PCB Assembly

Professional PCB Assembly Services (SMT, THT & Cable Assembly)

Mango Solution provides complete PCB assembly services for OEMs, EMS providers, and small/medium enterprises in industrial control, IoT, networking, AI electronics, medical devices, and consumer electronics.

With over 10 years of experience, our team ensures that each project benefits from pre-verified components and BOM-level risk mitigation. We deliver high-quality SMT, THT, and cable assembly for prototypes, pilot runs, and production while maintaining reliability, cost-efficiency, and schedule compliance.

Why Choose Mango Solution for PCB Assembly?

Complete Turnkey Assembly Solutions

We manage the full production cycle: component sourcing, SMT/THT assembly, testing, and packaging. Each step is engineered for quality and BOM verification.

Advanced SMT Assembly Capabilities

Handle fine-pitch ICs, 0201 components, BGA, QFN, LGA packages

Support multi-layer, high-density PCBs

High-Quality THT Assembly

Selective and wave soldering for through-hole components

Mechanical strength and long-term reliability ensured

THT lines supported by engineering supervision and BOM compliance

Professional Cable & Wire Harness Assembly

Custom cable assemblies and harnesses

Connector crimping, cutting, stripping, terminal pressing

Control panel assembly

Flexible Prototyping & Production

Prototypes, low-volume runs, large-scale production

Production workflows adapted to order size and timeline

Strict Quality Control

Multi-stage inspections: AOI, X-ray, functional and in-circuit testing

Visual/manual checks per IPC-A-610 and ISO 9001 standards

Samples

SMT Technology

Mango Solution SMT PCB Assembly Service
Mango Solution is one of 10+ year ISO 9001 certified PCB assembly manufacturers in China, We offer high quality SMT assembly services with cost-effective price and quick buildtime for customers from various industries. With our advanced automated SMT assembly production lines, we can support both single or double-sided placement of all types components. Meanwhile we have strict quality control system to guarantee the demands of different customers.

SMT Assembly Procedure

Step 1

Materials Preparation

All components in BOM list,PCB bare boards, and stencils will be inspected before SMT assembly. All of these materials are from our long-term reliable supply chain with good quality. Bare boards and components will be baked in the oven in order to keep the excellent assembly effect when necessary.

Step 2

Solder Paste Printing

The solder paste are used to connect the components with the pads on PCB boards, and they play a very important role in SMT assembly quality control. Therefore we will inspect it before SMT procedure. And we use automatic solder paste printer to improve production efficiency, reduce defective rate and rework cost.

Step 3

SMT Placement

The printed bare boards are put into the pick& place equipments then the JUKI automatic high-speed machines will place the components on pads printed with the solder paste. The placement speed 42,000CPH. Maxim PCB size is 650mm*370mm.

Step 4

Reflow Soldering

The PCBs are put into the reflow soldering oven and the electronic components will be firmly fixed on the pads of boards. Our reflow soldering oven has 8 temperature zones and we always apply different temperature profiles for different projects.After pick & place machines, the PCBs are put into the reflow soldering oven where the solder paste will melt and solidify and the electronic components will be firmly fixed on the pads of PCB boards. PCBbee’s reflow soldering ovens have 10 temperature zones and we always design and apply different temperature profiles for different PCBA projects.

Step 5

First article Inspection

After step 4, we will proceed the first article inspection which can find whether it is 100% consistent with the customer’s request and whether the components are placed properly or not. We can find the problem in the first article inspection in order to guarantee the batch assembly 100% correct and reduce the rework cost and time.

Step 6

Automated Optical Inspection (AOI)

All PCB boards will be tested by AOI equipments after SMT production finished. It can effectively find the polarity errors, leaks, deviations, damage, empty soldering etc. It is a very critical step to ensure the quality control of SMT production.

Step 7

X-Ray Testing

As for the boards with BGA, CSP, LGA,QFP components etc, we usually use X-Ray tester to monitor the SMT assembly production process. It can find the soldering problems and prevent the occurrence of open circuit, short circuit, leaks etc.

THT assembly

PCB Through-hole Assembly Service
Compared with surface mounted technology assembly, the through-hole technology assembly plays a role in mechanically connecting the components and PCBs. THT assembly is also a more complex and time-consuming manual work which easily causes some mistakes. We have 2 THT assembly lines from prototype to big volumes. All the staff are much trained workers for more than 3–8 years experiences to perform the THT assembly process, and the automatic Multi-In-One Inspection equipment which can test the PCB with SMD and TH components.

THT Assembly Capability

Mango Solution can supply the following THT assembly service:
– Incoming quality Inspection for through-hole components
– Manual Placement of Components for PCBA prototypes and batch orders
– RoHS compliant Soldering
– ESD and Multi-In-One AOI Inspection and functional testings
– Munual inspection and rework
– Conformal Coating
– THT Assembly for various materials like connectors,cables, fans, LEDs,heats sinks, plugs, sockets & screws etc
– Wave soldering for batch request
– One-stop box build

Assembly Equipments

PCB Assembly Capability

Item	Description
Assembly types	SMT + THT, wire harness assembly, cable assembly, box build
PCB Type	1-24 Layers, rigid or flexible, single-sided or double-sided placement
PCB Finish	HASL, Electrolytic Au, Electroless Au, Electroless Ag, Immersion Au, Immersion Tin, OSP
Assembly Capacity	5 Million Placements Per Day
Max Board Size	Max: 600×500mm, Min: 50×50mm
Min Component Size	0201–54 sq.mm. (0.084 sq.inch), Connector, CSP, BGA, QFP, pitch 0.25mm
Stencils	Laser cut stainless stencil with or without frame. Free of charge for repeated orders
Quantity	≥5 pcs (Prototypes & Low/High Volume PCB Assembly)
Type of Service	Turn-Key PCBA, electronic components sourcing or PCB fabrication
PCB Inquiry Files	PCB file formats: Gerber file, .PCB DOC, PCB, CAM file, etc.
Bill of Materials (BOM)	BOM usually includes value/description, package type, manufacturer, and part number
Pick & Place File	Should include Surface Legend (top/bottom), X/Y coordinates, part number/specification, rotation. 3D files or schematics if necessary
Testing	Visual QC check, AOI Inspection, ICT, X-RAY test, Software Burn-in, Function Test
Packages	Anti-static bubble bags, anti-collision protection, hard cardboard carton protection
Lead Time	2 days for prototypes or based on order volume

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