Productive Cavity PCB Manufacturer in China

Having a competent Cavity PCB fabricator is essential for your business. This type of PCB is utilized in high-end devices with the strictest specs. With PCBMay, you can be assured of 100% satisfaction.

  • Produce Cavity PCB for you as OEM/ODM
  • Prototype PCB service available
  • Fast PCB for your urgent demands
  • Compliant with RoHS for international market
  • Extensive experience in PCB industry
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Effective and Durable Cavity PCB from PCBMAY

Relax and let PCBMay take care of your Cavity PCB needs. We are the industry leader in all kinds of sophisticated PCB. We use SMT and PTH, conduct Backdrilling and PCB assembly.

Our world-class facility in China is organized and in top form. We are also a leading provider to giant brands in US, Canada, and European nations. We make Cavity PCBs that last long.

You can trust us with your Cavity PCB needs!

Types of Cavity PCBFor Your Requirements

Microwave Cavity PCB

A Microwave Cavity PCB features low signal distortion and high-density circuit design. For base material, we use high-class FR4 or Teflon material. Microwave PCBs can be stacked, for example, 16 Layer PCB.

High-Power Cavity PCB

The typical High-Power Cavity PCB is built with durability in mind. We design the IC density and PCB material after careful consideration of how power current will flow through the multilayer board.

Automotive Cavity PCB

No other industrial application is more versatile than those found in cars.  Automotive Cavity PCB covers sensors, safety devices, lights, navigation systems and more. Optimizing these is why Cavity PCBs are used.

Military Cavity PCB

Characterized as extremely accurate pieces, Military Cavity PCBs meet high standards. They need to pass regulatory screenings. These PCBs can be part of vessel identification and tracking, military-grade radars and antennas.

Telecommunications Cavity PCB

These complex PCBs are essential for daily communication (personal and commercial). Hence, the Telecommunications Cavity PCB is constructed with Rigid PCBs and Multilayer PCBs, for example 20 Layer PCB using SMT assembly.

Wireless Cavity PCB

PCBMay is capable of making Wireless Cavity PCB. This type of PCB falls under the high-definition PCB category. Hence, we execute various functional tests to make sure there are less defects.

PCBMay Produces Superlative Cavity PCBs

An experienced manufacturer like PCBMay brings better quality PCBs. Like all of our PCBs, our Cavity PCBs come out of our factory only after rigorous e-testing.

As you can see from our video, we execute professionalism with our manufacturing process. When it comes to your order, your happiness is our priority. So, we exhaust all measures to fulfill your requests.

We can deliver to you the Cavity PCB you deserve.

VPC Plating Line

Related Cavity PCB

Altium PCB
Altium PCB
An Altium PCB is a PCB design or schematic. PCBMay accommodates all your Altium PCB designs.
Copper Clad PCB
Copper Clad PCB
Copper Clad PCB usage covers the widest ground in PCB substrates. Thick or regular width available.
PCBs that are used for navigation are GPS PCBs. These products can have wireless capability installed.
Isola PCB
Isola PCB
Isola PCB is actually a whole range of products offering specialized laminates. Based on copper material.
Rogers 3003
Rogers 3003
A stable PCB over a wide range of temperature, Rogers 3003 has Dk of 3 (+/-0.4).
Rogers 3006
Rogers 3006
Rogers 3006 is another Rogers 3000 product—its targeted applications are miniaturized devices or small circuits.
Rogers 3010
Rogers 3010
Rogers 3010 laminates can be used for sensors and antenna systems. It has a high Dk.
Rogers 3210
Rogers 3210
The unique Rogers 3210 is the only Rogers 3000 product available with a rolled copper option.

Cavity 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.

    PCBMay – Precise in Manufacturing Cavity PCB Products

    The fundamental principles of using High-Frequency and High-Speed PCBs include the supreme functionality of the multilayer board. It is then considered vitally important for Cavity PCBs to be installed. With PCBMay at your side, your product is 100% guaranteed to be operational.

    • Correct calibration of cutouts in PCB inner layer
    • Rigorous AOI and E-testing
    • Quality Management System for SMT
    • Render expert CAD support
    • Positive implementation in Microwave & RF technologies

    No doubt, when discussing the requirements of a PCB supplier, you need one that is competent and experienced. Industry experience in the usage of Cavity PCB is also another factor. These are the two main reasons why you can trust PCBMay. Unlike new PCB or PCBA companies, we have long-standing experience in this field.

    We assure you that we know what we are doing when you hand us your order. For Cavity PCBs, customers generally request Aerospace PCB, PCBs with specs for Military use, and those used for advanced telecommunication. We have fulfilled orders for Satellite PCBs, Voice over Internet Protocol (VoIP), IOT PCBs, and other similar items.

    What’s more? Our staff is easy to talk to since we value open communication with customers. For communication channels, you can reach us through chat, email, or call anytime 24/7. Since we are an international business, we adjust to your convenient time, wherever you are in the world. Our friendly salespeople can walk you through the easy Cavity PCB ordering process.

    PCB Manufacturer

    To inquire now. Your Cavity PCB is waiting to be purchased!

    Cavity PCB: The Ultimate FAQ Guide

    PCBs employ a variety of technologies to improve their performance. Cavity PCBs, or cavities on PCBs, are one of the strategies used to ensure that the size of PCBs is accurate.

    PCBs with cavities will make component placement and assembly easier.

    You may, however, have a few queries about cavity PCBs. If that’s the case, don’t be concerned. You’ve arrived at the right place.

    In the next sections of this post, we’ll address a few fundamental queries. Your questions concerning PCB cavities will be answered if you read the complete post.

    What Is Cavity PCB?

    PCBs are circuit boards that provide the surface for electrical components and allow for the creation of specific electrical functions. PCBs may be found in almost every electronic device.

    The majority of the time, PCBs are constructed from many layers. Consequently, you must connect the layers together in order for the layers’ functionality to be guaranteed.

    Cavities on a printed circuit board, on the other hand, are cuts or holes that are drilled to allow many layers to be connected together.

    Cavity PCB

    Cavity PCB

    Cavities are mostly created by drilling through the outer copper layer of the cavity PCBs. Then they go into the inner layers of the cavity PCBs. However, the holes do not penetrate all of the layers of the printed circuit board.

    Cavities are mostly utilized to minimize the overall height of the components they surround. To put it another way, the goal is to improve the clearance between the components on the board.

    Because the present period is focused on component and device downsizing, cavities are among the most essential aspects of PCBs.

    How To Make Cavity In PCB?

    Unlike other procedures, making cavity PCBs is a little complicated. To create cavities, you must utilize low-profile pp+ and a controlled depth milling technique, as well as interior filling gel materials.

    You may face the following complications during the procedures.


    The first step is to slot the core board and Prepreg together. Press them once they’ve been slotted. During this time, the board’s lamination offset and cavity deformation may be seen.

    Gum Flow Issues

    You will see the standard slotting size is 0.5 mm larger than the cavity. The cavity bottom may be overflown with gum.

    This problem might increase due to the slotting size of 1 mm. In this case, the cavity area with core boards faces dielectric loss issues.

    You Have To Recover Some Issues To Create Cavity In PCBs

    You Have To Recover Some Issues To Create Cavity In PCBs

    Damage Of Materials

    The cavity boards get thinner as the process of downsizing progresses, and the cavities become shallower as the process progresses. In this situation, the cavity region may be more prone to depression than in the other.

    You may manage the issues in making cavities in cavity PCB step by step. 

    Deviation Issue Resolving

    The deviation issue might be solved by using laser cutting on your board copper area. The cavity wall that the deviation creates is a solution against the deviation itself.

    Gum Flow Solution

    You need to resolve the gum flow issues by laser removal. Because the high-frequency materials hold particular flow gum that the window opening cannot resolve.

    Material Damage Issue Solution

    You should use a low-energy drilling technique on the copper surface of the cavity PCB. This will not harm the cavity PCB board’s materials.

    What Are The Materials Used In Cavity PCB?

    The FR4 is one of the most common cavity PCB materials. Usually, cavity PCBs use high-frequency materials. Following are some common high-frequency cavity PCB materials that are used.


    It is the most used and popular PCB material. FR refers to flame retardant, which meets the particular requirements by NEMA LI 1-1998.

    FR4 Material

    FR4 Material

    FR4 PCB substrate companies with excellent mechanical, thermal, and electrical performance. The high-grade FR4 is used for lower multiple-layer counts.

    Fr4 is the cheapest PCB material existing.

    Polyimide Laminate

    Polyimide is higher in complying with high temperatures. Polyimide is a thin and more flexible material that is used in high-grade flexible cavity PCBs.

    Polyimide is primarily stronger, mechanically, and electrically more stable than FR4. Polyimide shows more stability in material expansion. It is also more expensive than FR4 material.


    Teflon is another high-grade material, stronger and reliable than the previous two. Teflon is developed with more thermal, electrical, and mechanical performance.

    Teflon may be used in glass fabrics, unsupported films, and or with particular fillers. Teflon holds more high-speed capabilities for high-frequency, and high-speed PCBs.

    It is expensive as well.

    Besides these materials, aluminum, BT, cyanate ester, blended materials, ceramics, etc., are used in malign cavity PCBs.

    Is It Possible To 3D View Cavity In PCBs?

    Yes, the cavity in a PCB may be seen in 3D using the Altium design program. However, you must first complete a series of stages.

    Create a section in the PCBLib for recognizing and seeing the cavity in 3D. The area must be defined in the cavity PCB’s mechanical layers.

    Cavity PCB 3D View

    Cavity PCB 3D View

    Ensure that the Kind property is set to “Cavity Definition.” Set the cavity’s needed height at the same time. This is useful if you want to expose the whole cavity.

    The settings are shown in the Properties Panel. The height you choose will determine how far the program will remove layers from the cavity PCB’s surface.

    To keep the callout layers of your cavity PCB’s board housing separated, you may add an additional mechanical layer. The approach enables you to add an additional 3D body to the cavity layer components.

    By configuring the cavity for the components, you are now ready to observe the 3D of the cavity. The Altium design program will guarantee that the layer is not cut off partly. This will simplify the interaction between the cavity and the layers.

    What Are The Advantages Of Cavity In PCBs?

    The cavities are generally utilized on PCBs to reduce the size of the board and electronics. Cavities allow the boards to be thinner and more compact. They also provide varying depths for the various layers of multilayer PCBs.

    Cavity PCBs Are Advantageous In Many Ways

    Cavity PCBs Are Advantageous In Many Ways

    Aside from that, there are a number of benefits to using cavities in cavity PCBs.

    • The superior surface quality of the boards will provide maximum thermal stability.
    • Ensure that CAD data and laser parameters are kept separate and distinct.
    • In a multilayer PCB with cavities, a single PCB will assure varied layer depths.
    • The board’s performance is ensured by the presence of cavities.
    • On the cavity PCB, cavities increase the heat dissipation area.

    What Are The Surface Finishes Of Cavity PCBs?

    Surface finishes are the metal coating of the PCB board that protects the exposed conductive area of the PCBs.

    Surface finishes are among the most essential aspects of boards manufacturing. There are different types of surface finishes.


    Electroless Nickel Immersion Gold and Electroless Nickel Electroless Palladium Immersion Gold are two types of gold finishes with nickel and palladium.

    In the NEIG, nickel is used to protect the copper of the PCBs, and gold on the other hand protects the nickel from oxidation.

    ENIG Surface Finish

    ENIG Surface Finish

    Aside from this, palladium is another protective material that is comparatively cheap and more protective. Both are RoHS compliant.

    Immersion Tin And Immersion Silver

    Immersion tin is a thinner tin coating applied to the board’s copper. Immersion silver, on the other hand, is a thinner silver coating applied to the boards’ conductive copper.

    Immersion tin, on the other hand, gives some additional exterior planner finishes on the copper pads. This allows the pads to be used with SMT components.

    Organic Solderability Preservatives (OSP)

    OSP is one of the organic protective finishes to the copper of the boards. It provides transparent water-based lamination bonds to the copper.

    Hot Air Solder Leveling (HASL)

    HASL is the cheapest surface finish that uses lead-tin to cover the coppers.

    What Is Cavity Resonator In Cavity PCBs?

    A cavity resonator is an electronic device that consists of space that is enclosed by metallic wales. Cavity resonators are used in microwave systems. A different proneness is used to power up frequencies up to the peak of amplitudes.

    Cavity Resonator

    Cavity Resonator

    Electromagnetic, electric, dimension, mass, or acoustics determine the frequencies. For example, above the frequency of 3 MHz, wires and transistors cannot handle the frequencies. In this case, to amplify the frequencies and keep them constant, cavity resonators are used.

    There are 7 types of cavity resonators used in cavity PCBs.

    • Regulated,
    • Un-Regulated,
    • Inductive,
    • Reentrant,
    • Co-axial,
    • Capacitive, and
    • Waveguide cavity resonator.

    What Are The Uses Of Cavity Resonators?

    In most cases, waveguides or very fundamental dielectric materials are used to construct cavity resonators. On printed circuit boards, the cavity resonator is used to store magnetic and electrical energy.

    It is possible to identify several resonant frequencies in the cavity resonator that are associated with the electromagnetic border of the printed circuit board.

    If you want to accomplish resonance balancing, you must make sure that all of your design parameters are balanced against the length of your cavity. Consequently, the wavelength must be an integer multiple of the half wavelength of the resonance in order to be considered valid.

    Various kinds of cavity resonators are used in a variety of applications. A microwave cavity resonator is a device that is used to regulate microwave receivers, transmitters, and measurement equipment.

    An acoustics cavity resonator, on the other hand, makes sound by causing air vibrations to pass through a single hole. This is used in conjunction with the acoustic filtration system.

    What Is Waveguide Cavity In Cavity PCBs?

    The waveguide cavity is a mechanism for routing critical radio frequency communications through the cavity PCBs. Aside from providing natural isolation and mode selection, the waveguide cavity also provides mode selection. The waveguide cavity is responsible for ensuring that the materials have a low loss.

    When it comes to waveguide cavity geometry, almost any size and form is possible. However, as a competent cavity printed circuit board designer, you should adhere to the standard waveguide cavity construction technique.

    Waveguide PCB Structure

    Waveguide PCB Structure

    The standard technique distinguishes the manufacturing of waveguide cavities from the production of microstrips and strip lines. Because TEM wave propagation will only be seen at high frequencies, it is important to understand how they work.

    You will get several facilities for waveguide cavity creation such as model selection, bandwidth tuning, field distribution engineering, etc.

    What Are The Types Of Cavity PCBs?

    The main use of the cavities is in the PCB with more than one layer. In this regard, cavity PCBs are mainly two types: Double-sided PCB, and Multilayer PCB. High-frequency PCBs, high-speed PCBs, or PCBs with other functionalities can be made in double-sided mode and multilayer PCB modes.

    You will find the cavity PCBs in the following types:

    Double-Sided PCB

    Two conductive copper layers are used to make a double-sided PCB. holes are drilled to connect the layers with each layer.

    Double-Sided PCB

    Double-Sided PCB

    Multilayer PCB

    There are at least three conductive copper layers in the multilayer PCBs. The layer stacks up are arranged in sandwich fashion on a single board with multiple layers.

    Let’s check the following video on how multilayer stacks up work for multilayer PCBs:

    Rigid PCB

    Rigid PCBs are those that are constructed of rigid materials and cannot be bent or folded. Rigid printed circuit boards (PCBs) are mostly employed in static applications where stiffness is required.

    Flexible PCB

    Flexible materials are employed in the fabrication of flexible multilayer cavity printed circuit boards. They have the ability to be folded and bent.

    Rigid-Flex PCB

    Rigid-flex printed circuit boards are a hybrid of rigid and flexible PCBs.

    Is Laser Technology Applicable for Cavity PCBs?

    Yes, it is possible to employ laser technology for cavity PCBs.

    You may either utilize laser-ablated copper holes directly on the exposed dielectric or use them as a mask on the exposed dielectric. The hollow was created primarily by the use of copper etching in conjunction with other techniques. The aspect ratio that is necessary is bigger than 1:1.

    Cavity In PCB With Laser Cutting

    Cavity In PCB With Laser Cutting

    The hollow walls are created by the laser depending on the sorts of materials used and the depth of the boards.

    You will be able to make a clean surface plating for coating, wiring, plating, and soldering reflow if you use the right ratio of energy infrared rays.

    The following video demonstrates the drilling of PCBs with laser cutting:


    What Are The Cavity PCB Components Assemble Technologies?

    The most used components assembly technology is surface mount technology in cavity PCBs. Besides this, two different technologies are available too: Through-hole technology and Press-fit technology.

    Surface Mount Technology (SMT)

    In the SMT, the PCB components are directly placed onto the board. There are conductive copper pads on the board. A machine then picks the components and places them onto the conductive pads of the board.

    After placing the components, the PCB boards go through a reflow oven. The reflow oven first ensures the balancing temperature to the board and components. Then, the oven ensures the attachment of the solder paste onto the components and solder pads joining.

    Through-Hole Technology

    Through-hole is the oldest component assembling process of the printed circuit boards. First, you need to drill the PCB boards on the etched copper traces.

    Then you have to penetrate the components through the through-holes of the board, and solder them with soldering iron.

    Through-Hole Soldering

    Through-Hole Soldering

    Press-Fit technology

    Press-fit assembling technology is a solder-free assembling process of components on PCBs. You will just need to press the components on the PCB boards through the press-fit connector to attach.

    Press-fit pins are pressed through the plated holes on PCB boards.

    What Is Cavity PCB Edge Plating?

    PCB edge plating is the process of coating the printed circuit board’s edges with protective materials. Like surface finish, you can use different types of surface finish materials to plate the edges of the PCBs.

    Cavity PCB Edge Plating

    Cavity PCB Edge Plating

    Most of the time, the PCBs edges are comparatively unprotected. The edge plating protects your PCBs edges from oxidation. To plate the edges, you need proper knowledge and technical capabilities though it is another simple part of PCB manufacturing.

    There are various advantages of edge plating of your cavity PCBs. Theta er as follows.

    • The conductivity and performance of the material are improved.
    • Improve the current-carrying capacity of printed circuit boards.
    • Improve the support for the printed circuit boards that slide into the metal enclosures.
    • It serves to protect the margins from being damaged.

    What Are The Consequences Of High Heat In Cavity PCBs?

    High heat is the heat that exceeds the compliance limit of the cavity PCB materials. High heat on the PCBs can happen for many reasons such as high-frequency, wrong components placements, improper lamination, insufficient heating absorption system, etc.

    High Heat Can Damage The PCB's Physical Integrity

    High Heat Can Damage The PCBs Physical Integrity

    However, high heat can harm your cavity PCBs in many ways. You may face the following consequences while facing high heat on your PCBs.

    • The integrity of your cavity PCB might be lost due to the high heat. The layers you use in your multilayers PCBs are prone to fluctuations in the temperature. High heat may cause structural damage to the layers.
    • With high heat on your cavity PCBs, your boards’ circuit lines may be expanded. The circuit lines and the conductive traces might be changed due to overheating. For this, the signal integrity of your PCB will be lost.
    • With high heat, the different PCB materials will expand at different rates. Because all materials do not have the same coefficient of thermal expansion. In his case, the materials will not comply with each other. So, the physical malfunction will happen.
    • One of the sensitive issues that might happen for high heat is oxidation. For the oxidation of your PCBs, uneven heat dissipation, and protective coating elimination will happen. Also, oxidation will lead your conductive materials to destruction.

    What Is Electromagnetic Interference In Cavity PCBs?

    Electromagnetic interference, or EMI, is a result of electronics (PCBs or others) affecting the exposed conductive area of the PCBs. This occurs as a result of the electromagnetic field, which degrades the PCBs’ performance.

    EMI issues may arise in devices that hold electric circuits. The EMI problems are caused by sources, pathways, and receptors.

    The source is the point where electromagnetic problems arise. Electromagnetic issues arise as a result of the path to the point. The electromagnetic interference operation is generated by the receptor.

    The EMI source is primarily generated internally. EMI problems have far-reaching consequences. EMI will disrupt signals, whether they are man-made or natural. It is extremely expensive, and it can even be life-threatening.

    The EMI in medical equipment, such as the ventilation system, has the potential to cause death in critical patients. Other equipment, such as navigation systems and industrial systems, may also be affected by EMI.

    What To Consider To Design PCB Traces To Prevent Electromagnetic Interference In Cavity PCB?

    There is no doubt that the EMI issues are highly infectious to the cavity PCBs. You need to consider some major facts to prevent EMIs. PCB traces are one of the essential aspects to consider before designing.

    Design The Traces With Utmost Care

    Design The Traces With Utmost Care

    Let’s check how you can design the traces to prevent the EMI issues.

    • Make sure you avoid the angles of 45 to 90 degrees during drilling the holes. The capacitance increases when you place the components between 45 to 90 degrees. This phenomenon changes the impedance results in EMI.
    • Keep the digital traces separated from the analog traces.
    • Keep the return paths of the signal shorts. More distance occurs, signal loss results in inconsistent signals. Keep the return path the same as the signal transmit paths.
    • Vias are essential for multilayers PCBs. But too many vias and their improper placement cause the mixing of inductance and capacitance. Try to keep the visa number as low as possible.

    How To Choose The Most Reliable Cavity PCB Manufacturer?

    All of the things you want are the result of excellent manufacture. You can get the greatest cavity PCBs if you work with a reputable and professional manufacturer. As a result, it is critical to choose a company that has undergone extensive testing.

    The following are characteristics of a good and dependable PCB manufacturer.

    • Vast experience in the PCB manufacturing industry.
    • Proper and sufficient required certifications.
    • High-skilled staff.
    • Product delivery deadline maintenance.
    • Bulk production ability with exact requirements.
    • Firm customer services.
    • Highly organized workplace with the latest technology.

    The above-mentioned features perfectly put a manufacturer among the best.

    What Are The Applications of Cavity PCB?

    Cavity PCBs are mostly used for communication industries. Besides this, cavity PCBs are vastly used in different sectors as follows.

    Medical Sector:

    • Scanning devices such as x-ray, MRIs, etc.
    • Health monitoring devices, heart rating checking system, blood pressure monitoring.
    • Ventilation, microscope, control system, etc.

    Heart Rate Checking Machines Use Cavity PCBs

    Heart Rate Checking Machines Use Cavity PCBs


    Industrial Uses

    • Assembly machines, power applications, measuring equipment, etc.


    • Vehicles, vehicle controlling, monitoring, navigation, auto-pilot, etc.

    Besides these, some of the other applications are:

    • Aerospace, security, defense, aeronautical, proximity devices, etc., use cavity PCBs.


    You might have got several ideas about cavity PCBs in the FAQ guide. However, the generation and making of the cavity in cavity PCBs are one of the most complex tasks in PCB design.

    PCBMay is one of the most experienced cavity PCB manufacturers in China who may help you to get the smooth drilling of cavities. We offer extensive cavity PCB manufacturing. You may contact us to get the best quote.

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