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JA EN DE FR ES RU JA Custom-engineered screen-printed conductive silver ink flexible circuits, thin-film pressure sensors, and tactile interface panels built to ISO 9001 quality standards for global OEM export.
Trondheim has firmly established itself as Norway's technological capital. Driven by world-leading research institutions like the Norwegian University of Science and Technology (NTNU), SINTEF, and the booming maritime tech cluster along the Trondheim Fjord (Trondheimsfjorden), local hardware developers face continuous pressure to innovate. From autonomous surface vessels and subsea acoustic telemetry to high-precision medical devices at St. Olavs Hospital and offshore green hydrogen control systems, the demand for compact, lightweight, highly durable Human-Machine Interfaces (HMI) and flexible conductive interconnects has surged dramatically.
Among these core electronic components, Silver Flex Circuits (Silver Ink Printed Flexible Polymer Thick Film Circuits) have emerged as the paramount solution replacing bulky traditional copper PCBs and rigid wiring harnesses. By utilizing high-purity micro-silver conductive pastes screen-printed onto flexible, thermally stable Polyester (PET) or Polyimide (PI) films, silver flex circuits deliver unmatched space-saving benefits, exceptional bendability, and significant cost advantages for Nordic engineering teams.
To assist procurement directors, system architects, and electrical engineers across Trøndelag in evaluating silver flex circuit technology, our engineering department at Dongguan Ravo Electronics Co., Ltd. has compiled the following comparative evaluation framework:
| Performance Characteristic | Silver Flex Circuit (PTF on PET) | Etched Copper Flexible Circuit (FPC) | Rigid FR-4 PCB Assembly |
|---|---|---|---|
| Conductive Material | Micro-Silver Paste (99.9% purity) | Rolled Annealed / Electro-deposited Copper | Copper Claddings on Fiberglass |
| Base Substrate Thickness | 0.05 mm – 0.175 mm (PET) | 0.025 mm – 0.05 mm (Polyimide) | 0.8 mm – 2.0 mm (Rigid Glass Epoxy) |
| Min. Sheet Resistance | < 0.015 Ω/sq/mil (High-Conductivity) | < 0.0005 Ω/sq/mil | Extremely Low (< 0.0001 Ω/sq) |
| Bend Radius & Flexibility | Superior (Dynamic flex capability) | Excellent (High density bending) | Zero Flexibility (Rigid structure) |
| Silver Migration Resistance | High (When encapsulated with Carbon/UV Curing) | N/A (Copper based) | N/A (Copper based) |
| Tooling & Prototyping Cost | Extremely Low (Digital screens & dies) | Moderate to High (Chemical etching tools) | High (Drilling, routing, Gerber tooling) |
| Rapid Sampling Lead Time | 3 – 5 Days (Fast-track dispatch) | 10 – 14 Days | 7 – 10 Days |
| Moisture Sealing Rating | IP67 – IP68 Compliant (Gasket Lamination) | IP65 – IP67 Compliant | Requires Conformal Coating / Housing |
How specialized OEM hardware manufacturers in the Trøndelag region utilize our custom flexible printed circuits to solve complex mechanical and environmental challenges.
In Trondheim’s thriving maritime and ocean engineering research centers, unmanned underwater vehicles (ROVs/AUVs) require ultra-lightweight, compact internal signal interconnects. Our silver flex circuits are manufactured with humidity-proof dielectric insulation and carbon paste capping over silver traces, preventing electrochemical silver ion migration even during high-humidity marine exposure. Integrated with 3M 467MP waterproof adhesive, these flexible arrays fit seamless within pressure-neutral housings.
Driven by the NTNU Health Technology cluster and biotech startups, local medical device developers require hygienic, wipe-clean control panels. We manufacture medical-grade tactile membrane switch panels and capacitive touch silver ink circuits featuring antimicrobial polyester graphic overlays (Autotex Fine/Velvet). Compatible with harsh surgical disinfectants, these flex circuits feature tactile stainless-steel metal domes rated for over 1,000,000 switch actuations.
Offshore wind monitoring gear, hydroelectric power plants, and remote weather measurement stations operating across Central Norway experience severe winter temperatures down to -40°C. Standard flexible plastics become brittle and crack. Ravo utilizes specialized cold-resistant PET films and conductive pastes with balanced plasticizers, maintaining dynamic flex fatigue resistance and reliable circuit continuity under arctic thermal shock cycles.
As the Norwegian economy accelerates its transition toward green digitalization, autonomous transport, and advanced maritime robotics, procurement dynamics in Trondheim have shifted noticeably over the last three years:
Founded in 2003 in Fenggang Town, Dongguan City—the world's premier manufacturing center for electronics—Dongguan Ravo Electronics Co., Ltd. has spent over 20 years perfecting the engineering and mass production of custom flexible printed circuits, membrane switch keypads, silicone rubber buttons, graphic overlays, and thin-film pressure sensors.
Our vertically integrated facility houses dusty-free Class 10,000 cleanrooms, high-precision automatic screen printing presses, CNC laser cutting machines, hydraulic embossing stations, and automated optical inspection (AOI) equipment under one roof.
Every single silver flex circuit and membrane keypad leaving our warehouse undergoes rigorous open/short circuit testing, contact resistance measuring, actuation force verification, and insulation resistance testing to guarantee zero-defect delivery to Trondheim.
Whether you require a single prototype piece for experimental trial at Trondheim’s Ocean Space Centre or high-volume series production scaling up to 500,000 units annually, Ravo’s dedicated export engineering division provides smooth communication, competitive factory pricing, and reliable air/express delivery directly to Trondheim Airport (TRD) or the Port of Trondheim.
Key technical and logistical inquiries answered directly by our Senior Flexible Circuit Engineering Team.
After your 2D/3D engineering drawings and artwork are finalized, prototype manufacturing takes 3 to 5 working days. Express air courier transit (via DHL/FedEx/UPS) directly to Trondheim typically takes 4 to 6 business days, ensuring your engineering team receives physical samples in less than two weeks total time.
Silver migration occurs when moisture and direct current voltage cause silver ions to bridge between adjacent conductive traces. To prevent this in marine or subsea electronics, Ravo over-prints all silver traces with a protective carbon ink capping layer, followed by a double-pass UV-cured dielectric insulation coating. This complete physical barrier blocks moisture contact and eliminates ion migration risk.
We accept vector artwork and circuit layout files in AutoCAD format (.DXF, .DWG), Adobe Illustrator (.AI, .EPS), Vector PDF, or Gerber format. Please include notes regarding circuit resistance limits, key actuation force, LED backlighting requirements, and mounting surface material so our engineers can recommend the optimal 3M adhesive stack-up.
Yes. By utilizing high-grade Autotex/Autostat heat-stabilized Polyester films and flexible silver pastes engineered with low glass-transition (Tg) binders, our silver flex circuits maintain functional structural integrity and electrical conductivity across operating temperature ranges from -40°C up to +85°C.
All export shipments from Ravo to Norway include standardized commercial invoices, packing lists with accurate HS codes (e.g., HS 8534.00 for printed circuits), Certificate of Origin (COO), and RoHS/REACH material declarations. Express couriers handle customs clearance upon arrival at Oslo or Trondheim, billing the applicable Norwegian MVA directly to your account.
We support rapid innovation with zero minimum order friction. Rapid engineering prototypes can be produced from as few as 1 to 5 pieces. For commercial production runs, standard production lots typically start at 100 to 500 pieces depending on part dimensions and layer complexity.
