Extreme close-up of vacuum pick-up nozzle placing 0201 chip component onto solder paste on PCB pad, nozzle dominates frame, blue machine lighting

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.

ISO 9001
IPC-A-610
RoHS
UL
J-STD-001
SMT Process

Six-Stage Precision Assembly Line

Every board passes through six sequential stages with inline inspection at each critical node. No shortcuts, no skipped verifications.

1
Abstract geometric stencil printer representation with a rectangular frame and grid pattern suggesting solder paste deposits
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.

2
Solder paste inspection abstraction showing measurement grid over paste deposits on PCB pads
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.

3
Abstract pick-and-place machine representation with robotic arm and vacuum nozzle over a component grid, blue-tinted geometric style
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.

4
Abstract reflow oven representation showing a rectangular tunnel with warm gradient heat wave visualization inside a cool housing
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.

5
Abstract AOI inspection representation with camera lens element over a PCB and scan lines suggesting automated optical inspection
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.

6
X-ray inspection abstraction showing a circular BGA ball grid viewed through blue-tinted x-ray style overlay
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.

Technical Specifications

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
Production Equipment

SMT Line Equipment Overview

Each machine in the line is production-caliber, maintained to manufacturer specifications, and calibrated on a scheduled preventive-maintenance cycle.

High-speed pick-and-place machine abstraction with robotic arm and vacuum nozzle over component grid
High-Speed Pick & Place
45,000 CPH
160 Feeders
Modular platform with vision-centering on every pick cycle. Handles 01005 to 45 mm BGA.
Abstract reflow oven with warm gradient heat wave visualization inside cool housing
Reflow Oven
12 Zones
N2 Atmosphere
12-zone convection reflow with per-board thermal profiling. Nitrogen-capable for fine-pitch reliability.
AOI inspection machine abstraction with camera lens element over PCB and scan lines
AOI Machine
100% Coverage
Stages
Dual-stage automated optical inspection: post-placement and post-reflow. CAD-derived inspection library.
X-ray inspection abstraction showing BGA ball grid through blue-tinted x-ray overlay
X-Ray Inspection
<15% Max Void
AXI Type
Automated X-ray inspection for all BGA/QFN assemblies. Void analysis per IPC-7095 class 3 criteria.
Quality Assurance

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.