How We Work
The value chain that protects your product and your brand.
Co-design & DFM
We do not wait for a finished design. We help shape it
The most effective way to reduce manufacturing risk is to address it before manufacturing begins. KELD’s engineering team works alongside your designers from the earliest feasible stage, applying Design for Manufacturability (DFM) and Design for Testability (DFT) principles that ensure your product is not only functional but also efficiently producible, reliably testable, and cost-optimized. This co-engineering approach means fewer surprises during qualification, fewer engineering change orders during ramp-up, and a faster path from concept to series production.
WHAT THIS LOOKS LIKE IN PRACTICE
- Joint architecture review sessions with your R&D team.
- Component selection guided by availability, lifecycle, and compliance — not just datasheets.
- PCB layout optimization for automated assembly and in-circuit testing.
- Thermal, EMC, and environmental analysis integrated into the design phase.
- BOM cost analysis with alternatives mapped for supply chain resilience.
Industrialization & qualification
From validated prototype to production-ready product
Industrialization is the phase where many custom electronics projects fail or suffer costly delays. KELD applies a structured approach — informed by APQP (Advanced Product Quality Planning) principles — to ensure that the transition from engineering to manufacturing is predictable, documented, and low-risk.
KEY STEPS
- Prototype build and customer validation: functional and environmental testing with full documentation.
- Compliance and certification: laboratory testing for CE, UL, and application-specific standards.
- Control plan definition: inspection points, acceptance criteria, and process controls defined before series launch.
- Series-zero (pre-production run): final validation of the manufacturing process under production conditions.
- Production transfer: documented handover with all tooling, test programs, and quality records in place.
Flexible manufacturing model
Built for the complexity of custom OEM production.
KELD’s manufacturing facility in Zaragoza is designed for flexibility, not repetition. On any given day, our production lines may handle multiple product families, varying batch sizes, and different client specifications — all within the same quality management system.
WHAT FLEXIBLE MANUFACTURING MEANS FOR YOU
- Responsive production scheduling that accommodates your demand patterns, whether stable or variable.
- Rapid changeover capability that reduces lead times for multi-reference production.
- SMD and through-hole assembly, conformal coating, potting, and mechanical integration — all under one roof.
- Scalability from prototype quantities to sustained serial production without compromising quality or traceability.
This flexibility is not improvisation. It is the result of disciplined process engineering, purpose-built tooling, and a quality system designed for variety rather than uniformity.
Traceability by design
Every unit has a history. And it is always accessible
In custom OEM manufacturing, traceability is not a regulatory checkbox. It is an operational asset. When a field issue surfaces, when an audit requires evidence, or when a component change demands impact analysis, the ability to trace every unit back to its production data is what separates a trusted partner from an uncertain supplier.
WHAT WE TRACE
- Component lots and sourcing records.
- Production parameters: date, line, operator, test results.
- Firmware versions and configuration data.
- Quality inspection records and non-conformance history.
- Packaging and shipment details.
This level of traceability protects your brand, simplifies your quality investigations, and gives your compliance teams the evidence they need.
Lifecycle & change management
Your product does not end when it ships. Neither does our responsibility.
Electronic products exist in the market for years, often decades. During that time, components reach end-of-life, regulations evolve, and market expectations shift. KELD manages these changes proactively, ensuring your product remains available, compliant, and competitive.
WHAT LIFECYCLE MANAGEMENT INCLUDES
- Component obsolescence monitoring and proactive re-engineering.
- Regulatory change tracking and compliance updates for target markets.
- Design revisions for cost reduction, feature enhancement, or performance improvement.
- Firmware updates and version management with controlled rollout.
- End-of-life planning and transition support.
The goal is simple: your supply chain continues, your customers are served, and your product stays relevant — without you having to manage every technical detail.
Want to see how this works in practice?
Book a call with our engineering team and walk through how KELD’s process maps to your specific project requirements.