PCB Assembly service
988 Assembly offers full Turn-Key and partial Turn-Key PCB Assembly Services. For full Turn-Key, we handle everything including making PCBs, sourcing components, online order tracking, quality inspection and final assembly. For partial Turn-Key, you can order the PCBs or/and partial components, 988 will fix the remaining parts for you.
How to get a quotation for Turn-Key PCB assembly Services?
Send your BOM files (Bill of Materials) and Gerber files to sales@988pcba.com, we will email you the quotation in 48 hours. BOM must include the quantities, reference designators,and manufacturer name and manufacturer part number. Gerbers must include the PCB requirements.
Our Assembly Capabilities:
Testing Procedures
Various testing method will be applied to the assembled boards before the final shipment:
Visual inspection: general quality check
X-ray Inspection: checks for BGAs, QFN and bare PCBs.
AOI Testing: checks for solder paste, 0201 components, missing components and polarity.
ICT (In-Circuit Test)
Functional test (Following your test procedures)ISO Certification
988's production facilities are ISO9001 certified to ensure we go beyond your expectations.
Small batch PCB assembly
Low volume PCB Assembly means a small quantity of PCB assemblies for DFM and DFT. 988 offers turn-key PCB assembly service in low volume including PCB fabrication, parts sourcing and final assembly.Design-for-Manufacturing (DFM) should be considered in low volume board assembly. We will review your documentation for any possible like engineering concerns in your Gerber files, BOMs, assembly drawings and circuit diagrams. As a turn-key solution provider, 988 will handle to control your PCBs to lower cost and facilitate the assembly process. We will recommend a solder mask opening to get a high yield rate while preventing solder bridging. We will also check your BOM files against your PCB files and seek confirmation from you before we order parts carefully. It avoids wasting your money and delaying delivery time.Similarly, Design-for-Testing (DFT) should be happened in your circuit design project, even for low volume assembly. Various models, fixture styles and tester limitation notes are available to support you. You will get our professional guidelines on how to distribute the test points on the PCBs after checking your test procedure. We always do as your test requirements by following your troubleshooting guidelines, diagnostic tests, and associated documentation to make your boards fully tested.We have various ways to get your low volume assembly project without risk. In our turn-key service, all the PCBs must have the electrically test. Some assembled PCBs could be sent to you for testing before producing the rest. X-ray inspection is available to check BGA and leadless part for ensuring assembly quality. We could solve any possible assembly issues before shipment.We take reducing cost seriously for low volume orders. NRE and stencil charges will be waived for repeat orders. We reduce your per-part cost by shopping each part number with the major distributors and choosing quantities to get the lowest per-part price. We have built close relationships with major suppliers and others to keep parts sourcing cost competitive without sacrificing quality. We ensure that you will get the best combination of PCB turn-key service quality, price and delivery time.How to get an exact quotation before placing your order:
To get a low volume PCB assembly quote, send the following to: sales@988pcba.com.BOM files with detailed info. better to provide the part number for each componentGerber files with PCB requirementsQuantities to buildPrototype PCB assembly
Prototype PCB Assembly is our specialty. With our professional soldering teams, SMT process engineers and parts procurement specialists, we are able to provide an affordable highly flexible assembly process with fast delivery.We are able to handle prototype assembly quantities from 1 to 300 boards. With this services, you could get complex designs built for testing without worrying about assembly workmanship. Our prototype assembly area has a unique layout design that allows flexible mixing of automated and manual part loading stations. It is easy for us to handle the fine pitch components and BGAs needed for high density FR-4 boards.Turn-Key PCB assembly is our core business, even in the prototype stage. With our expertise and resources we are able to do everything for you from PCB prototyping, component sourcing and PCB assembly. We could also assemble from kitted parts if you prefer.Avoid the dilemma of sourcing parts and focus on your design instead. Our procurement teams will deal with as many as component distributorsis so that we could get a nice price for you ! We will optimize the choices of packaging (cut tape, tube, bulk, etc.) versus quantity in smaller BOMs to reduce amount cost. We are able to cross reference parts including the uncommon ones and obsolete items. We always source the part numbers and manufacturers specified in your BOM files, so there will be no danger of part quality issues caused by substitutions. We never change your design without your confirmation.The total Turn-Key price will be the sum of the labour assembly cost, bare PCB cost and components cost.The component prices will be our cost from Digi-Key, Mouser, Avnet, Arrow, Future, Newark or a specified distributor plus a handling fee.We understand on-time delivery is very important. PCB fabrication is started as soon as parts procurement is processed. We will review Engineering questions and component issues with you before the assembly job is started. The Turn-Key PCB assembly usually takes 2-4 weeks, and it will be less time if there is no uncommon part or documentation errors.How to get an exact quote before placing your order:
To get a prototype assembly quote, just send the following files to sales@988pcba.com.BOM files with detailed info. better to provide a part number for each oneGerber files with PCB requirementsQuantities to buildBGA Assembly
BGA (Ball Grid Array) Assembly Services with X-ray Inspection
988 is able to provide BGA assembly, BGA rework and BGA Reballing services and have a 6-year experience. With the advanced BGA placement equipment, standard BGA assembly processes and X-ray test equipment, you could get high quality BGA boards from us.BGA Assembly Capability
988 has rich experience in handling all types of BGAs from micro BGAs (ball pitch 0.3mm) to large size BGAs (ball pitch 0.8mm), and from ceramic BGAs to plastic BGAs.BGA Assembly Process/Thermal profilesThermal profile is the most importance one in the BGA assembly process. Our SMT engineers will carefully review your PCB files and the BGAs datasheets to make a best thermal profile for your BGA assembly. We will take the BGA size, BGA ball material composition (leaded or lead-free) into consideration to make effective thermal profiles. When the BGA physical size is large, we will optimize the thermal profile to localize the heating on the internal BGA. Or it will cause a void. 988 follows the IPC Class II to control the void under 25% of total solder ball diameter. Lead-free BGA will go through a specialized lead-free thermal profile to avoid open ball problems resulting from the lower temperature. On the other hand, leaded BGA will take a specialized leaded process, to avoid the higher temperatures from causing pin-short.When we receive your Turn-Key order, we will check your PCB design for BGA combined with DFM (Design for manufacturability) review, including checking the circuit board material, surface finish, maximum warpage requirement and solder mask clearance.BGA soldering, BGA Rework & Reballing
You may have only a few BGAs or fine pitch parts on the PCBs for R&D prototypes. 988 could help -- we are able to provide a BGA soldering service for testing and evaluation purposes. Additionally, we can support you for BGA rework and BGA reballing with a nice price. We follow five basic steps to carry out BGA rework:1. Components removal2. Site preparation3. Solder paste application4. BGA replacement5. Reflow processYou will get a 100% quality assurance for the BGA rework.BGA Assembly X-Ray Inspection
988 will use an X-Ray machine to detect various defects which might happen during the BGA assembly. With the help of X-ray inspection, we could eliminate soldering problems on the board.send your requirement to: sales@988pcba.comPCB FAQ
PCB FAQ
PCBA Instructions for commissioned processing services
Contract Manufacturing Service
Customers are to dispatch printed circuit boards (PCBs) and components to us. We will assemble the entire order by leveraging state - of - the - art automated PCB assembly equipment.
Provision of Component Classification
It is advisable that customers supply additional components when releasing materials, as consumption may occur during the PCB assembly process. Although we anticipate minimal losses, for the sake of prudence, we highly value the availability of a small quantity of spare parts to preclude any potential delays.
Passive Components
For components sized 0603 and larger: Incorporate a 20% damageallowance along with an extra 20 pieces.
For components sized 0402 and 0201: Incorporate a 100% damageallowance along with an extra 100 pieces. A continuous tape is requisite.
For all other material types: Incorporate a 20% damageallowance.
Integrated Circuits
For those with a unit price below USD 1.00: Provide a 20%damage allowance.
For those with a unit price ranging from USD 1.00 to USD 5.00:Provide 1 spare piece.
For those with a unit price above USD 5.00: No damage allowanceis necessary.
Components with anti - static protection and moisture - sensitive device packaging will be handled with utmost care during inventory and storage procedures. Any unutilized components will be returned to the customer.
In most instances, upon receipt of the consigned kit materials, a rigorous incoming material inspection will be executed. The inspection report will typically be furnished within 24 hours of material receipt. However, on occasion, due to pressing production exigencies, issues may only be detected during the assembly process, following which feedback will be provided to the customer.
Bare PCBs
It is recommended that PCBs be equipped with a silkscreen layer denoting polarity and the first - pin position.
Special Handling Requirements
In the event that the kit is incompatible with detergents or has other special handling prerequisites, customers are required to submit special handling instructions or an operation manual.
Parts Procurement Policy
Full Turn - Key Orders: 988 willperform procurement activities in accordance with the Bill of Materials(BOM) furnished by the customer. All substitution requests are subject tocustomer approval.
Partial Turn - Key Orders: 988 willperform procurement activities based on the BOM provided by the customerand/or the components listed in the consigned procurement list. Allsubstitution requests are subject to customer approval.
One-stop service provider of electronic components, tools, PCBA | Email: sales@988pcba.com Tel: 0755-83151988 Fax : +86-0755-83114709 Add : F3, B4, Lao Xu Cun Building, 13th Pingji Road, Shanglilang community, Nanwan subdistrict,Longgang district, Shenzhen, Guangdong, PRC. | 
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