SMT Assembly
High-speed surface-mount technology from 01005 passives to fine-pitch BGAs. Automated precision at every placement, verified by 3D SPI and dual-stage AOI.
Six-Stage Precision Assembly Line
Every board passes through six sequential stages with inline inspection at each critical node. No shortcuts, no skipped verifications.
Solder Paste Printing
Laser-cut stainless steel stencils precisely matched to your pad geometry. Fully automatic printer with fiducial alignment ensures deposit accuracy of ±25 μm at six-sigma repeatability. Stencil cleaning frequency optimized per paste type and board density.
Solder Paste Inspection (3D SPI)
Inline 3D SPI on every single print. The system measures paste volume, area, height, and offset against the golden board profile with micron-level accuracy. Any deviation triggers an immediate line stop and correction before components are placed. This single gate eliminates the leading cause of post-reflow defects.
Pick & Place
High-speed modular placement platform with 160 feeder positions and vision-centering on every component. Handles the full range from 01005 (0.4 mm × 0.2 mm) passives through 45 mm square BGAs. Closed-loop positional feedback verifies placement accuracy on every cycle. Placement speed of 45,000 CPH sustained across the production run.
Reflow Soldering
Twelve-zone convection reflow with real-time thermal profiling per board type. Each profile is validated against IPC/JEDEC J-STD-020 requirements for the specific component set and board mass. Nitrogen atmosphere available for high-reliability and fine-pitch applications where oxidation control is critical. Profile data is archived with the batch record for full traceability.
Automated Optical Inspection (AOI)
Dual-stage AOI: post-placement and post-reflow. 100% coverage on every board. The system checks for solder bridging, insufficient solder, tombstoning, lifted leads, component presence, polarity, and offset against the CAD-derived inspection library. Defect images are saved to the batch record. Any board that triggers a defect flag is quarantined for manual review.
X-Ray Inspection
Automated X-ray inspection (AXI) for BGA, QFN, and other hidden-joint packages. Detects voiding, insufficient solder, head-in-pillow, and non-wetting defects that optical systems cannot see. BGA void rate is verified against IPC-7095 criteria. Every BGA assembly receives X-ray inspection as a standard step, not an optional add-on.
SMT Capability Parameters
Verified specifications for our SMT assembly line. Every parameter below is measured against actual production data, not manufacturer nominal ratings.
| Parameter | Specification |
|---|---|
| Max Board Size | 510 mm × 460 mm |
| Min Board Size | 50 mm × 50 mm |
| Board Thickness | 0.4 mm – 4.5 mm |
| Min Component Size | 01005 (0.4 mm × 0.2 mm) |
| Max Component Height | 25 mm |
| BGA Pitch (Minimum) | 0.3 mm |
| Placement Speed | 45,000 CPH |
| Number of Feeders | 160 (8 mm equivalent) |
| Reflow Zones | 12 (convection, nitrogen-capable) |
| AOI Coverage | 100% post-placement + post-reflow |
| Solder Paste Inspection | 3D SPI on every print |
| X-Ray Inspection | AXI standard for all BGA/QFN assemblies |
SMT Line Equipment Overview
Each machine in the line is production-caliber, maintained to manufacturer specifications, and calibrated on a scheduled preventive-maintenance cycle.
Certifications Governing SMT Production
Every SMT assembly run is executed, inspected, and accepted against the following standards. These are not marketing claims — they are audited, certified, and maintained through ongoing surveillance.
IPC-A-610 Class 3
Acceptability of Electronic Assemblies — the highest performance class. All SMT assemblies are inspected and accepted to Class 3 criteria for high-reliability electronic products where performance on demand is critical and downtime cannot be tolerated.
ISO 9001:2015
Quality management system certified end-to-end. From incoming material control through in-process verification to final outgoing inspection, every step operates under documented procedures with measurable quality objectives and corrective-action loops.
J-STD-001
Requirements for Soldered Electrical and Electronic Assemblies — the process standard governing materials, methods, and verification criteria. All soldering operations, operator training, and process control documentation comply with J-STD-001 requirements.
Request an SMT Assembly Quote
Upload your Gerber files and BOM. We respond with a complete technical and commercial quotation within 24 hours.