DQS Electronic Co., Limited

♦ Years of Manufacturing PCBs DQS Electronic CO., LTD  is a leading provider of cutting-edge 1-64 layer printed circuit board manufacturing technologies, delivering the highest quality standards for the electronics industry.  Our PCB expert engineering team specialize in overcoming complex design products, including: High Speed and High Frequency PCB RF and Microwave technology Thermal Management solutions Miniaturization techniques Chip package substrates We have over 10 years of experience in serving many domestic and foreign brand customers in a wide range of fields such as Medical, Automotive, Industrial Automation, Artificial Intelligence, Smart Home, Security, Power and Communications, etc.. Types of PCBs we offer including: HDI PCB ( Blind with Buried Vias) Up to 64 multilayer PCB Rigid-flex PCB RF PCB Aluminium PCB Heavy Copper PCB Flexible PCB PCB Prototype Felx PCB  Rigid-Flex PCB Ceramic PCB Heavy Copper PCB HDI PCB High Frequency PCB  High TG PCB DQS Team welcomes complex RFQs for cost estimation. We can meet your advanced PCB manufacturing needs with precision, quality, and innovation.  Please send your Gerber file to our offical email: Marketing@dqspcba.com, we will get back you very soon! ♦ Technical Parameters Item Spec Layers 1~64 Board Thickness 0.1mm-10 mm Material FR-4, CEM-1/CEM-3, PI, High Tg, Rogers, PTEF, Alu/Cu Base,Ceramic, etc Max Panel Size 800mm×1200mm Min Hole Size 0.075mm Min Line Width/Space Standard: 3mil(0.075mm)  Advance: 2mil Board Outline Tolerance 士0.10mm Insulation Layer Thickness 0.075mm--5.00mm Out Layer Copper Thickness 18um--350um Drilling Hole (Mechanical) 17um--175um Finish Hole (Mechanical) 17um--175um Diameter Tolerance (Mechanical) 0.05mm Registration (Mechanical) 0.075mm Aspect Ratio 17:01 Solder Mask Type LPI SMT Min. Solder Mask Width 0.075mm Min. Solder Mask Clearance 0.05mm Plug Hole Diameter 0.25mm--0.60mm Impedance Control Tolerance 士10% Surface finish ENIG, Immersion Gold, OSP, HASL, Chem. Tin/Sn, Flash Gold, etc Solder mask Green/Yellow/Black/White/Red/Blue Silkscreen Red/Yellow/Black/White Certificate UL, ISO 9001, ISO14001, ISO13485, IATF16949  Special Request Blind hole, Gold finger, BGA, Carbon ink, peelable mask, VIP process, Edge plating, Half holes, etc Material Suppliers Shengyi, ITEQ, Taiyo, etc. Common Package Vacuum+Carton

♦ What is SMT Assembly?  SMT Assembly (Surface Mount Technology Assembly)​​ is a modern method of assembling electronic circuits where components are mounted directly onto the surface of a printed circuit board (PCB) rather than through holes, as in traditional through-hole technology (THT). ♦ Features of SMT Assembly ​​Surface-Mounted Components (SMDs)​​ – Small, flat components (resistors, capacitors, ICs) with no leads or short leads. ​​Automated Process​​ – Uses pick-and-place machines for high-speed, precise component placement. ​​Reflow Soldering​​ – Components are soldered using a reflow oven, where solder paste melts and forms connections. ​​High-Density PCBs​​ – Allows for smaller, lighter, and more compact circuit designs. ​​Faster & Cost-Effective​​ – More efficient than through-hole assembly for mass production. ♦ SMT Assembly Process Steps ​​Solder Paste Application​​ – A stencil deposits solder paste on PCB pads. ​​Component Placement​​ – A pick-and-place machine positions SMDs on the PCB. ​​Reflow Soldering​​ – The PCB passes through an oven, melting the solder paste to form connections. ​​Inspection & Testing​​ – Automated optical inspection (AOI) and functional testing ensure quality. ♦ Advantages of SMT Assembly ✔ Smaller, lighter PCBs✔ Higher component density✔ Faster production & lower costs✔ Better performance for high-frequency circuits ♦ Core Competencies of DQS PCB Assembly SMT DIP 13 automatic high-speed SMT line  5 million points / day FPC/Double sided mounted Automatic conformal coating 4 DIP line Post-soldering700,000 points/day Professional DIP plug-in team SMT Technology PCBA OEM Min package: 01005   Min pin: 0.3mm Min BGA pitch: 0.3 mm   Full turnkey PCB assembly Partial turnkey PCB assembly ♦ Technical Parameters Item Spec Layers 1~64 Board Thickness 0.1mm-10 mm Material FR-4, CEM-1/CEM-3, PI, High Tg, Rogers, PTEF, Alu/Cu Base,Ceramic, etc Max Panel Size 800mm×1200mm Min Hole Size 0.075mm Min Line Width/Space Standard: 3mil(0.075mm)  Advance: 2mil Board Outline Tolerance 士0.10mm Insulation Layer Thickness 0.075mm--5.00mm Out Layer Copper Thickness 18um--350um Drilling Hole (Mechanical) 17um--175um Finish Hole (Mechanical) 17um--175um Diameter Tolerance (Mechanical) 0.05mm Registration (Mechanical) 0.075mm Aspect Ratio 17:01 Solder Mask Type LPI SMT Min. Solder Mask Width 0.075mm Min. Solder Mask Clearance 0.05mm Plug Hole Diameter 0.25mm--0.60mm Impedance Control Tolerance 士10% Surface finish ENIG, Immersion Gold, OSP, HASL, Chem. Tin/Sn, Flash Gold, etc Solder mask Green/Yellow/Black/White/Red/Blue Silkscreen Red/Yellow/Black/White Certificate UL, ISO 9001, ISO14001, ISO13485, IATF16949  Special Request Blind hole, Gold finger, BGA, Carbon ink, peelable mask, VIP process, Edge plating, Half holes, etc Material Suppliers Shengyi, ITEQ, Taiyo, etc. Common Package Vacuum+Carton ♦ Advantages of DQS Team         1.On-time Delivery:   Owned PCBA factories 15,000 ㎡ 13 fully automatic SMT lines  4 DIP assembly lines      2. Quality Guaranteed: IATF, ISO, IPC, UL standards  Online SPI, AOI, X-Ray Inspection  The qualified rate of products reach 99.9%      3. Premium Service: 24H reply your inquiry； Perfect after-sales service system From prototype to mass production

♦ How to ensure that the electronic components purchased are from genuine channels?  We have a perfect supply chain management system, we strictly audit and certify all suppliers and accept small batch samples and specifications to ensure the qualification of our suppliers. In addition, we are equipped with a strong IQC incoming inspection mechanism, standard AQL sampling inspection for all major components, and professional inspection labs and equipment. ♦ What are the advantages of our sourcing of electronic components?  Reliable Purchasing Channels DQS Electronics Co., Ltd. cooperates with many domestic and foreign electronic component manufacturers and authorised brand agents, which fully meets the customer's needs for purchasing scarce materials, small and large batches, and application samples. Professional Quality Department Inspection Our professional purchasing team conducts strict screening and classification of suppliers, and only selects distributors, channelers and agents with good reputation and recognised by customers for cooperation. Most of the suppliers are authorised agents of original brands to ensure the quality of electronic components. We will also order products from designated suppliers in strict accordance with customer requirements and retain most of the original packaging and labelling. We can provide transaction documents related to the suppliers on the spot if customers need.We will set up specialised IQC to confirm and check the quality of purchased raw materials, components or products, i.e. when suppliers send raw materials or components, we will inspect the products by sampling and full inspection, and finally decide whether the batch of products should be accepted or returned. We are also equipped with professional electronic components testing equipment, in strict accordance with the relevant technical documents standards and material operating instructions for acceptance, to ensure the quality of materials entering the production line. Warehouse Management Both the electronic components provided by customers and those purchased by us are stored in clean, ventilated warehouses without corrosive gases. Warehouse temperature is kept at 23~26°C and relative humidity is controlled at 45%~75%. For PCBs, IC chips, etc., we use vacuum packaging to avoid oxidation of copper foil and contacts directly exposed to the air. For electronic components with anti-static requirements (e.g. MOS FETs, GaAs FETs, CMOS circuits, IC chips, BGAs, etc.), we use anti-static bags, anti-static drying boxes, anti-static crates, etc. for storage. Special needs materials, such as: solder paste, solder paste, adhesives, etc., will be stored according to the storage requirements. The warehouse has a strict material control system and ERP system, following the principle of first-in-first-out to prevent materials from expiring. Advantages of Choosing DQS ELECTRONIC  Years of experience: the professional procurement team has more than 6 years of experience in domestic electronic components procurement, and has served hundreds of industry customers across the country; Multi-channel: not only cooperate with domestic and foreign distributors with high reputation and real inventory, but also cooperate with online platforms, offline original factories or agents; Technical support: our professional electronic engineers will select more alternative products or other brands according to the specifications provided by the customer, optimise the availability of procurement, discover new applicable materials and discontinued materials in time, reduce the customer's procurement risk and shorten the product delivery period; Cost reduction: flexible procurement can be made according to the order quantity specified by the customer: the optimal price is obtained by comparing the price range positioning and packaging volume. In addition, we will centralise the procurement of all the electronic components required by our customers in one single purchase, thus achieving savings in time, operation and platform costs. Additional Comparison: It can provide information about all available suppliers for comparison and purchase, including price, delivery date, stock and so on. ♦  200+ Component Suppliers  With long-term cooperation with 200+ suppliers, DQS ELECTRONIC can provide global multi-channel component bulk purchasing, real cost-effective, real genuine quality assurance, and reduce cost and increase efficiency for you. Co-operate with global famous component suppliers and official channel suppliers to maintain the availability of all electronic materials, and establish strict inspection and testing system to effectively control the processing quality, loss and other risks to reduce the loss of your business.