PCB & PCBA FAQ

We accept all standard PCB design formats including Gerber RS-274X, ODB++, IPC-2581, and native design files from tools such as Altium Designer, KiCad, Eagle, and OrCAD. To ensure smooth production, we recommend including drill files, fabrication drawings, stack-up details, impedance requirements, and assembly data. Our engineering team reviews all files carefully before production to avoid errors and ensure manufacturability.

Yes, we provide a comprehensive Design for Manufacturability (DFM) review for every project. Our engineers analyze your design for potential issues such as trace width violations, insufficient spacing, annular ring problems, solder mask clearance, and drill tolerances. This helps identify risks early and ensures a smoother manufacturing process with higher yield.

Yes, we offer full PCB design and layout services, including schematic design, component placement, routing, and optimization. Our team is experienced in high-speed digital, RF, power electronics, and industrial applications. We ensure your design meets both electrical performance and manufacturing requirements.

Our standard capability is 4/4 mil trace and space. For advanced designs such as HDI, we can achieve 2/2 mil depending on materials and layer stack-up. All capabilities are verified during the DFM stage to ensure manufacturability.

Yes, we support multilayer PCB designs from 2 layers up to 20+ layers. We also assist with stack-up design to ensure proper impedance control, signal integrity, and thermal management.

Absolutely. We specialize in high-frequency PCB design using materials like Rogers and other low-loss laminates. We focus on impedance matching, signal integrity, and minimizing electromagnetic interference.

Yes, we provide customized PCB stack-up recommendations based on your application. We consider signal layers, power planes, impedance requirements, and cost optimization.

We ensure signal integrity through controlled impedance routing, differential pair matching, proper grounding, and EMI control techniques. This is especially critical for high-speed and RF designs.

We manufacture single-sided, double-sided, multilayer, HDI, rigid-flex, flexible, and metal-core PCBs. We also support specialized boards for RF, automotive, medical, and industrial applications.

We use a wide range of materials including FR4, high-Tg laminates, Rogers materials, aluminum substrates, and polyimide for flexible PCBs. Material selection depends on your application requirements.

Standard PCB production typically takes 3–7 working days. For urgent needs, we offer quick-turn services with delivery in as little as 24–48 hours depending on complexity.

We support up to 20+ layer PCBs including HDI structures with blind and buried vias.

Yes, we provide controlled impedance PCBs with precise calculations and verification to meet signal integrity requirements.

Yes, we support both small-batch prototypes and large-volume production with consistent quality and stable processes.

Yes, we optimize panelization to improve manufacturing efficiency and reduce assembly costs.

We follow strict IPC standards and perform multiple inspections including AOI, electrical testing, and final QC checks.

We provide full component sourcing services through authorized distributors and trusted suppliers to ensure authenticity and reliability.

We implement strict supplier verification, incoming inspection, and traceability systems to eliminate counterfeit risks.

Yes, our sourcing team can suggest cost-effective alternatives while maintaining performance and reliability.

We use a global sourcing network to locate alternatives or compatible components to avoid delays.

Yes, we support consigned, partial turnkey, and full turnkey assembly models.

We offer inventory management for long-term production projects.

Yes, we specialize in sourcing hard-to-find and obsolete components through reliable channels.

Yes, we manage complex BOMs with strict quality and traceability control.

We offer complete SMT assembly services including stencil printing, pick-and-place, and reflow soldering.

Our SMT lines support high-speed placement with high accuracy for both small and large batch production.

We support 0201, QFN, BGA, CSP, and other fine-pitch components.

Yes, we provide high-precision laser-cut stencils optimized for solder paste application.

We use high-quality solder paste and precise temperature profiles during reflow.

Yes, we support double-sided assembly with precise alignment and process control.

Yes, we support SMT + through-hole mixed assembly.

Yes, we provide fast SMT assembly for urgent prototypes.

We provide turnkey, partial turnkey, and consigned PCB assembly services.

Yes, we support both manual and wave soldering for through-hole components.

Yes, we handle high-density and complex PCB assemblies with advanced equipment.

We serve automotive, medical, industrial, telecom, and consumer electronics industries.

Yes, we offer full box build and final product assembly services.

We use AOI, X-ray inspection, and functional testing.

Assembly typically takes 3–10 days depending on complexity.

Yes, we specialize in quick-turn prototype assembly.

We offer DHL, FedEx, UPS, air freight, and sea freight options.

Express shipping typically takes 3–7 days worldwide.

Yes, we ship to customers worldwide.

We assist with customs documentation to ensure smooth clearance.

Yes, full tracking information is provided for all shipments.

Yes, we prioritize urgent orders with fast logistics solutions.

Yes, we use anti-static and protective packaging.

Yes, we handle both small parcels and bulk shipments.

We follow IPC-A-600, IPC-A-610, and ISO quality standards.

We perform AOI, X-ray, and manual inspections at multiple stages.

Yes, full traceability is maintained for materials and processes.

We implement corrective actions and continuous improvement processes.

Yes, test reports can be provided upon request.

We comply with ISO and industry certifications.

Yes, including thermal and environmental testing.

We use standardized processes and strict QC control.

Yes, we provide full technical and customer support after delivery.

We investigate and provide replacement or solutions quickly.

Yes, we provide warranty based on project terms.

Yes, we assist with design improvements if needed.

Typically within 24 hours.

Yes, our engineers are available for support.

Yes, we support long-term partnerships.

Yes, we continuously improve based on feedback.

We perform flying probe and fixture testing.

Yes, all boards undergo electrical testing.

Yes, we support complex PCB testing.

Yes, detailed reports are available.

Open circuits, shorts, and connectivity issues.

Yes, based on customer requirements.

High precision with advanced equipment.

Yes, tailored to your product.

AOI uses optical inspection to detect defects in PCBs.

Solder defects, missing components, polarity issues.

Yes, AOI is standard in our process.

It is combined with other inspections like X-ray.

Yes, both sides are inspected.

High accuracy with automated systems.

Yes, upon request.

No, hidden defects require X-ray.

TOPFAST is a professional PCB and PCBA manufacturer providing end-to-end solutions from design to delivery.

We combine engineering expertise, quality control, and global service.

We operate globally with manufacturing in Asia.

Yes, most of our customers are from Europe and North America.

Industrial, automotive, medical, and telecom.

Yes, we help startups with prototypes and scaling.

Yes, we support high-volume production.

We deliver reliable quality, fast turnaround, and professional support.