railway technology manufacturers and their tier suppliers, with secondary applications in industrial data communication, automation, and medical technology. Its go-to-market is enterprise field sales via dedicated account managers (Robert Brüggemeyer and others) and inside sales personnel, with no distribution, reseller, or e-commerce channels.

The company offers more than 10,000 base models spanning plug connectors (including SMD Nano MQS, multipin, card edge, and circular connectors), fibre optic interfaces and transceivers (F-SMA, F-ST, M12), media converters and measurement systems, carrier tapes (anti-static packaging per DIN EN 60286-3), precision moulds and tools, injection moulded parts down to 0.05 grams (HotMelt method, materials PBT/PA4.6/PA6/PA6.6/POM/PC/PE/LCP/TPE) and stamped parts from 0.06 mm sheet thickness. Manufacturing is concentrated on a 5,500 m2 site using integrated TopSolid 3D CAD design, in-house toolroom capabilities (3D design, 5-axis milling, die sinking, wire-cutting), and a production depth exceeding 90% from design through series production and packaging; the operation is certified to IATF 16949:2016 and ISO 9001:2015.

Revenue is generated through quote-based, custom project pricing for hardware sales (electromechanical components, fibre optic components, tooling) and ancillary manufacturing services, with production runs ranging from unit quantity to mass production and billing structured around multi-year enterprise contracts. Marketing combines the ratioplast.de website and product database (ratioplast.info), industry trade show participation (including ECOC 2025), and direct B2B engagement, with no public price list and no reliance on third-party resellers; the firm maintains global reach while restricting physical production to Germany and lists a career page and named recruitment contact indicating ongoing hiring.

Name

Ratioplast

Legal name

Ratioplast Electronics H.Wiedemann GmbH

Website

https://ratioplast.de

Company type

Private

Founded year

1966

Operating status

Operating

Headcount range

1–10 employees

Short description

Ratioplast Electronics H.Wiedemann GmbH is a family-owned German precision manufacturer (founded 1966, third-generation ownership) of custom connectors and fibre optic components, serving automotive, railway, and industrial manufacturers via in-house design, tooling, moulding, and assembly.

Ownership category

akta.pro rank

Product category

Electromechanical and Fibre Optic Component Manufacturing

NAICS

Electronic Connector Manufacturing (334417)

SIC

Electronic Connectors (3678)

akta.pro primary industry

Connectors & Interconnect Components (Industrial connectors, terminals, sockets, backplane) (IMAGAJAC)

Keywords

• Electromechanical connectors
• Fiber optic components
• Precision injection moulding
• Custom stamped parts
• Industrial tooling services

Headquarters

HQ city

Lübbecke

HQ country

Germany

HQ region

Europe

Offices4 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Operations, Infrastructure, Technology or R&D, Supply Chain, Marketing or Sales

Revenue model

1. Custom Electromechanical Components: Design, development and production of customized plug connections/connectors and optical elements/FOC components for industrial manufacturers. Products include standard and custom connectors for PCBs, fibre optic components, carrier tapes, moulds, tools, injection moulded parts, and stamped parts. Revenue is generated through product sales with both small batch (quantity 1) and mass production capabilities.
2. Tooling and Manufacturing Services: In-house toolroom, mould and tool making services, stamping tools, and manufacturing services for customers. The company offers construction, mould/tool making, stamping, injection moulding, and final assembly services as part of their value chain.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

Ratioplast is a German manufacturer of custom and standard electromechanical connectors (Steckverbinder) and fibre optic (FOC) components, alongside the tooling, moulds, injection moulded parts, stamped parts, and carrier tapes needed to produce them. Its scope spans design, in-house toolroom fabrication, injection moulding (HotMelt method), precision stamping, final assembly, and quality management across a 5,500 m² production site in Lübbecke, Germany.

Product overview

Ratioplast is a German electromechanical component manufacturer offering a comprehensive portfolio of connectors and fiber optic (FOC) components with over 10,000 base models and numerous variants. The product range includes Connectors (standard and custom plug connections for PCBs), Optical Elements (fiber optic components for data communication and sensor technology), Carrier Tapes (anti-static packaging systems), Moulds & Tools (precision tooling manufactured in-house), Injection Moulded Parts (plastic components from 0.05g to mass production), and Stamped Parts (precision metal components from 0.06mm sheet thickness). The company operates with a unique production depth of over 90% in-house, covering product development, design, toolmaking, injection moulding/stamping, final assembly, and quality management.

Differentiator

Problem solved

Functional benefit

Products and services

• Connectors (Steckverbinder) Standard and custom plug connectors for PCBs including SMD Nano MQS, multipin connectors, card edge connectors, and circular connectors, available in standard models and customer-specific configurations for automotive, railway, industrial, and electronics manufacturers.
• Optical Elements (Optische Elemente / FOC Components) Fibre optic cable components for industrial data communication and sensor technology, including F-SMA connectors, optical emitters/receivers, M12 transceivers, media converters, and optical wattmeter measurement systems, for industrial customers in automotive, electrical, plant construction, automation, railway, and medical technology.
• Carrier Tapes (Blistergurte-Carrier Tapes) Anti-static packaging systems for automated logistics processes, compliant with DIN EN 60286-3, available in widths from 12 to 72 mm with pocket depths up to 21.75 mm, for secure transport and clean further processing of SMD/electronic components.
• Moulds and Tools (Formen und Werkzeuge) Precision moulds and tools manufactured in-house using 3D design, 5-axis milling, die sinking, and wire-cutting to support optimal series production for high-alloy tooling steels with maximum output volumes and minimum wear.
• Injection Moulded Parts (Spritzgussteile) Precision plastic components produced using the HotMelt injection moulding method, capable of manufacturing micro parts from 0.05 grams in batch quantities from 1 to mass production using materials such as PBT, PA4.6, PA6, PA6.6, POM, PC, PE, LCP, and TPE for industrial electronics customers.
• Stamped Parts (Stanzteile) Precision stamped parts including spring contacts, shielding plates, flat contacts, and carrier strips from sheet thicknesses as low as 0.06 mm, produced in-house with toolmaking capabilities for industrial customers.

Quantifiable outcome

• Over 90% production depth achieved through in-house capabilities
• +3 more outcomes

Named customers3 records

Segments5 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

One partnership is on record.

• AP Design GmbHminorOthersAP Design GmbH is responsible for website design, concept, and realization for Ratioplast's corporate website (www.apdesign.de). This is a service provider relationship for web development services.

Scale indicators6 records

Recent moves11 records

Expansion highlights5 records

Direct peers

• Phoenix Contact: German-headquartered specialist in industrial connectivity, automation and electronic interfaces with deep penetration in railway and industrial automation - exactly the customer verticals Ratioplast serves. Family-influenced and comparable in customer profile and German Mittelstand roots.
• ERNI Electronics: German-headquartered manufacturer of PCB connectors, backplane systems and industrial connectivity solutions. Direct comparable in product scope (PCB connectors, industrial applications), regional heritage and customer profile, though with broader product line.
• Radiall: France-headquartered manufacturer of interconnect components including fiber optic connectors (F-SMA, MPO) and RF/microwave solutions. Direct overlap in industrial fiber optic connectors (F-SMA is explicitly in both product lines) and industrial/rail market exposure.
• HARTING: Family-owned German manufacturer of industrial connectors (Han series), device connectivity and industrial networking. Direct overlap in industrial/railway connectors and German Mittelstand positioning; larger but serving the same customer base with overlapping products.
• LEMO: Swiss manufacturer of precision circular push-pull connectors and fiber optic interconnect solutions for industrial, medical and broadcast applications. Comparable in custom precision connectors, fiber optic components and high-mix/low-volume production philosophy.
• Odu GmbH: German family-owned manufacturer of high-performance circular connectors, modular connector systems and fiber optic solutions for industrial, medical and test applications. Direct peer in German Mittelstand positioning, custom precision connectors and overlap in automotive/medical verticals.

Broad incumbents

• Molex: Major global manufacturer of electronic interconnect solutions including PCB connectors, fiber optic components and custom cabling. Comparable product portfolio across connectors and fiber optics, with broader scale and customer reach.
• Amphenol: One of the world's largest interconnect, antenna and sensor manufacturers with broad exposure to automotive, industrial, IT and military markets. Comparable as a connector manufacturer with overlapping automotive and industrial customers, though operating at dramatically larger scale.
• TE Connectivity: Global leader in connectivity and sensors serving automotive, industrial, aerospace and communications markets. Comparable as a broad incumbent offering connectors and fiber optic components at scale, although vastly larger and more diversified than Ratioplast's specialized German Mittelstand position.

Emerging players

• Fiberfin: Specialized fiber optic component and connectivity provider serving industrial data communication markets. Comparable as an emerging specialist in the fiber optic component niche that Ratioplast-Optoelectronics addresses, though smaller and more narrowly focused.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/profile.php
• LinkedInlinkedin.com/company/ratioplast-electronics

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 records

Subsidiaries2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Ratioplast