Our SMT lines are equipped for today's most demanding component packages:
SMT Line Specifications:
Most real-world boards combine SMT and THT components. Our mixed-technology process handles the sequencing without compromising either assembly type:
Before assembly begins, our process engineers perform a Design for Assembly (DFA) review:
We source components through authorized distributors including Digi-Key, Mouser, Arrow, Avnet, and Future Electronics — ensuring genuine parts with full traceability.
| Inspection Method | What It Catches |
|---|---|
| AOI (Automated Optical Inspection) | Missing parts, polarity errors, bridging, lifted leads |
| SPI (Solder Paste Inspection) | Insufficient paste, smearing, offset |
| X-Ray Inspection | BGA void analysis, solder joint integrity under packages |
| ICT (In-Circuit Test) | Opens, shorts, component value verification |
| FCT (Functional Test) | Board powers up and performs its intended function |
| Manual Visual Inspection | IPC-A-610 Class 2/3 final inspection |
Our PCBA assembly processes are governed by industry-leading quality standards:
Class 3 assembly for mission-critical applications: medical life support, aerospace, automotive safety systems — where no solder joint can be left to chance.
| Capability | Specification |
|---|---|
| Min. Component Size | 01005 (0.4mm × 0.2mm) |
| Min. BGA Pitch | 0.3mm |
| Min. QFP/QFN Pitch | 0.3mm |
| Placement Accuracy | ±0.025mm (3σ) |
| Board Size (Max) | 600mm × 450mm |
| Board Thickness | 0.4mm – 6.0mm |
| Solder Paste Inspection | 100% SPI every board |
| X-Ray Inspection | AXI for BGA and hidden joints |
| IPC Standard | Class 2 and Class 3 |
| Conformal Coating | Acrylic, PU, Silicone, Epoxy |
| Certifications | ISO 9001, ISO 13485, IATF 16949 |
AI / Edge Computing High-pin-count GPU module assembly, memory stack mounting, high-speed SerDes connector placement — we handle the complexity of AI hardware assembly without compromising signal integrity.
Automotive IATF 16949 quality management, AEC-Q qualified components, and Class 3 soldering for safety-critical automotive ECUs and ADAS sensor boards.
Medical ISO 13485 certified assembly for patient-monitoring devices, imaging equipment, and diagnostic instruments. Full lot traceability, controlled ESD handling, and FDA QSR 820 documentation support.
Industrial High-reliability assembly for PLCs, motor drives, industrial IoT gateways — including conformal coating for harsh environments.
Power Electronics Heavy copper board assembly, high-current connector installation, and thermal interface material application for power conversion and energy storage systems.
| Service Mode | What You Supply | What We Handle |
|---|---|---|
| Full Turnkey | Design files + BOM | Components, PCB, assembly, test, shipping |
| Partial Turnkey | Some components + PCB | Remaining components + assembly + test |
| Consigned (Kit) | All components + PCB | Assembly + test only |
Most customers start consigned for prototypes, then move to partial or full turnkey for production — simplifying their supply chain and reducing total cost.
One supplier, complete solution. We manufacture the bare PCB and assemble it in-house — eliminating inter-supplier communication delays, reducing risk, and giving you a single accountable partner.
Engineering depth. With 6 in-house design centers, our engineers understand your design, not just your Gerber files. When an assembly issue arises, we debug it at the design level — not just the process level.
Transparent quality data. Every board comes with full inspection reports: SPI data, AOI results, X-ray images for BGAs, and functional test logs. You know exactly what left our facility.
Submit your Gerber files, BOM, and assembly drawing — we'll provide a detailed quote with DFA feedback within 24 hours.
Have complex requirements? Contact our assembly engineering team to discuss your specific needs.
Founded in 1997 and headquartered in Shenzhen, KINGBROTHER specializes in electronic interconnection technologies and hardware innovation. We focus on electronic product R&D, AI hardware solutions, engineering services, integrated design and manufacturing, and supply chain capabilities to deliver comprehensive PCB manufacturing, IPD (Integrated Product Development), and EMS services.
We are committed to becoming a world-class AI hardware solutions and manufacturing service provider, offering one-stop solutions for AI robots, industrial control, medical devices, new energy, and automotive electronics, helping our customers accelerate innovation and bring products to market faster.
We adhere to systematic design as our foundation, offering hardware, software, and industrial design services. With 6 self-owned design centers and a knowledge base including 3.27 million certified materials and 2,368 DFI rules, we significantly reduce design iterations by 60-80% and increase customer project success rates by 35%.
We have built an integrated technology chain from IC design IPD and PCB to integrated product manufacturing IPI. With 300+ technical solutions and over 2,500,000 product models and project verifications, we achieve closed-loop collaboration and optimization throughout the hardware innovation process.
Through strict QIS quality management systems and full-chain engineering empowerment via DF8, failure analysis, and process control, we eliminate 90% of pad defects and 70% of assembly risks, ensuring product safety for our customers.
Leveraging 5 IPI smart manufacturing bases and a cloud alliance of over 100 factories, we have established a flexible production system for small-batch, multi-batch needs. Our mature global supply chain ensures quick response and delivery, especially in component procurement.
With 29 years of expertise in high-end and specialty PCBs, we deliver reliable and flexible manufacturing solutions. We offer prototyping, quick-turn, and small-to-medium volume PCBs, including multilayer, HDI, high-copper, and rigid-flex boards, backed by a one-stop PCB service that empowers clients across industries, from AI hardware to cutting-edge electronics, to accelerate product innovation and bring ideas to market faster.
Reliable AI hardware solutions with full-lifecycle supply chain support. We provide highly reliable electronic manufacturing services. Our integrated PCBA, BOM management, NPI engineering and advanced failure analysis to guarantee reliable performance at every stage.
We focus on independent design house (IDH) and CAD design, providing AI hardware solutions and covering services such as hardware design, software design, industrial design, and EDA development.
100% Complete & Professional Solutions: From Design to Manufacturing.
