PCB Assembly Services

Complete Turnkey PCB Assembly Service | Starting from $29 for 10 Pieces
Prototype PCB Assembly: Design → Sourcing → Production → Delivery
24-Hour Rapid Prototyping | Loongson Primary Distributor

PCB assembly refers to printed circuit boards populated with electronic components, commonly known as PCBA. It is a key step in the post-production process of PCBs.

We offer high-quality PCB assembly services at highly competitive prices and with flexible terms. With mature processes and cost-optimized solutions, our services stand out in the market.

We ensure fast turnaround and strict quality control, with no minimum order quantity (MOQ) required — whether for prototypes or small batches.
We accept orders for samples and prototypes with fast delivery and guaranteed quality.From simple boards to high complexity multi material boards. Low, medium or high volume.

We support both full turnkey (we handle everything) and partial turnkey (you supply some of the components) assembly services.

PCBA Projects

PCBA Manufacturing Services

We specialize in high-quality PCB assembly, serving industries including:

Custom Requirements?
For specialized industries or innovative product development, we offer tailored PCBA solutions to meet your unique needs.

Medical Devices – High-precision, reliable electronic solutions
Industrial Electronics – Rugged and durable designs for harsh environments
Smart Robotics – Core control boards & sensor integration
Computing & Storage – High-speed data processing and storage solutions
Communication Networks – 5G/IoT and telecom equipment assembly
Automotive Electronics – Automotive-grade electronic systems
Consumer Electronics – End-to-end support from prototyping to mass production
Smart Home – IoT and intelligent control modules

PCB Assembly Capabilities

Item	PCBA Manufacturing Capability	Process Details
Minimum Order	1 piece accepted	We recommend clients produce at least 5 samples for their own analysis and testing
Production Capacity	SMT: 4 million points/day THT: 500k points/day 50-100 models/day
Component Sourcing Service	Full Component Procurement End-to-end component sourcing service	Covers various components with mature PCBA sourcing management system for cost-effective OEM projects
	Assembly Only Client provides components	Client supplies components and bare PCBs. For quality assurance, all components must be in reel, tape or tube packaging suitable for machine mounting
	Partial Procurement Client provides core/special components	We procure standard components while client provides key parts. Customer convenience is our guiding principle
PCBA Soldering Types	Double-sided SMT, SMT, THT	We provide surface mount (SMT), through-hole (THT) or mixed assembly services
Solder Paste/Wire/Bars	Lead & Lead-free (RoHS compliant)	We offer customized solder paste with different metal content per client requirements
Stencil	Laser stencil	Laser-cut stencils ensure IPC-2 Class or higher standards for fine-pitch ICs and BGAs
Component Size	Passives: 01005 (0.4mm × 0.2mm), 0201
Component Size	High-precision ICs (BGAs)	X-ray inspection for BGAs with min 0.25mm pitch
Component Packaging	Reels, cut tape, tubes, trays, bulk	SMT components must be machine-mountable (reels/tapes/tubes). THT accepts bulk packaging
Placement Accuracy (100FP)	0.0375mm full-process accuracy
Supported PCB Types	Rigid (FR-4, metal core), Flex (FPC), Rigid-Flex, Aluminum
PCB Dimensions	Min: 50mm × 50mm	Paneling required for smaller sizes. Recommended >100mm × 100mm for efficiency
PCB Dimensions	Max: 400mm × 1200mm	Industry-leading processing size
PCB Thickness	0.3mm ~4.5mm
File Formats	BOM PCB (Gerber/design files, coordinate files)
Quality Control	IQC: Incoming inspection	Multiple testing methods applied before delivery:
	IPQC: In-process inspection, first-article LCR test
	Visual QC: Routine quality check
	SPI: Solder paste inspection
	AOI: Solder joint quality, missing/polarity check
	X-Ray: BGA/QFN hidden pad inspection
	Functional Test: Client-specified procedures
Rework & Repair	Post-sale rework available with engineer support	Our BGA rework service safely removes/replaces misaligned or poorly soldered BGAs

Our PCB assembly solutions are delivered in as fast as 24 hours.

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PCB Assembly Solutions

SLLPCB specializes in providing one-stop services from PCB design to prototype manufacturing, with a strong focus on meeting customer needs for PCB prototyping and low-volume production.

We are equipped with advanced multilayer board fabrication technologies, capable of producing complex PCBs with up to 68 layers. This includes special process boards such as impedance-controlled PCBs and buried/blind via boards.

Before production begins, our engineering team offers free DFM (Design for Manufacturability) checks and expert design guidance. Through in-depth technical analysis and prompt feedback, we proactively identify and resolve any potential non-quality issues, ensuring a smooth transition into manufacturing.

We are committed to delivering technically advanced and cost-optimized PCB solutions, making us an ideal partner for R&D prototyping and small-batch production. Whether you require simple single-layer boards or highly complex multilayer PCBs, we provide reliable manufacturing services and professional technical support.

Comprehensive Component Sourcing Services to Enhance PCB Assembly

We offer end-to-end component sourcing services, covering a wide range of components to support and improve our PCB assembly offerings. This includes active components such as ICs, memory chips, diodes, and transistors; passive components like capacitors and resistors; and electromechanical parts such as connectors and switches.

With years of experience in circuit assembly, we have established strong partnerships with leading authorized distributors, including Digi-Key, Mouser Electronics, Arrow Electronics, and Avnet. These relationships enable us to source virtually any component at competitive prices.

Our areas of expertise span a broad range of industries, including:Industrial automation and control、Security systems、LED lighting、Medical devices、Automotive electronics、Instrumentation、Consumer electronics、Power management、Communication networks and base stations、Computer hardware、Smart home solutions、Sensors and measurement instruments、Rail transit systems (subway and high-speed rail)、Automation solutions.

We are fully equipped to meet a wide variety of sourcing needs, including spot purchases, accurate BOM matching, cost optimization, and low-volume component procurement.

Strict incoming inspection ensures component quality and manufacturing reliability.

To ensure consistency, reliability, and interoperability in the design, manufacturing, testing, and application of electronic components, we have implemented a rigorous incoming inspection process before production begins.

Ensuring the quality of raw materials is a critical first step in our industrial process, playing a key role in guaranteeing product quality. Identifying non-conforming materials enhances operational performance and saves valuable time. By conducting comprehensive inspections on all incoming components, we can detect and eliminate any defective or substandard materials, thereby reducing the risk of flaws, improving overall operational efficiency, and conserving valuable time and resources in later production stages.

Full-Cycle Turnkey PCB Assembly Solutions

From design validation to finished product delivery, we provide end-to-end electronics manufacturing services. As a professional OEM/ODM partner, SLLPCB leverages smart manufacturing hubs to deliver customized solutions for clients of all scales. Whether you require full-system integration (full turnkey) or partial collaboration, our Yamaha high-speed placement lines, reflow/wave soldering systems, and modular production units ensure seamless transitions from prototypes to mass production.

Six-Layer Quality Control System

We build a quality moat with military-grade standards: leveraging SMT precision mounting, dual-process soldering, and 3D inspections (AOI/X-RAY/ICT) to create a closed-loop quality control chain. A certified professional team monitors 12 critical process nodes in real time, supported by over 20 sets of testing equipment including flying probe testers and functional aging chambers, ensuring a product yield rate of over 99%. Every batch is accompanied by an IPC-A-610G standard inspection report, truly delivering zero-defect products.

03 On-Time Delivery Commitment

By establishing an intelligent production scheduling system and a global logistics network, we make the following commitment: sample requests will receive a rapid response within 1 hours, and on-time delivery rate of 99%. With real-time progress tracking via ERP and dedicated project manager follow-up, we ensure full visibility from material readiness to finished goods dispatch. We support VMI warehousing collaboration and multi-port customs clearance services, enabling door-to-door delivery within 72 hours in major global regions—providing certainty and reliability for your project timelines.

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A5 printer

JUKI RS-1R

SMT Line