Deploying high-reliability, multi-layer printed circuit board assemblies designed to operate flawlessly under heavy workloads and variable environmental conditions.
Sri Lanka is undergoing rapid industrial growth, fueled by investments in infrastructure projects such as the Colombo Port City, the expansion of telecommunications (Dialog Axiata, SLT-Mobitel 5G deployment), and automated processing inside the agricultural sector (specifically tea processing and rubber industries). Industrial enterprises in Hambantota and Colombo are modernizing their manufacturing facilities, moving away from legacy mechanical systems to IoT-enabled and automated electronics.
This evolution requires ruggedized, high-performance printed circuit board assemblies (PCBAs). Operating electronics in South Asia presents distinct challenges: high relative humidity (averaging 70-90% RH), coastal atmospheric salinity, and occasional power fluctuations. To withstand these environments, PCBAs must feature strict conformal coating application (acrylic, silicone, or polyurethane), advanced thermal dissipation paths, and high-tolerance power regulation components.
Globally, the electronic manufacturing services (EMS) sector is shifting toward extreme miniaturization, high-density interconnect (HDI) technologies, and sustainable manufacturing practices compliant with RoHS and REACH regulations. Lead-free wave soldering, halogen-free PCB laminates, and automated component level traceability are now standard industry requirements.
Additionally, supply chain security has become paramount. Leading contract manufacturers are integrating robust supply chain management tools to prevent counterfeit components and guarantee sourcing from authorized distributors (Arrow, Avnet, Future Electronics, DigiKey). By utilizing IATF 16949 standards (Automotive quality) and ISO 13485 standards (Medical quality), tier-one manufacturing partners guarantee maximum reliability for mission-critical assemblies.
High-efficiency assemblies tailored for clean energy production, consumer appliances, medical diagnostics, and automotive systems.
Shenzhen STHL is a high-quality provider of electronics manufacturing services (EMS) in China, we serve customers worldwide along the whole industry chain including PCB layout, components sourcing, PCB fabrication, PCBA assembly, cable assembly, box build assembly and comprehensive testing services.
It was established in 2006, with 20 years of experience in electronics contract assembly manufacturing. Currently, STHL has 220+ staff members. Our 10,000 sqm facilities include 7 SMT assembly lines, 2 DIP/THT lines, 2 function testing lines and 2 finished device assembly lines.
At STHL, we provide electronics assembly services for energy power, communications, automotive, medical, consumer electronics, computers & storage, safety & security, commercial and industrial products. Our customers mainly from USA, Germany, Italy, UK, Poland, New Zealand, Argentina, Brazil, Turkey, Korea, Thailand, and the other 90 regions of the world.
As an IATF16949, ISO9001, ISO14001,and ISO13485 certificated electronics assembly manufacturer, we produce products exactly comply with RoHS standard and quality guarantee. Based on our excellent engineering and production capacities in technical areas such as materials analysis & storage, advanced equipment, reliability testing (AOI, X-RAY, ICT test and function test), high effective SMT and THT assembly, we are recognized as a long-term reliable PCBA vendor by more and more customers wordlwide.
Welcome to visit STHL factory at any time.
We can handle a wide range of advanced components, including:
Ball Grid Array (BGA) and Ultra-Fine BGA (uBGA): We have the expertise to handle these complex components with precision, ensuring reliable connections.
QFN, QFP, SOIC, and PLCC Packages: Our advanced equipment tackles various surface-mount package types efficiently.
Package-on-Package (PoP) and Small Chip Packages: We're equipped to handle even the most intricate components with tight pitch spacing.
But our commitment to quality goes beyond component expertise. We utilize advanced inspection techniques, including AOI and X-Ray inspection, to guarantee flawless assembly.
STHL PCBA also excels in Through-Hole Technology (THT) assembly. Our services encompass:
Manual and Automatic Component Insertion: We leverage both manual dexterity and automation for high-quality component placement.
THT Assembly Fixtures: Our custom fixtures ensure consistent and efficient assembly of through-hole components.
ESD and RoHS Compliant Soldering: We prioritize electrostatic discharge protection and adhere to RoHS compliance, guaranteeing the safety and environmental responsibility of our processes.
Inspection and Functional Testing: Just like SMT assemblies, THT boards undergo rigorous inspection and functional testing before shipment.
Providing end-to-end EMS solutions from initial PCB fabrication through complete functional testing and final product box builds.
STHL operates 7 automated PCB assembly lines for both prototype and mass production. Advanced SMT ensures precise component placement and quality. Skilled technicians provide efficient THT assembly and RoHS-compliant lead-free soldering.
STHL PCB fabrication service produces high-quality, reliable printed circuit boards from simple singles to complex multi-layers, from flex PCB to rigid-flex PCB, we use premium materials and controlled processes to meet precise specifications.
STHL offers global electronic component sourcing and supply chain solutions. Our vast supplier network and expertise ensure access to genuine, certified parts, mitigating risks of counterfeits, allocation, and long lead times to secure your production schedule.
With the precision manufacturing of cable assembly components including handles, retention systems, connectors, and shielding in a wide range of materials and finishes, we have performed many successful cable assemblies for many customers from various industrial applications.
Making your projects at STHL from SMT assembly to box build assembly is very cost-effective and fast to market. Covering everything from putting a PCBA into the enclosure with all functions testing to a complete product assembly packaged and ready for delivery to your customers, we can supply the full support.
STHL conducts functional testing (FCT) to verify product performance, preventing defects such as circuit issues, missing or incorrect components. This ensures delivered products are stable and fully qualified.
In humid and coastal tropical areas like Colombo, Galle, and Trincomalee, PCBs face high risk of premature failure due to salt-mist corrosion and moisture absorption, which leads to electrochemical migration (dendrite growth) and short circuits. To prevent this, STHL implements systematic environmental ruggedization:
To align with global demands for miniaturization and edge computing, STHL's engineering research team is continuously developing next-generation PCB assembly technologies:
1. HDI PCB Technology: Supporting blind and buried microvias to allow dense routing required by advanced 5G hardware and miniaturized IoT devices.
2. Embedded Components: Embedding resistors and capacitors inside the PCB layers to minimize footprint and decrease parasitic inductance, essential for high-frequency radio applications.
3. AI-Assisted Optical Inspections: Integrating deep-learning models into our AOI systems to optimize real-time defect classification, reducing cycle times while achieving zero-defect escape rates.
Browse our diverse product catalog including telecommunication infrastructure, lighting, aerospace, and high-frequency power solutions.
Find key technical information regarding our shipping, environmental customization, testing, and component sourcing methods.
We offer direct and expedited door-to-door delivery channels from Shenzhen to Colombo and Hambantota industrial zones, working closely with DHL, FedEx, and reliable maritime freight forwarders. This ensures customs clearance transitions smoothly, maintaining short delivery cycles for bulk production and quick-turn prototyping.
Yes. To guarantee operations in tropical climates with high relative humidity and salt air, we provide automated selective conformal coating services using high-quality acrylic, polyurethane, or silicone compounds based on your design and thermal requirements.
STHL is a fully certified facility holding ISO 9001 (Quality Management System), ISO 14001 (Environmental Management System), ISO 13485 (Medical Device Manufacturing Quality), and IATF 16949 (Automotive Quality Management). Our manufacturing and inspection workflows strictly adhere to IPC-A-610 Class II and Class III standards.
We purchase directly from original chip manufacturers or certified global distributors (DigiKey, Mouser, Avnet). We execute a rigorous incoming quality control (IQC) inspection plan, which includes batch code verification, visual inspections, and component validation to guarantee that zero counterfeit components enter the SMT production line.
Our comprehensive reliability testing program includes Solder Paste Inspection (SPI), Automated Optical Inspection (AOI), X-Ray inspection for BGA packages, In-Circuit Testing (ICT), and full custom Functional Testing (FCT). Additionally, we can perform environmental chamber testing to verify long-term performance under hot and humid operating profiles.
Get access to professional SMT/THT PCB assembly, quick-turn prototyping, and robust supply chain procurement services optimized for the Sri Lankan market.
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STHL PCBA
