What information is needed to start a custom membrane switch project?

Send a drawing (PDF, DXF, AI or CAD), your artwork or key legend, the required tactile feel, connector or tail type, operating environment (temperature, moisture, chemicals), whether backlighting or a metal dome array is needed, and your estimated annual quantity. Our engineers will review manufacturability and propose a layer stack-up.

Should I choose a PET or PC graphic overlay?

PET overlays offer excellent flex life and chemical resistance, making them the common choice for keys that are pressed frequently. PC (polycarbonate) overlays are easy to emboss and form, and give crisp print and clear windows, which suits decorative panels and display windows. Both are available in glossy, matte or textured finishes.

Which metal dome types do you produce?

We produce 4-leg cross-shaped domes (with or without dimple, for example 8.4 mm, 10 mm and 12 mm), round domes and triangular snap domes in stainless steel with nickel or gold plating options. Domes can be supplied loose or pre-assembled as metal dome arrays on adhesive carrier film.

How is product quality controlled?

Production runs under an ISO 9001 quality management system and the factory has been verified onsite by SGS Group. Inspection uses CCD vision inspection, electrical testing, dome load testing, high and low temperature cabinets, tension (peel) testing, tack testing and pencil hardness testing.

What is the minimum order quantity?

Minimum quantities depend on the product: selected overlay keypads start from 10 pieces, most custom membrane switches from 100 pieces and metal domes from 1,000 pieces. Prototype samples are supported before mass production.

OEM / ODM Precision Engineering · Loire-Atlantique Support

Custom OEM LED Membrane Switch Factory & Exporter for Nantes

Precision-engineered tactile human-machine interfaces, IP67 waterproof sealed graphic overlays, SMT LED backlighting, and SUS301 stainless steel dome arrays certified for industrial, maritime, agrifood, and medical systems across Pays de la Loire.

16+

Years Engineering Expertise

2,600㎡

ISO 9001 In-House Facility

>1M

Tactile Actuation Life Cycles

100%

Electrical & CCD Inspected

Engineered For Excellence

High-Performance Membrane Switch & Metal Dome Solutions

Explore our export-ready tactile keyboard switches, stainless snap dome arrays, and capacitive touch panels configured to European EN and ISO operational standards.

Tactile 1-Row

Price 1 Row 4 Key Custom Made One Button Quality Keyboard Membrane Switch

Circuit Layer: Silver-Printed PET
Actuation Force: 280g - 350g
Connector: 2.54mm Female Pitch

SUS301 Array

Waterproof Single Layer SUS301 Stainless Steel Dome Array Remote Control

Material: SUS301 High Elasticity
Plating: Nickel / Gold Flash
Carrier: Adhesive PET Film

Remote Controls

Free Sample Round Metal Dome Array Single Layer Transparent Pet With Adhesive

Dome Shape: Round Snap Dome
Trip Force: 160g - 220g (±20g)
Life Expectancy: >1,000,000 Cycles

PMMA Capacitive

Custom Waterproof Keypad Smart Door Touch Switch PMMA Membrane Switch Panel

Technology: Capacitive Sensing
Faceplate: PMMA Acrylic / Hardcoat
Ingress Level: IP68 Washdown Rated

Fuel & Heavy Duty

Matrix Membrane Switch Keypad Keyboard Panel

Custom Standard Price 3X3 4X5 Matrix Membrane Switch Keypad For Fuel Dispenser

Matrix Format: 3x3, 4x4, 4x5 Matrix
Chemical Proof: Petroleum & Solvent Safe
ESD Shielding: Aluminum / Graphite Grid

Control Console

Factory Direct Price Electronic Membrane Switch Control Panel Membrane

Adhesive Back: 3M 467MP / 468MP Adhesive
Operating Temp: -20°C to +70°C Continuous
Tail Pitch: 1.0mm, 1.27mm, 2.54mm

Medical Grade

Medical Instrument Membrane Switch PET Key

Customized Medical Instrument Membrane Switch PET Membrane Key PC Switch

Hygiene Level: Antimicrobial Polyester
Disinfection: Bleach & Alcohol Resistant
Window Transparency: Clear / Non-Glare Filter

Embossed Dome

Custom Silk Printing Embossed Metal Dome Tactile Buttons Membrane Switch

Key Finish: Pillow / Rim Embossing
Backlight Type: SMT LED / Light Guide Film
Color Accuracy: Pantone / RAL Silk Screen

Localized Engineering Context

Optimized for the Industrial Core of Nantes & Pays de la Loire

From the naval shipyards of Saint-Nazaire to the agrifood packaging corridors along the Erdre and Loire rivers, our human-machine interface assemblies fulfill strict French and European directives.

As the economic capital of Western France, the greater Nantes metropolitan area (Nantes Métropole) and the contiguous Loire-Atlantique basin represent a formidable cluster of high-technology engineering. Modern original equipment manufacturers (OEMs) and contract electronics manufacturers (CEMs) operating across Bouguenais, Carquefou, Saint-Herblain, and the Atlantic maritime axis demand human-machine interfaces (HMIs) capable of withstanding extreme humidity, saline corrosion, aggressive CIP (clean-in-place) sterilization, and continuous physical operation.

Dongguan Cevra Electronic Technology Co., Ltd. serves as an experienced manufacturing bridgehead, engineering custom LED membrane keypads, metal dome arrays, and capacitive switch panels specifically calibrated to the operating conditions found across Pays de la Loire manufacturing facilities. By combining ISO 9001 certified Chinese component manufacturing with strict compliance to European Union CE, RoHS (Directive 2011/65/EU), and REACH (Regulation EC 1907/2006) regulations, we eliminate the supply chain friction typically associated with overseas custom electromechanical sourcing.

Maritime & Offshore Wind (Saint-Nazaire Corridor)

The Atlantic offshore wind development programs and Saint-Nazaire shipyards require ruggedized naval bridge control stations, ballast management panels, and crane remote transmitters that reject saltwater ingress.

IP67 / IP68 Perimeter Polyurethane Foam Gaskets
1,000-Hour ASTM B117 Salt Spray Resistant Inks
Night-Vision-Compatible Green & Red LED SMTs

Agrifood Packaging & Processing (Clisson / Erdre)

Western France's agrifood industry demands flat, crevice-free console interfaces for industrial bakeries, dairy packing plants, and meat processing facilities subject to daily chemical caustic washdowns.

Antimicrobial Autotex AM Polyester Top Layers
Resistance to Sodium Hypochlorite & Organic Acids
Flush Capacitive or Embossed Rim Tactile Clicks

Medical Diagnostics & Biotech (CHU Nantes Hub)

Supporting the healthcare engineering ecosystem radiating from the Nantes University Hospital (CHU) cluster, our switches provide precise feedback and sterile wipe-down performance for clinical instrumentation.

ISO 13485 Compliant Cleanroom Stack Assemblies
Zero-Blemish Optical Display Windows for LCDs
ESD Barrier Layers Guarding Sensitive Logic Up to 15kV

Layer-by-Layer Engineering

Precision Anatomical Architecture of Our LED Membrane Switches

Every membrane switch manufactured in our Dongguan cleanrooms is built from up to 7 bonded micro-layers, engineered for tactile response, electrical longevity, and environmental hermeticity.

LAYER 01

Graphic Overlay

Autotex PET or Bayer Makrofol PC with sub-surface silkscreen printing; resistant to scratching, UV yellowing, and chemicals.

LAYER 02

Upper Adhesive

Die-cut 3M 467MP or 468MP high-tack acrylic adhesive with CNC cutouts for key travel and backlighting clearances.

LAYER 03

Dome Retainer & Tactile

Four-leg stainless steel SUS301 metal snap domes with nickel/gold plating seated on vented carrier film for crisp snap.

LAYER 04

Conductive Circuit

High-conductivity silver paste screen-printed on heat-stabilized polyester film (or polyimide FPC) with carbon overcoats.

LAYER 05

Mounting Rear Liner

Engineered release liner with transfer adhesive matched to the customer’s chassis material (aluminum, ABS, steel).

"Unlike generic assembly workshops, Dongguan Cevra Electronic Technology Co., Ltd. incorporates conductive silver epoxy encapsulation with automated UV cure stations for surface-mount LEDs. This achieves a pull-off shear strength exceeding 18 Newtons, ensuring that SMT components do not delaminate even under high-vibration naval or aeronautical duty."

Technical Decision Matrix

Comparison of HMI Technologies for Western French Hardware Teams

Selecting the optimal operator interface technology requires balancing actuation lifecycle, ingress protection, visual illumination, and NRE tooling expenditures.

Evaluation Parameter	SMT Tactile LED Membrane Switch	Capacitive Touch Film Switch	Rigid PCB Metal Dome Keypad	Silicone Elastomeric Keyboard
Tactile Feedback	Sharp, crisp physical snap (SUS301 dome)	Zero snap; requires audio/visual or haptic pulse	Firm, distinct click against rigid PCB traces	Soft, cushioned tactile rubber drop
Operating Life Cycles	1,000,000 to 3,000,000 actuations	>5,000,000 actuations (no moving parts)	1,000,000 to 2,000,000 actuations	500,000 to 1,000,000 actuations
Sealing Potential	IP65 to IP67 with continuous perimeter seal	IP68 / IP69K completely hermetic surface	IP54 standard; IP65 with secondary bezel	IP65 through overlapping wrap-around lips
LED Illumination	Embedded 0603/0805 SMT LEDs or LGF	Backlit capacitive icons & multi-color RGB	Direct PCB through-hole / SMT placement	Light pipes or translucent laser-etched keys
Total Profile Thickness	0.8mm to 1.5mm (ultra-slim)	1.0mm to 3.0mm depending on overlay cover	2.0mm to 4.5mm (including PCB backer)	5.0mm to 12.0mm (tall key travel)
Initial Tooling / NRE	Very Economical (Film & Steel Dies)	Moderate (Sensor routing & IC tuning)	Moderate to High (PCB Gerbers + tooling)	High (Precision compression molding tool)
Typical Nantes Applications	Agrifood machines, marine test consoles	Smart building automation, medical lab diagnostic	Defense radio handhelds, rail trackside units	Ruggedized outdoor handheld data loggers

Certified Manufacturing Authority

Dongguan Cevra: 16 Years of Advanced HMI Production

Headquartered in Dongguan, Guangdong, our 2,600㎡ manufacturing center brings together fully automated printing, CCD precision routing, and an on-site testing laboratory verified on-site by SGS Group.

Dust-Free Precision Printing

Our Class 10,000 cleanroom environments house semi-automated and fully automatic silkscreen machines capable of holding tighter than ±0.05mm registration tolerances across multi-color graphic overlays and fine-line conductive silver traces.

Automated Micro-Lamination

Equipped with heated rolling laminators and optical alignment cameras, we eliminate trapped micro-bubbles, air pockets, and adhesive creasing, guaranteeing structural bond integrity across multi-layer membrane switch architectures.

Full In-House Reliability Testing

Before batch dispatch to France, production lots undergo rigorous inspection on computer-controlled dome load curve testers, electrical resistance analyzers, -40°C to +85°C thermal shock cabinets, and 3M adhesive peel-strength jigs.

SGS Onsite Factory Verified Manufacturer

Independent third-party verification confirming factory scale, R&D capacity, and ISO 9001 compliance.

ISO 9001:2015 RoHS & REACH Compliant 100% Circuit Continuity Tested

Procurement & Logistics Clarity

Frequently Asked Questions by Industrial Buyers in Nantes

Essential guidance for purchasing managers, hardware system architects, and supply chain coordinators in the Pays de la Loire region.

What is the standard lead time for prototyping and production to Nantes?

Initial DFM engineering proofs are completed within 24 to 48 hours. Rapid functional prototyping (laser-cut tooling and sample silkscreening) takes 5 to 8 working days. Mass production requires 12 to 18 working days. Express air freight to Nantes Atlantique Airport (NTE) or regional hubs takes 4 to 6 business days with door-to-door DDP clearance.

Are raw materials compliant with European REACH and RoHS regulations?

Yes. Every polymer film (PET, PC, PMMA), conductive silver ink, carbon paste, adhesive transfer tape (3M 467/468MP), and solder epoxy used in our factory complies fully with RoHS 3 (Directive 2015/863) and REACH (EC 1907/2006). Formal third-party laboratory declaration certificates are provided with first article inspection reports (FAIR).

How do you guarantee IP67 waterproof integrity for maritime environments?

We employ an unbroken outer perimeter adhesive barrier gasket (minimum 1.5mm to 2.5mm track width) surrounding the active tactile switch cavities. Air exhaust micro-channels are vented back through the tail exit directly into the device's sealed enclosure, ensuring that direct high-pressure hose-downs or salt spray cannot enter the contact matrix.

Can you assemble embedded LEDs and resistors on standard silver polyester?

Yes. We integrate ultra-thin surface-mount 0603 and 0805 single-color, bi-color, and full-color RGB LEDs directly onto conductive silver-printed PET traces using anisotropic conductive paste (ACP) and flexible encapsulation resins. For demanding high-flexion tail designs, we also fabricate polyimide-based FPC circuits that accept standard reflow soldering.

What minimum order quantities (MOQ) apply to custom OEM orders?

We provide prototype trial runs starting from as few as 10 to 50 pieces to assist pilot equipment testing for French engineering design houses. For volume series production, our standard MOQ is 100 units for complete membrane switch panels and 1,000 units for standalone metal dome snap arrays.

How are color matching and graphic artwork approvals managed?

We accept vectorized artwork files in DXF, DWG, Adobe Illustrator (.AI), and STEP formats. Silkscreen ink colors are matched strictly to international Pantone Matching System (PMS) or European RAL Classic standards. Color density and spectrophotometer delta-E (ΔE < 1.5) values are validated under calibrated D65 light booths prior to sign-off.

Initiate Your Custom Membrane Switch Project for Nantes

Send your CAD drawing, schematic, or physical sample requirements today. Our senior application engineers provide full DFM feedback, stack-up diagrams, and custom sample estimates within 24 hours.