Your Expert Large PCB Manufacturer in China

PCBMay has over 15 years of experience in producing a high-end Large PCB and other types of PCB nationwide. We are glad to provide your requirements to complete your production. PCBMay is the leading and top manufacturer and supplier of Large PCB in China.

  • Rich industry experience, trustworthy
  • Competitive price and highest quality
  • Manufacture with solid quality materials
  • Powerful process capability
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Large PCB is Your Best Choice for Your Project

PCBMay provides equipment with stable performance. You can find a wide selection of Large PCBs that can complete your PCB production line. PCBMay is a high-reliable and the most recommended Large PCB manufacturer in China. We are an ISO-certified manufacturer that can produce a Large PCB that truly meets international standards. We only choose high-quality materials to ensure the best quality of every production.

Send your inquiry Now!

Types of Large PCB Meet Your Requirements

Mother Board PCB Circuit Board

Expert circuit board testing, high-quality Mother Board PCB Circuit Board wholesale price. Get yours now with our unique and best-quality PCB, a high-quality product service.

Home Electronic Dishwasher PCB Large

The Home electronic dishwasher PCB large capacity portable dishwasher PCB board. Water consumption, Dish cleaning, 6 layer Fruit and vegetable cleaning: low water level 4L, medium water level 6L, high water level 8L.

Large-Sized PCB Assembly

A Large-Sized PCB Assembly is a flexible equipment configuration, designed for manufacturing a wide range of products, safety devices, home and office securities.

Custom Good Quality PCB Assembly

We manufacture professional custom Good Quality PCB Assembly manufacturing board PCB. PCBMay offers a flexible, one-stop solution for your PCB project.

Two Sided PCB Mother Board Scale

For single-sided and Double-layer PCB, the minimum trace width is 5mil, For multi-layer PCB, The minimum trace width is 3.5mil.

Large Current Multi Series PCB

Large Current Multi Series PCB can extend battery life and make the battery work safely. Can protect battery packs from over-charge, over-discharge, over-current, short-circuit, over-temperature, etc.

Why Choose PCBMay for Your Large PCB

PCBMay is a well-known manufacturer of different PCB types. If you choose us as your permanent manufacturer, you made the right decision. We offer a high-quality solution for Large PCB needs. PCBMay is an excellent source for any PCB equipment.

Furthermore, We manufacture Large PCBs that can meet your standards. So if you are looking for a durable and original Large PCB, you must choose PCBMay services as your supplier. PCBMay is the manufacturer that owns the full capability to provide your needs on time and is suitable for your budget.

Contact us for more information about Large PCB!

VPC Plating Line

Related Large PCB Boards

PCB Assembly of Robot Vacuum Cleaner Exported
PCB Assembly of Robot Vacuum Cleaner Exported
PCBMay is a professional PCB Assembly of Robot Vacuum Cleaner Exported manufacturer. Get the best and high-quality types of PCB at PCBMay services.
Grade Quality Customized Size PCB
Grade Quality Customized Size PCB
The LED PCB is the core of LED lighting, and Now the packaging type is the most widely used packaging form in LED applications.
Large Quantity PCB Circuit Boards
Large Quantity PCB Circuit Boards
Professional quick turn fast urgent sample large quantity PCB circuit boards, Excellent quality, and professional service,
PCB Assembly Medical Device
PCB Assembly Medical Device
Complete product assembly (including plastic, metal casing, PCB motherboard, cables, switches, other components, etc. ROHS environmentally protection material supply.
Large-scale PCB Stamp Hole FR-4 PCB
Large Scale PCB Stamp Hole FR-4 PCB
PCBMay Large-scale PCB manufacturer Stamp hole FR-4 PCB Set production higher technology. Our types of PCB importing and exporting goods from China.
PCB 94v0 PCB FR4 Large
PCB 94v0 PCB FR4 Large
The PCB 94v0 PCB FR4 in Large is a unique PCB that can give full of high-quality when used. The lead-time depends on your final confirmed quantity.
Large Scale Size PCB Long Circuit Board
Large Scale Size PCB Long Circuit Board
We provide unique feature allows us to build up to 24 PCB with almost any PCB material type. Produce in a wide range of large PCB products every week.
Multilayer Hard Electronic Board Standard PCB
Multilayer Hard Electronic Board Standard PCB
We supply Multilayer Hard Electronic Board Standard PCB chain management ensures good quality of raw materials.

Large PCB Production Details As Following Up

Brown Oxide
PTH Line
VCP Plating   AOI  Exposure E-Test
Layer Count1-40layers
Base MaterialKBShengyiShengyiSF305FR408FR408HRIS410FR406GETEK370HRIT180ARogers4350BRogers4000PTFE Laminates(Rogers seriesTaconic seriesArlon seriesNelco series)Rogers/Taconic/Arlon/Nelco laminate with FR-4 material(including partial Ro4350B hybrid laminating with FR-4)
Board TypeBackplane、HDI、High multi-layer 、blind&buried PCB、Embedded Capacitance、Embedded resistance board 、Heavy copper power PCB、Backdrill.
Board Thickness0.2-5.0mm
Copper ThicknessMin. 1/2 OZ, Max. 10 OZ
PTH Wall25um(1mil)
Maximum Board Size1100*500mm(43”*19”)
Min laser drilling size4mil
Min. Spacing/Tracing2.7mil/2.7mil
Solder MaskGreen, Black, Blue, Red, White, Yellow,Purple matte/glossy
Surface TreatmentFlash gold(electroplated gold)ENIGHard goldFlash goldHASL Lead freeOSPENEPIGSoft goldImmersion silverImmersion TinENIG+OSP,ENIG+Gold finger,Flash gold(electroplated gold)+Gold finger,Immersion silver+Gold finger,Immersion Tin+Gold finger.
Min. Annular Ring3mil
Aspect ratio10:1(HASL Lead freeHASL LeadENIGImmersion TinImmersion silverENEPIG);8:1(OSP)
Impedance control±5ohm(<50ohm), ±10%(≥50ohm)
Other TechniquesBlind/Buried Via
Gold Fingers
Press Fit
Via in Pad
Electrical Test

Here there’re many laminate material datasheets, they’re useful and helpful for you, please see them:

TU-872Modified EpoxyDOWNLOAD2003403.8-4.03.8
RO 3010Cer/PTFEDOWNLOAD50010.2
RO 4003Hydrocarbon/CerDOWNLOAD>2804253.38
RO 4350BHydrocarbon/CerDOWNLOAD>2803903.48
RT/duroid 5880PTFE/GlassDOWNLOAD5002.2
ISOLAPolyclad 370HRFR4DOWNLOAD1703404.8-5.1
HitachiMCL-BE- 67GModified EpoxyDOWNLOAD1403404.94.4
MCL-LX-67YSpecial LaminateDOWNLOAD185-195325-3453.4-3.6
NelcoN4000-13Modified EpoxyDOWNLOAD210-2403653.73.6
N4000-13EPModified EpoxyDOWNLOAD210-2403503.43.2
N4000-13SIModified EpoxyDOWNLOAD210-2403503.43.2
N4000-13EP SIModified EpoxyDOWNLOAD210-2403503.43.2
ArlonArlon 25NCerDOWNLOAD2603.38
Arlon 25FRCerDOWNLOAD2603.58
Arlon 33NPolymideDOWNLOAD>2503534
Arlon 35NPolymideDOWNLOAD>2503634.2
Arlon 85NPolymideDOWNLOAD2503874.2
StablcorST325DOWNLOADThermal conductivity:75w/m.k(with 1oz copper)
ST10DOWNLOADThermal conductivity:325w/m.k(with 1oz copper)
Bergquistht-04503DOWNLOADThermal conductivity:2.2w/m.k(with 1oz copper)


PCBMay offers flexible shipping methods for our customers, you may choose from one of the methods below.

1. DHL

DHL offers international express services in over 220 countries.
DHL partners with PCBMay and offers very competitive rates to customers of PCBMay.
It normally takes 3-7 business days for the package to be delivered around the world.

DHL Forwarder

2. UPS

UPS gets the facts and figures about the world’s largest package delivery company and one of the leading global providers of specialized transportation and logistics services.
It normally takes 3-7 business days to deliver a package to most of the addresses in the world.

UPS Forwarder

3. TNT

TNT has 56,000 employees in 61 countries.
It takes 4-9 business days to deliver the packages to the hands
of our customers.

TNT Forwarder

4. FedEx

FedEx offers delivery solutions for customers around the world.
It takes 4-7 business days to deliver the packages to the hands
of our customers.

Fedex Forwarder

5. Air, Sea/Air, and Sea

If your order is of large volume with PCBMay, you can also choose
to ship via air, sea/air combined, and sea when necessary.
Please contact your sales representative for shipping solutions.

Note: if you need others, please contact your sales representative for shipping solutions.

On our website you can use the following payment methods:

Telegraphic Transfer(TT): A telegraphic transfer (TT) is an electronic method of transferring funds utilized primarily for overseas wire transactions. It’s very convenient to transfer.

Bank/Wire transfer: To pay by wire transfer using your bank account, you need to visit your nearest bank branch with the wire transfer information. Your payment will be completed 3-5 business days after you have finished the money transfer.

Paypal: Pay easily, fast and secure with PayPal. many other credit and debit cards via PayPal.

Credit Card: You can pay with credit card: Visa, Visa Electron, MasterCard, Maestro.

    Your Original Large PCB Supplier

    PCBMay is a highly recommended manufacturer and supplier of Large PCB. We are a reputable company in this PCBs industry. We obtain a rich experience, and that experience enables us to deliver our products with confidence.

    Its unique feature allows us to build up to 24 inches of PCB with almost any PCB material type.

    We offer a wide selection of Large PCB like Mother Board PCB Circuit Board, Home Electronic Dishwasher PCB, Large-Sized PCB Assembly, Custom Good Quality PCB Assembly, Two-Sided PCB Mother Board Scale, and many more.

    PCBMay, a professional Large PCB manufacturer, is genuinely trusted supplier when you use it. PCBMay Large PCB has passed quality inspection to ensure the best work in your PCBs production line.

    We are your excellent answer for your Large PCB materials. We keep prioritizing professional services and manufacturing high-quality products. Subjected to lifetime support and assistance for your Large PCB businesses and projects.

    We can provide you an excellent Large PCB with the best design and best capacity. PCBMay can supply you Large PCB that is suited and perfect for your business. We always strive to meet your project’s Large PCB requirements.

    And addition, We also offer installation and operator training to ensure the proper use of every piece of Large PCB and other types of PCBs. We are the perfect solution for any PCB needs.

    PCBMay is a professional Large PCB Assembly. Get the best and high-quality types of PCB at PCBMay services.

    Please feel free to contact us for more information, orders about our Large PCB. Send your inquiry Now!

    Large PCB: Ultimate FAQ Guide

    Large PCBs are something we don’t see very often on our electronic devices. With each large PCB, there is a specific function.

    Large PCBs are subjected to a time-consuming procedure. This is why it is critical to work with a big, reputable PCB maker such as PCBMay, who can deliver high-quality large PCBs in a short period.

    What Is A Large PCB?

    A circuit board with a width of over 12 inches is regarded as a Large PCB. It goes without saying that when you draw up a plan 20 inches wide via whatever length, you are working on a giant board.

    The limits of mechanical surface mount technology have reached a width of 30 inches or more. Anything must be taken into consideration if broader than this and other production techniques. Another thing to remember is the number of layers in your design.

    Large PCB

    Large PCB

    A Large PCB is often utilized fiber like a backplane, which necessitates using many layers. Furthermore, these boards usually have many connections and broad power and ground surfaces, among other characteristics.

    What Are The Large PCB Features?

    Large PCBs are used in specific situations because of their unique characteristics. Manufacturers often use large PCBs because of their distinct advantages over standard PCBs. Large PCBs  have a number of features, including:

    Enhanced reliability

    The Large PCB is ensured to function reliably for a long time by a range of inspections, testing, and aging tests.

    Great designability

    The criteria for different characteristics (electrical, mechanical, chemical, physical) of PCB can be met via standardization and normalization of design, which can be completed in a short amount of time and with excellent efficiency.

    Great productivity

    Using contemporary management techniques, it is possible to carry out standardization, scale-up, automation, and other aspects of production while maintaining consistency in product quality.

    Easy testing analysis

    The manufacturer undertook the development of a reasonably comprehensive trial method, test standard, and various test equipment and instruments to verify and evaluate the quality and life of the Large PCB product.

    Capability for assembly

    PCB products enable standardized assembly of different components, but the parts can also be automated and bulk manufactured. Manufacturers can simultaneously build PCBs and other elements into more extensive modules, platforms, and entire machines.

    Great maintenance

    As PCB goods and components are combined into standardized, developed, and produced pieces, they are likewise standardized. When the system fails, the system may be rapidly, quickly, and flexibly changed.

    PCB Maintainance

    PCB Maintenance

    What Are The Large PCB Applications?

    Every electrical device makes use of PCBs. Large PCBs are utilized in large projects or goods. This kind of PCB is not used in consumer electronics. Instead, it is used in a variety of sectors, including the automobile and aerospace industries. We will look at some of the applications for Large PCB in this section:

    Industrial Application

    The equipment in industries must be durable, heat resistant, and capable of high performance. As a result, Large PCB is an excellent use for it.

    Industrial Equipment

    Electric drills, electric conveyor belts, electric presses, cranes, hooters, and cutters

    Power Equipment

    DC-AC inverters, Servo Motor Driver, Power controller, and PLC.

    Automotive Applications

    Electric cars have become more prevalent in recent years. Electronics are used in the automotive industry. To function, they must utilize large PCBs.

    Safety and Detection

    The newest vehicles have sophisticated electronics that utilize lenses and radar systems to identify objects nearby and prevent collisions. This safety mechanism works with high-end PCBs.


    Many vehicles now have GPS trackers for safety. Many businesses need this when selling new cars to consumers.

    Audio/Visual Devices

    Advanced decks in modern vehicles utilize audio equipment, including FM radio loudspeaker driver circuitry and USB players. Similarly, tiny LCD video gadgets to listen to music or monitor the situation behind the vehicle for safety.

    Aerospace Applications

    Aircraft Large PCB

    Aircraft Large PCB

    Aerospace encompasses anything that can fly & reach the upper atmosphere. Aircraft, drones, quadcopters, fighter aircraft, rockets, satellites, and spacecraft, among other things, fall under this category.

    The machine’s designs must include a high degree of accuracy and long-term endurance. As a result, the electronics connected with them must be durable and reliable while also functioning correctly.


    One example is the use of accelerometers and gyroscopes in precise positioning and guidance systems for rockets and missiles, tracking and control premised on thermal imaging, pressure gauge, temperature probe, moisture sensor, height sensor, torque, as well as force sensors, and other electronic devices such as these.

    Satellite Control

    Magnetic sensors, Gyroscopes, and response wheels, and Solar Panel deployment electronics are all examples of electrical devices.

    What Are The Different Types Of Large PCB?

    Large PCBs are often categorized according to the frequency they operate at, the number of layers they include, and the substrate they are made of. Some of the more common kinds are described further below.

    Single-Sided PCB

    Single-sided PCBs are the most common circuit board since they include just one layer of substrates or base material.

    Double-Sided PCB

    Unlike single-sided PCBs, double-sided PCBs contain metal conducting layers on both surfaces of the substrate.

    Double-Sided PCB

    Double-Sided PCB

    Multi-layer PCB

    Multi-layer PCBs are circuit boards containing over two copper layers, such as 4L, 6L, 8L, and so on.

    Flexible PCB

    Flexible PCBs are built on an elastic base material.

    High-Frequency PCB

    High-frequency PCBs are utilized in the frequency band of 500MHz to 2GHz.

    Rigid PCB

    Typically, rigid printed circuit boards whose base substance is made of solid material and thus cannot be bent.

    What Is The Standard Dimension Of A Large PCB?

    Large PCBs are created for each gadget and project. To accommodate this, they need various sizes and proportions. For a large PCB, it is not possible to take a base dimension. Instead, you can design your own that is tailored to your own device’s needs.

    Because the typical Large PCB substrate panels measure 19.7” by 31.5”, this is the theoretical highest dimension for a single PCB if we utilize the whole board like a substrate.

    PCB Sizes

    PCB Sizes

    What Are The Considerations While Designing A Large PCB?

    Because of the vast quantity of factors in Large PCB design, if you are not acquainted with the terms and concepts. It will be described in detail at this step how your PCB will look, how it will work, how it will contain the components, where it’ll be placed in your device, and its overall size.

    Schematic documentation

    A proper design approach begins with detailed diagrams. Questions about the board’s physical arrangement often emerge during manufacturing. A clean diagram may save time by showing the intended circuit flow. Include as little detail as feasible on the layout schematic, like trace length, part placement requirements, board housing details, etc.

    PCB Schematic Documentation

    PCB Schematic Documentation

    Added eyes

    Often the designer and engineer of the circuit are not the same. In such situations, the PCB layout specialist should contact the original designer to verify the layout fulfills the design requirements. Cooperation at this point can save time & expense in the production of PCBs that work as planned and perform as expected.

    Component location

    For board functioning, essential components, including power sources and input/output ports, should be specified. Another part arrangement can also degrade PCB performance, such as arranging circuits so that the physical proximity doesn’t affect one another’s functioning.

    Power supply

    Large circuits need power supply routing to reduce “noise.” Standard techniques like rails-to-ground or rails-to-rail may be successful.


    Parasitic capacitance, or stray capacitance, may cause problems in large circuits. Knowing the cause of such capacitance and preventing circuit instability or oscillations is critical for large PCB design. Parasitic concerns on PCB design include ground plane use and packaging.


    Circuitry with high-speed signals may cause signal interference on boards. PCB designers should prepare appropriately to prevent signal route conflicts using various techniques.


    The materials used in board manufacturing help reduce noise levels and crosstalk. Dielectric properties vary across materials, and dielectric loss constants result in faster displacement.

    Trace construction

    The usage of microstrip traces can also affect signal quality. Trace length, depth, and material capacitance all have a role. Its impedance, inductance, and capacitance influence the signal route’s efficiency and possible noise separation.

    How To Manufacture A Large PCB?

    Due to all necessary design details and data, the PCB maker will build the input board. There may be many various circuit boards, including single-sided PCBs, multi-layer layouts, and flexible circuits. In this instance, we examine the basic procedures to manufacture an additional circuit board.

    Making a Circuit Design

    The initial step in producing circuits is to transform digital pictures from PCB design databases to boards. One of two methods is used to transfer picture data to the board.

    The standard imaging technique for PCB manufacturing since mass production began. A photoplotter can generate precise film circuit pictures that are used to guide screen printing.

    Circuit Board Layering

    Co-circuit boards have multiple layers of dielectric and copper conductors. Other insulators, such as FR-4, are used as well. FR-4 is a carbon dielectric main composition sandwiched between copper foil layers.

    Inner Layer of Large PCB

    The first step is to create circuit pictures on the inner cores of PCBs:

    A film foil protects a copper plate in the center. Patches and streaks in the copper circuit show the picture resistor.  The copper is chemically removed from its unprotected etching.  After this, the core sheets are inspected for defects using AOI.

    Drilling Holes:

    Multiple holes or passive elements should be boiled through the PCB during the manufacturing process. They serve various functions. Installing modules with holes is a certainty. Another is aligning the adjunct faculty layers. This is crucial for multi-layer PCBs.

    Drilling Holes In PCB

    Drilling Holes In PCB


    Soldering and depthless fiber layer are the last two steps of PCB manufacturing. A solder mask is put over the Large PCB to prevent corrosion of the copper to guarantee proper soldering. The panel has names, figures, symbols, component IDs, and other word elements written in silk.

    Bare-board test

    “Tracksuit bottoms” as well as “available” are typically ticked on blank plates. This is called electric PCB testing. The connection between two locations should never be short. They lack an open connection between subjects.  The CAM device instructs the electrical testing to provide a voltage to every contact point and confirm that voltage.


    The device pipes are inserted through slots, and the holes hold the elements in place. The piece is surface mounted on the PCB, with edges aligned with the pads or on the PCBs borders. The solder pad initially holds the modules in place until the surface-mounting parts are bonded to the PCB on both sides.

    The connections are soldered using a hole and a substratum mount; after they are cooled and strengthened, the soldering holds the modules safe in place and connects them electromagnetically to the frame.

    This video will give you a better understanding of the PCB manufacturing process

    What Are The Issues When Fabricating Large PCB?

    The manufacturing of a Large PCB will provide unique challenges that a standard PCB will not contend with. Here are some of the areas where a broad board may have an impact.

    High-layer fabrication

    Long PCB producers can be qualified for CM layer counts based on manufacturing capabilities. Specific abilities range from 2 to 4 levels, 6 to 10 layers, and 12 and above. Larger layer counts need more specialized suppliers, slowing PCB manufacturing.

    Quick Response PCB

    High-speed layout, voltage control, copper density, and copper widths for traces will slow down sheet manufacturing.

    Additional Charges

    Plates support PCBs. When you own a panel, the more PCBs you produce, the cheaper each PCB becomes. Since large boards don’t fit into standard sizes, you pay a fixed fraction per unit.

    Multiple Connectors

    The test mount must contact all adapter objectives to thoroughly test and verify the large PCB fabrication and assembly processes. With so much electrical wiring in the background, it will take longer to test.

    Thermal impact

    Heating and cooling solder joint procedures may be influenced by irrigation and electricity planning. More copper on the chassis means more heating and corrosion. This may prolong the adjustment of the connection heat treatment profile.

    Thermal Impact On Large PCB

    Thermal Impact On Large PCB

    What Is The Standard Thickness Of A Large PCB?

    Many variables influence the functioning of a PCB during manufacture. One is the PCB thickness. Your PCB’s thickness will affect its conductance and resistance; therefore, you must select the right thickness for your application. This section will explain the different PCB thickness regulations and how to choose the right one for you.

    PCB Thickness

    Layer count affects total PCB thickness. The combined core and prepreg’s average thickness range is between 0.008-0.240 inches.

    Standard PCB Thickness

    The usual depth is 0.063 inches (1.57mm). This is because 0.063-inch plywood sheets are utilized as substrates in electrical equipment.

    PCB Thickness

    PCB Thickness

    Copper Thickness

    The PCB’s current typically determines the copper thickness. Internal copper layers generally are 1.4-2.8 mm thick and 2-3 oz.

    PCB Trace thickness

    The designer typically specifies PCB trace thickness. The copper traces may overheat and destroy the PCB as the current flow rises.

    What Are The Components Mounted On Large PCB?

    A Large PCB’s parts are assembled to power our gadgets. To get you started, here are ten typical electrical components placed on PCBs! Once you look at them, the concept of having many distinct elements in a PCB doesn’t appear to be so alien anymore.

    PCB Components

    PCB Components

    • Resistors
    • Capacitors
    • Inductors
    • Transformers
    • Transistors
    • Diodes
    • Integrated Circuits
    • Switches and Relays
    • Sensors
    • Oscillators

    What Are The Assembly Standards Of Large PCB?

    IPC-A-610 is one of the most frequently utilized industrial standards in the production of large circuit boards. This standard covers the handling of electronic assemblies, appropriate hardware installation techniques, acceptable soldering outcomes, and many other elements of producing surface mount.

    Assembly Standards Of PCB

    Assembly Standards Of PCB

    Other IPC assembly requirements your manufacturer should use in creating your Large PCB include:

    IPC-A-600—Printed boards acceptability. This specification is used to examine bare PCBs arriving from a PCB manufacturer.

    IPC/WHMA-A-620C—Cable and Wire Harness Assembly. Your manufacturer uses this to make cables for your PCB assembly.

    IPC-A-630—Acceptability Standard for Electronic Enclosure Manufacturing, Inspection, and Testing

    IPC 7711/7721C—Electronic Assemblies Rework, Adjustment, and Repair

    Although several additional IPC standards apply to the assembly PCB, these are the most important ones which your manufacturer should utilize to guarantee the success of your boards.

    What Are The Large PCB Assembly Process Step By Step?

    The assembly procedure of a large PCB can be complicated since numerous variables are needed. In PCBMay, we have the finest large PCB assembly equipment and the expert to supervise the whole process.

    Here you can use the assembling procedure for your large PCB.

    SMT Paste Screening Solder

    The first stage is the application of the solder paste in the bare PCBs in the PCB assembly process.

    Machine Placement

    After applying solder paste to the base PCBs, they are transferred to automated Pick & Place equipment for component installation.

    Pick And Place Machine

    Pick And Place Machine

    Reflow Soldering

    With firmly installed components with solder paste below the pads, the PCBs must undergo the reflow soldering stage.

    X-Ray Inspection

    X-Ray Inspection will take place with any boards comprising BGA, QFN, or other leadless packaging types.

    Wave Soldering

    Wave soldering is a PCB assembly technique that includes transmitting panels on a conveyor by use of a “wave” of molten solder.

    Manual Soldering

    Manual soldering is usually employed when a PCB design includes sections not suited for reflow or wave welding.

    Last inspection

    Inspections should be carried out with each step of the Large PCB assembly to help locate the cause of any problem

    What Are Types of The Large PCB Packaging Process?

    Large PCB packaging has to protect PCBs from high heat, physical damage, and more. The packaging does not safeguard the components against high temperatures but protects against electrostatic discharges (ESD) that are essential.

    Bubble wrap

    This is likely the most minimal packaging you will see unless you are sending bare PCBs. This is acceptable for elementary, sturdy boards, but you want to bump them up if you have sensitive components.

    ESD Bags

    Many ESD-sensitive parts on circuit boards and bulkier hardware are transported inside ESD bags. They are bright, silver, and typically feature a Ziploc-style closure.

    Moisture barrier

    If your Large PCBs are sensitive to moisture (mainly at a certain level) or are transported by sea freight in a wet environment, look for water-resistant packaging.

    PCB Moisture Packaging

    PCB Moisture Packaging

    Vacuum sealed

    You can suck all air out of the packing surrounding your PCB for the hard-core moisture-sensitive circuit board applications.

    How To Specify Control Impedance In Large PCB?

    The impedance control of your large PCB increases the operation of your board. Initially, you need to understand the factors that may influence impedance control.

    Trace Width

    The trace width of a Large PCB is equivalent to the width and coating of a copper foil.

    PCB Trace Width

    PCB Trace Width

    Copper Thickness

    The thickness of copper influences the impedance. If the thickness of copper rises, the impedance decreases.

    Dielectric Thickness

    The dielectric depths that of the insulating substance that separates the track from the circuit board.

    Dielectric Constant

    A PCB’s dielectric constant tends to vary with frequencies inversely. The Large PCB is excellent for higher frequency and lower power impedance.

    What Are The Testing And Inspection Methods Of A Large PCB?

    Assembly testing of PCBs is a crucial component of the manufacturing process. Though manufacturers employ different methods. Typical Large PCB testing and inspection techniques include:

    In-circuit Testing

    This is presently the most effective PCB assembly testing method. This testing is typically done on stronger connections. This test includes the use of fixed probes that are set out in a manner that corresponds to the PCB design.

    The probes inspect the solder connection to ensure that it is in good working order. It takes just a few simple presses of the board against the bed of needles to begin the test on the nail bed.

    PCB In-Circuit Testing

    PCB In-Circuit Testing

    Automated Optical Inspection (AOI)

    One or more 2D or 3D cameras are used to image the Large PCB. The software then compares your board’s photos to the board’s designs. Whenever a board does not conform to the design to a particular extent, the board is highlighted for examination by a technical staff member.

    It is possible to utilize AOI to identify problems early on and shut down production as soon as possible. Unfortunately, it does not provide power to the panel and may not provide 100 percent coverage for all component types in all situations.

    X-ray Inspection

    This testing is called AXI. This is a comprehensive inspection tool, not a testing device.

    Flying Probe Testing

    Flying probe testing uses needles attached to a probe placed on an x-y matrix created using basic CAD. This video will provide you with a more in-depth understanding of PCB testing and inspection.

    How To Choose The Right Large PCB Manufacturer?

    When looking for a manufacturer to construct your prototype, make sure they can create big circuit boards. Before choosing a manufacturer, find out:

    Manufacturing processes

    Find out whether the manufacturer can manage problems like big board thermals and if their manufacturing methods are flexible enough to meet these requirements.

    Large PCB Manufacturing

    Large PCB Manufacturing

    Testing capabilities

    Another problem is how many connections can be tested and if the capabilities of manufacturers can thoroughly test your giant board.

    Fabrication vendors

    The manufacturer you select should also have connections with PCB manufacturing companies that can rapidly produce big PCBs.

    Finally, when designing big PCB prototype boards, you need a manufacturer who understands the difficulties and concerns of manufacturing larger panels. With the proper knowledge and skills, your prototype has the most excellent chance of success.


    Large PCBs are utilized in a variety of significant applications and gadgets. As a result, it should be meticulously manufactured and assembled to exacting standards. Due to their size and usage, Large PCBs can be challenging to manufacture.

    PCBMay is China’s best Large PCB manufacturer. If you do have any questions regarding Large PCB, please contact us.

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