PCB & PCBA Frequently Asked Questions

What engagement models are available?

We offer full turnkey, partial turnkey, and consignment options to match different supply chain strategies.

How do you ensure product quality and consistency?

Through 100% AOI/X-ray, IPC-trained operators, and traceable data across every process stage.

Can you manage long-term or legacy programs?

Absolutely. We support lifecycle forecasting, component continuity, and stable output for extended production runs.

What is the main difference between flex and rigid-flex PCB assembly?

Flex PCBs are fully flexible circuits, while rigid-flex PCBs combine rigid and flexible layers to integrate both structural stability and flexibility in one design.

What materials are used for flexible and rigid-flex boards?

We typically use polyimide (PI), PET, and hybrid laminates with adhesiveless copper foils for enhanced flexibility, heat resistance, and signal performance.

How do you ensure the reliability of flex-to-rigid connections?

We use controlled lamination, hot-bar bonding, and reinforced stiffeners at bend transition zones, combined with bend-cycle and vibration testing for qualification.

Can you perform SMT on flexible circuits?

Yes. Our vacuum-assisted SMT lines and custom tooling stabilize flexible materials during pick-and-place and reflow, ensuring accurate, distortion-free assembly.

What testing methods are used for flex and rigid-flex assemblies?

We perform AOI, X-ray, flying probe, electrical continuity, and dynamic bend tests to verify both solder integrity and mechanical endurance.

Do you support both prototype and mass production of rigid-flex PCBs?

Absolutely. We provide rapid prototyping, pilot runs, and volume manufacturing with seamless process transfer—ensuring consistency across all production stages.

What is the difference between standard and HDI PCB assembly?

Standard PCBs use mechanically drilled through-holes and wider traces, suitable for moderate-density layouts.
HDI (High-Density Interconnect) boards, on the other hand, employ laser-drilled microvias, blind and buried vias, and sequential lamination to achieve higher interconnect density, shorter signal paths, and better high-frequency performance. This allows for more compact, faster, and lighter electronic designs.

What materials are used for HDI boards?

HDI PCBs require materials with excellent dielectric properties and dimensional stability.
Common materials include FR-4, high-Tg laminates, polyimide, and hybrid composites featuring low Dk/Df (dielectric constant/loss factor) for high-speed signal integrity. For RF or microwave designs, Rogers or Megtron-class laminates may be selected for enhanced low-loss transmission.

How do you ensure via reliability in HDI boards?

Via reliability is ensured through:
• Laser-drilled precision microvias with uniform plating thickness
• Copper filling and capping to strengthen stacked via structures
• Cross-section micro-analysis to verify via alignment and adhesion
• Thermal cycling tests and CAF (Conductive Anodic Filament) mitigation processes
All via structures are produced and inspected under IPC Class 3 standards, ensuring long-term electrical and mechanical reliability.