Wide establishing shot of a printed circuit board surface with intricate copper traces spreading across dark fiberglass substrate, flat even lighting with no central focal point, revealing the geometric precision of PCB design

Precision PCB Assembly
From Prototype to Production

ISO-certified SMT, through-hole, and mixed-technology assembly with industry-leading first-pass yield rates. Engineering precision at every node.

ISO 9001:2015 IPC-A-610 Class 3 UL Certified
ISO 9001
ISO 13485
IPC-A-610
UL
RoHS
What We Do

Full-Spectrum PCB Assembly Services

Three specialized assembly lines under one roof. From micro-scale SMT to heavy-leaded through-hole, we handle the full complexity spectrum.

Abstract geometric representation of an SMT production line with simplified machine shapes and copper trace-like connecting lines in isometric view

SMT Assembly

High-speed surface-mount technology for dense, miniaturized designs. From 0201 passives to fine-pitch BGAs, our automated lines deliver consistency at scale.

Max Board
510 × 460 mm
Min Component
0201 / 01005
BGA Pitch
0.3 mm
Placement Rate
75,000 CPH
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Abstract representation of DIP through-hole assembly with vertical component leads entering board holes and stylized wave shape below in isometric line-art style

DIP Assembly

Precision through-hole assembly for connectors, transformers, and high-power components. Wave and selective soldering with full lead-free process capability.

Max Board
600 × 500 mm
Wave Solder
Lead-Free
Inspection
AOI + Manual
Conformal Coat
Available
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Abstract mixed assembly illustration showing SMT and through-hole components coexisting on a single board with two process flows merging in isometric line-art

Mixed Assembly

Boards requiring both SMT and through-hole technologies. We manage process sequencing, thermal compatibility, and component clearance so you do not have to split orders.

Technology
SMT + DIP Single Board
Process Flow
SMT-First, Then DIP
Testing
Full Functional
Box Build
Available
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Why Uppcba

Engineering Rigor Meets Production Speed

We are not a broker. Every board is assembled on our own lines by technicians who inspect their own work. Our process is built around three principles that define every project we take on.

No Minimum Order Quantity One prototype or ten thousand units — same line, same standards, same attention to detail. We built our workflow to handle both extremes efficiently.
Full In-House Process Control Solder paste printing, pick-and-place, reflow, wave soldering, AOI, X-ray, and functional testing all under one roof. No subcontracting means no accountability gaps.
Engineer-Led DFM Review Every design receives a free manufacturability review before production begins. We flag potential issues — pad geometry, thermal relief, component spacing — before they become rework.
20+
Years of Engineering Experience
10,000+
Projects Delivered
99.7%
First-Pass Yield Rate
Our Process

From Design Review to Final Test

Five precision stages. Every board passes through each gate before it ships. No shortcuts, no skipped inspections.

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

Design Review & DFM

We analyze your Gerber files, BOM, and assembly drawings. Every pad geometry, thermal relief, and clearance is checked before a single stencil is cut.

2
Abstract pick-and-place machine representation with robotic arm and vacuum nozzle over a component grid, blue-tinted geometric style

Stencil & Solder Paste

Laser-cut stainless steel stencils matched to your pad geometry. Automated solder paste inspection (SPI) verifies deposit volume, area, and height on every pad before components land.

3
Abstract reflow oven representation showing a rectangular tunnel with warm gradient heat wave visualization inside a cool housing

Pick & Place

High-speed placement with vision-centering on every component. Our lines handle 0201 passives through 45 mm square QFPs with closed-loop positional feedback on every cycle.

4
Abstract AOI inspection representation with camera lens element over a PCB and scan lines suggesting automated optical inspection

Reflow Soldering

Multi-zone reflow with real-time thermal profiling per board type. Nitrogen atmosphere available for high-reliability applications. Every profile is validated against IPC/JEDEC J-STD-020.

5
Abstract functional test representation with probe pins contacting test points on a PCB and electrical signal visualization as glowing lines

AOI & Functional Testing

Automated optical inspection catches solder defects at micron scale. Functional testing verifies your board behaves exactly as designed — power-up, signal integrity, full boundary scan where applicable.

Start Your Next Production Run

Upload your BOM and Gerber files. We respond with a complete quotation within 24 hours.