SMT Tape & Reel
Custom Cross 4-Legged Snap Dome Poly Metal Dome in Reel Packing
- AssemblySMT Pick-and-Place
- MaterialSUS301 Stainless Steel
- Actuation Force180g – 450g Customized
- PackagingCarrier Tape & Reel
Precision Component Portfolio
Engineered Tactile Solutions for Global OEM/ODM Applications
Manufactured from our high-precision facility in Dongguan, our tactile switches and dome arrays offer crisp mechanical actuation, milliohm-grade contact stability, and environmental ingress protection up to IP67.
EMI Shielded
Round Metal Snap Dome Sheet Adhesive Copper Foil Array
- ConfigurationHigh-Density Array
- ShieldingPure Copper Foil Layer
- Adhesive Layer3M 467MP / 3M 468MP
- Contact Resistance< 100 mΩ Initial
HMI Interface
Factory Direct Graphic Overlay Custom Membrane Keyboard Switch
- Surface SubstrateAutotex PET / Lexan PC
- Backer BaseFR4 / Aluminum Support
- Tail Termination1.0mm / 2.54mm Pitch
- Printing MethodPrecision Silk-Screen
Double-Sided EMI
Double-sided SUS301 Stainless Steel EMI Metal Dome Array
- Base MaterialJapanese SUS301-1/2H
- Plating TypeNickel / Selective Gold
- Air VentingInternal Venting Channels
- ProtectionElectromagnetic Ingress
Medical Grade
Customized Medical Instrument Membrane Switch PET Keypad
- Hygiene RatingAnti-Bacterial Texture
- DisinfectionAlcohol / Bleach Resistant
- FeedbackTactile Click + LED Window
- Operating Temp-20°C to +70°C Stable
Rapid Sampling
Round Metal Dome Array Single Layer Transparent PET Array
- Carrier FilmOptically Clear Mylar PET
- Shape StyleRound Snap Dome
- Travel Distance0.15mm – 0.35mm
- Standard Cycle500,000+ Depressions
Custom Embossed
Custom Embossed Metal Dome Tactile Buttons Graphic Overlay
- Embossing StylePillow / Rim Emboss
- Display WindowsDeadfront / Water Clear
- Ink SystemUV Curable Color Matching
- Ingress RatingFront IP65 Splashproof
Standard Stock
Metal Dome Array Single Layer Transparent PET with Adhesive
- Spacer Thickness0.05mm – 0.125mm
- Assembly ReadyPeel-and-Stick Liner
- Force Consistency±20 Grams Tolerance
- Lead Time3-Day Fast Turnaround
Regional Industrial Analysis
Precision HMI Localization for Barcelona’s High-Tech Industrial Hubs
From the industrial valleys of Vallès Occidental to the MedTech corridors around Parc de Recerca Biomèdica de Barcelona (PRBB) and the automotive clusters in Martorell, tactile interface design requires uncompromising mechanical precision and environmental resilience.
Catalan MedTech & Laboratory Devices
Barcelona stands as a top-tier European biomedical center. Medical diagnostics, surgical console controllers, and infusion monitors developed in Catalonia demand non-porous graphic overlays that withstand aggressive chemical wipe-downs (including 70% isopropyl alcohol, Cidex, and sodium hypochlorite). Our Autotex steel-textured PET films, coupled with sealed metal dome arrays, deliver crisp tactile actuation while maintaining an impervious IP67 antimicrobial barrier against bio-fluids.
Chemical Ingress & ISO 13485 Compliant StackupsAutomotive & Commercial Fleet Control
Anchored by facilities in Martorell and supporting Tier-1 automotive networks throughout the Zona Franca logistics corridor, local vehicle cockpits and heavy-equipment control pods face extreme Mediterranean thermal cycling and severe vibration. Our stainless steel SUS301-1/2H four-legged snap domes offer strict force tolerances (up to 450g) and custom venting channel paths, avoiding acoustic dampening and phantom triggers in high-vibration off-road or bus cabin environments.
AEC-Q200 Benchmark Testing & -40°C to +85°C StabilitySmart Packaging & Automation Machinery
The packaging and processing automation clusters spanning Sant Cugat, Terrassa, and Sabadell operate in high-throughput plant environments. Operator interfaces require unmistakable mechanical feedback that can be felt through thick work gloves. By incorporating gold-plated cross metal domes with custom pillow embossing, our switches guarantee over 1,000,000 actuation cycles without membrane contact fatigue or silver migration under sustained industrial shopfloor humidity.
Millisecond Actuation Feedback for Factory 4.0 Consoles
Material Selection Framework
Engineering Decision Matrix: Material Stack-Up Optimization
Selecting the optimal membrane layer configuration balances actuation physics, tactile ratio, chemical exposure, and unit manufacturing cost. Review our structural comparative baseline below.
| Substrate / Dome Technology | Primary Substrate Stack | Tactile Ratio & Travel | Ingress / Solvent Resilience | Lifespan (Cycles) | Target Catalan Applications |
|---|---|---|---|---|---|
| Polyester (PET) Tactile Dome Array | Autotex F150 / V150 Textured Polyester | 40% – 60% Snap Ratio | 0.25–0.40mm | IP65 to IP67; Resists MEK, Acetone, Bleach | > 1,000,000 | Surgical consoles, MedTech monitors, Lab centrifuges |
| Polycarbonate (PC) Flat Overlay | Sabic Lexan 8B35 Velvet Polycarbonate | Non-tactile flat or subtle pillow emboss | Moderate; Sensitive to aromatic solvents | > 500,000 | Indoor telecom racks, consumer IoT panels, test meters |
| SMT Cross Dome on Flexible FPC | Polyimide (PI) with Electro-deposited Cu | High snap tactile feel | 0.30–0.50mm | IP67 when laminated with double-sided 3M VHB | > 2,000,000 | Automotive dashboard switches, EV charging terminals |
| Double-Sided EMI Copper Shield Array | Rolled Copper Foil + Japanese SUS301 Domes | Crisp mechanical click | 0.20–0.30mm | Hermetically sealed edge barrier against RF | > 1,500,000 | Aviation avionics, high-noise servo motor drives |
Full In-House Engineering from Dongguan directly to El Prat Airport / Port of Barcelona
Dongguan Cevra Electronic Technology Co., Ltd. operates a vertically integrated 2,600㎡ production facility established in 2009. Unlike typical export trading intermediaries, every critical layer of your Human-Machine Interface—from graphic screen printing and optical CCD drilling to automated dome placement and cleanroom laminating—is executed directly by our 26 specialized technicians.
- SGS Group On-Site Verified
- ISO 9001 Quality System
- Fully Automated Laminating Lines
- CCD Vision Punching & Alignment
- Internal Dome Load Testing Lab
- Alibaba #5 Keypad Manufacturer
Our rigorous QA laboratory deploys electronic peel-tension analyzers, automated holding tack testers, electric pencil surface hardness gauges, and programmable high/low thermal chambers (-40°C to +120°C) to ensure zero delamination during transport across intercontinental freight routes.
Procurement & Technical Clarifications
Frequently Asked Questions by European Technical Directors
Direct technical answers addressing international customs, EU chemical directives (RoHS/REACH), tactile calibration, and logistics timelines to Catalonia.
What documentation and files are needed for Cevra engineers to start a DFM review for our Barcelona project?
To initiate a rapid Design for Manufacturability (DFM) assessment, provide vector artwork (Adobe Illustrator .AI, .PDF, or CorelDraw) with designated Pantone PMS or RAL color callouts, and a mechanical 2D/3D CAD drawing (DXF, DWG, or STEP) specifying dimensional tolerances, key embossing radii, LED window clear zones, and tail pinout diagrams. Our engineering department will evaluate trace resistance, dielectric clearances, and dome actuation spacing within 24 hours.
How do you guarantee compliance with EU RoHS 3 (2015/863) and REACH SVHC standards for shipments entering Spain?
Every raw material entering our Dongguan workshop—including Autotex PET, Sabic Lexan PC, Acheson conductive silver pastes, selective gold/nickel dome plating, and 3M pressure-sensitive adhesives—is accompanied by verifiable third-party SGS/TUV chemical analysis reports. We provide full certificates of conformance (CoC) and material composition declarations to ensure seamless customs clearance through the Port of Barcelona (Port de Barcelona) or Josep Tarradellas Barcelona-El Prat Airport.
What is the mechanical difference between 4-legged cross domes, round domes, and triangular snap domes?
4-Legged Cross Domes: Provide the highest tactile ratio (snap feel) and allow circuit traces to pass cleanly beneath the dome legs on single-sided PCBs or membrane circuits. Ideal for medical consoles and industrial controls.
Round Snap Domes: Offer a gentle, low-noise click profile with lower travel heights, making them suitable for ultra-compact handheld remotes and space-constrained enclosures.
Triangular Domes: Engineered for applications requiring exceptionally high actuation forces within narrow boundary constraints, providing distinct snap tactile feedback without requiring large pad real estate.
Round Snap Domes: Offer a gentle, low-noise click profile with lower travel heights, making them suitable for ultra-compact handheld remotes and space-constrained enclosures.
Triangular Domes: Engineered for applications requiring exceptionally high actuation forces within narrow boundary constraints, providing distinct snap tactile feedback without requiring large pad real estate.
How do Cevra’s metal dome arrays prevent air trapping and "pillowing" during rapid depressing cycles?
Rapid actuation can build internal pneumatic pressure if a membrane assembly is completely hermetic without ventilation. We engineer micro-venting channels laser-cut through spacer layers that interconnect dome cavities either to one another or to a rear breathing reservoir equipped with a hydrophobic, oleophobic GORE-style membrane patch. This guarantees a uniform click feel, prevents tactile damping, and protects the internal silver conductive circuits from moisture intake.
What are typical production lead times and DDP delivery schedules to industrial clients in Catalonia?
Engineering prototypes and initial first-article inspection (FAI) samples are generally dispatched within 5 to 8 working days following drawing lock-in. Mass production batches range from 12 to 18 working days depending on backlighting complexity. For express cargo to Catalonia, air freight via DHL/FedEx/UPS typically delivers in 3 to 5 business days directly to your plant in Sabadell, Terrassa, or Martorell, with customs-cleared DDP terms fully supported.