High-speed, high-accuracy surface mount assembly for prototypes and mass production. Handling everything from 01005 components to complex BGA with 100% AOI inspection.
Support for BGA, QFN, and 01005 parts.
State-of-the-art pick-and-place lines.
We source, we build, we test, you grow.

Using high-precision stencils and SPI (Solder Paste Inspection) to ensure a perfect foundation.

Optimized thermal profiling to ensure strong, reliable solder joints without damaging sensitive parts.

Automated machines placing components with micron-level accuracy.

100% Automated Optical Inspection and 3D X-Ray for BGA/hidden joints.
01005 Ready: We are equipped with advanced machinery to handle ultra-miniature components, ideal for wearable technology and miniaturized medical devices.
BGA Expertise: We offer professional BGA reballing and rework services, supported by 3D X-Ray inspection to ensure the integrity of hidden solder joints.
Component Integrity: Our strict ESD (Electrostatic Discharge) management and moisture-control protocols ensure all components remain in optimal condition prior to placement.
Rigorous Quality Control: A comprehensive inspection suite featuring SPI (Solder Paste Inspection) + AOI (Automated Optical Inspection) + X-Ray Inspection + FCT (Functional Testing).
| Feature | SMT Capabilities |
|---|---|
| Min. Component Size | 01005, 0201, 0402 |
| Fine Pitch Parts | BGA, Micro-BGA, QFN, CSP, PoP (Package on Package) |
| BGA Pitch | Down to 0.3mm |
| Max. Board Size | 500mm x 450mm (Can be adjusted according to actual circumstances) |
| Mounting Speed | 50,000+ CPH (Chips Per Hour) |
| Compliance | IPC-A-610 Class 2 & Class 3 |
SMT Assembly (Surface Mount Technology Assembly) is the process of mounting and soldering electronic components directly onto the surface of a printed circuit board (PCB). Unlike traditional through-hole assembly, SMT Assembly does not require drilling holes through the board. At Tengxinjie, our SMT PCB Assembly services handle components as small as 01005 with high-speed pick-and-place machines, achieving over 50,000 chips per hour. This technology enables smaller, lighter, and more reliable electronic products.
SMT PCB Assembly mounts components directly onto the board surface using solder paste and reflow soldering. Traditional through-hole assembly requires component leads to pass through drilled holes. PCB SMT Assembly offers several advantages: higher component density, faster production speeds, better performance at high frequencies, and lower manufacturing costs for high-volume production. Most modern electronics—from smartphones to medical devices—rely on SMT PCBA for their compact, high-performance designs.
Our SMT Service handles a full range of surface mount components, including:
Ultra-miniature passives: 01005, 0201, 0402
Fine-pitch ICs: BGA, Micro-BGA, QFN, CSP
PoP (Package on Package) and QFP packages
Connectors, diodes, transistors, and LEDs
Whether you need a SMT Circuit Board for simple consumer electronics or complex industrial controls, our equipment and expertise deliver precision placement every time.
A SMT PCB Board is a printed circuit board designed specifically for surface mount components. Unlike boards intended for through-hole parts, SMT PCB Boards have solder pads on the surface rather than holes. This design allows for double-sided component placement, higher circuit density, and automated assembly. As a full-service PCB SMT provider, Tengxinjie can build SMT PCB Boards ranging from simple single-layer designs to complex 32-layer HDI structures.
Our SMT Manufacturing service is a complete turnkey solution. We provide:
PCB fabrication (rigid, flex, or rigid-flex)
Component sourcing from authorized distributors
Solder paste stencil design and printing
High-speed pick-and-place SMT Placement
Reflow soldering with optimized thermal profiling
100% AOI, SPI, and X-Ray inspection
Functional testing and programming
Box build assembly and packaging
From SMT Prototype Board to full production, we handle everything under one roof.
Yes. Our SMT Production lines are flexible to accommodate any order quantity. For SMT Prototype Board projects, we offer fast turnaround (as quick as 24-48 hours) with no minimum order quantity. For high-volume SMT Production, our automated lines achieve over 50,000 chips per hour, ensuring consistent quality and competitive pricing. Whether you need 5 boards or 500,000, our SMT Factory is equipped to deliver.
A SMT Package from Tengxinjie is a fully documented assembly service that includes:
Engineering review and DFM check
Solder paste stencil fabrication
SMT Placement and reflow soldering
AOI and X-Ray inspection
Functional testing
Clean, vacuum-sealed packaging for shipment
We also offer custom SMT Package options for clients requiring additional services such as conformal coating, IC programming, or box build assembly.
SMT Board Assembly mounts components on the board surface using solder paste and reflow ovens. Through-hole assembly requires component leads to pass through drilled holes and is typically wave-soldered. SMT Board Assembly is faster, allows for smaller components, and supports double-sided mounting. However, some components (large connectors, transformers) still require through-hole for mechanical strength. Most modern projects use SMT Assembly Service as the primary method, with selective through-hole for specific parts.
Our SMT Plant is located in Shenzhen, China, within a 70,000+ sqft ISO-certified facility. We operate state-of-the-art SMT PCB Manufacturing lines including high-speed pick-and-place machines, reflow ovens, SPI, AOI, and 3D X-Ray inspection systems. Our SMT Factory is equipped to handle SMT In Manufacturing processes compliant with IPC-A-610 Class 2 and Class 3 standards, RoHS, and ISO 9001:2015.
Getting a quote for our SMT Assembly Service is simple:
Prepare your Gerber files and BOM (bill of materials)
Submit your files through our online quote request form
Our engineering team reviews your design and performs a free DFM check
You receive a detailed quote within 12-24 hours
We offer competitive pricing for both SMT Prototype Board and high-volume SMT Production. Contact our SMT Factory today to start your project.






All the pcbs looks good, i run some test and all working perfect! The soldering quality is good as well, i might place another order very soon.


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