Your Leading Halogen Free PCB Manufacturer in China

PCBMay is a professional halogen-free PCB manufacturer in China for over 12 years, we could provide many different kinds of halogen-free PCBs for your project.

Customers that order from us utilize Halogen Free PCB as parts of digital devices seek eco-friendly PCBs.

These PCBs equip mobile phones, tablets, and laptops. Meanwhile, some of them are used in industrial and heavy-duty applications.

You’d like your PCB to last a long time. Your Halogen Free PCB from PCBMay is vert durable.

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PCBMay: Your Trusted High Frequency PCB Supplier in China

PCBMay is one of the leading manufacturers of High Frequency PCBs. We make high-layer count circuit boards, as well as other related electronic products.

  • Over 12 years high frequency PCB manufacturing experience
  • Full raw material of high frequency PCB in stock
  • 7/24 sales and engineering tech support
  • 100% E-test and AOI inspection
  • 24h quick turn service for your prototype PCB

It is critical that component placement be proper for clients who require Halogen Free PCB. In this page, you get to learn more about our product. As well, there’s info about the PCB’s prescribed and needed processes.

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Halogen Free PCB

Rigid-Flex Halogen Free PCB

When choosing the connector material for the Stiff-Flex Halogen Free PCB, the rigid board’s longevity is taken into account. Devices with immovable machine parts frequently employ this type of product.

flex halogen free pcb

Flexible Halogen Free PCB has several apparent advantages, one of which is its versatility. Another aspect is the removal of space-constrained connectors. Many Flex PCBs are connected to Rigid PCBs.

Prototype Halogen Free PCB

During the design process of PCB construction, a prototype Halogen Free PCB is developed. The customers can view if the design meets critical requirements after submitting the final Gerber file.

OEM Halogen Free PCB

OEM Halogen Free PCB is important if you sell your components to another company that can utilize them in consumer goods. For instance, we can serve as your bare hard drive manufacturer.

Customized Halogen Free PCB

We offer Customized Halogen Free PCB PCB Assembly and Design for discerning customers. When new digital devices are released, customers frequently desire one. Taconic is a specific material that can be utilized.

FR4 Halogen Free PCB

Because this is a flame-retardant FR4 PCB material, we have UL certification for the Halogen Free PCB. This material is extremely long-lasting. It has the ability to withstand even harsh treatment.

Halogen Free By Type (5)

  • V-Scored Halogen Free PCB

    V-Scored Halogen-Free PCBs can be mass-produced at a low cost. Following that, they were panelized using a V-cutting machine. This method almost always yields reliable boards, either normal or High Tg grade.

  • BGA Halogen Free PCB

    As professional circuit board manufacturers, we use Surface Mount Technology and BGA Chips for BGA Halogen Free PCB. These are usually High Frequency PCBs, such as those used in CPU graphics cards.

  • Power Halogen Free PCB

    Because some devices require AC to DC power conversion, a Power Halogen Free PCB is required. Microcontroller Boards are sometimes included in this item, as in the case of industrial applications.

  • HDI Halogen Free PCB

    Many devices necessitate a higher density of wiring per PCB area. That’s why HDI Halogen Free PCB should be on your essential electronic components list. These boards allow for a quicker signal flow rate.

  • Embedded Halogen Free PCB

    Embedded PCBs help in the production of devices that demand high-resolution work, and the Embedded Halogen Free PCB allows you to maximize your area. The technique is carried out using Surface Mounting Technology.

Halogen Free PCB By Layers (5)

  • Single-Sided Halogen Free PCB

    The majority of Single-Sided Halogen Free PCB orders come from OEM PCB orders. The copper layer put on extends the life of the device, but Single-sided PCBs are not suitable for mmWave applications.

  • Double-Sided Halogen Free PCB

    Double-Sided Halogen Free PCB is a more expensive option, but it’s sometimes necessary for medium-range devices. Some of these are medical devices.

  • Multilayer Halogen Free PCB

    The excellent Multilayer Halogen Free PCB we make pays special attention to the preparation of plated-through-hole (PTH) components. Drilling and laminating are considered properly to ensure that product is durable.

  • 10 Layer Halogen Free PCB

    10 Layer Halogen Free PCB is a popular product since it can support many interconnects. This board’s design can be customized to take use of the board’s durable e-glass material.

  • 16 Layer Halogen Free PCB

    These are Microwave and RF applications using a 16 Layer Halogen Free PCB. High-frequency laminates, for example, can be employed in this case. Customers may additionally specify a high level of thermal conductivity.

Halogen Free PCB By Surface Finish (5)

Halogen Free PCB Advantages

Fast Delivery Time
Fast Delivery Time
PCBMay can offer 24H or 48H quick-turn delivery time for your prototypes, we use the forwarders such as DHL, FedEx, UPS, TNT, etc, which can meet your requirement.
Professional Team Work
Professional Team Work
PCBMay has one professional team from engineering, production, sales, and service support, who can support you in 7*24h, so just send your Gerber file & BOM list to us.
Cost Down
Cost Down
PCBMay can help you to put the cost down if you choose our service because PCBMay has one advanced auto production line, and there's not much labor cost.
Quality Control
Quality Control
PCBMay follows the IPC Class 2 or Class 3 quality control. There're IQC, IPQC, QPC, FQC, OQC, and provide high-quality products for customers.

PCBMay Halogen Free PCB Properties

We can meet any Halogen-Free board criteria you specify thanks to our PCB manufacturing capabilities. Below are some of the specifications that are currently available.

Base Material: Fiberglass Epoxy Resin + Polyimide Resin

Minimum Panel Thickness: 0.4mm

Minimum Dieletric Layer: 2mil thick

Minimum Line Width: 2.5mil

For HDI: 1+N+1, 2+N+2, 3+N+3

PCB Aspect ratio: 1:1 (Laser) / 20:1 (manual)

PCBMay Halogen Free PCB Properties
PCBMay Halogen Free PCB Production

PCBMay Halogen Free PCB Production

We create all types of Halogen Free PCB with our comprehensive manufacturing skills, including Filled Via, VIPPO, Pressfit, and Microvia PCB assembly.

For this advanced sort of PCB, we at PCBMay understand the importance of product design. Our in-house professional engineers will receive your PCB schematic and drawings, assess the data, and provide you with whatever assistance you require.

Any Engineering (EQ) questions about your Halogen Free PCB will be promptly answered because we value your opinion. Give us 1-2 hours.

For further information, please contact us.

Professional Halogen Free PCB Manufacturer

We’ve got everything it takes to make the Halogen-Free PCB you’re looking for. We have refined the fabrication of this type of board as a veteran in China’s PCB sector.

Our facilities are improved as a comprehensive PCB fabricator and PCBA specialist. In this little film, we present them to you. Here you can see how well-organized and tidy our process for creating your Halogen-Free PCB is.

When we deliver one to your location, you can safely assume that it will be of excellent quality.

Professional Halogen Free PCB Manufacturer

Why Choose PCBMay for Your Halogen Free PCB

Why Choose PCBMay for Your Halogen Free PCB
Why Choose PCBMay for Your Halogen Free PCB 2

In our workshop, we have over 500 people working on rigid and flexible PCBs, all of which are halogen-free.
There is no minimum order quantity for your new order, so don’t be concerned.
Your prototype Halogen Free PCB may be turned around in 24 hours, with sales and engineering tech support available 7 days a week.

From single-sided to multilayer PCB, PCBMay can help you to produce different types of halogen-free PCBs.

Don’t hesitate to send the inquiry to us now.

Halogen Free PCB Fabrication

High Frequency PCB Manufacture

We ensure that all items are subjected to stringent quality control to ensure that acceptable impedance is maintained.

We can achieve a perfect signal-to-noise ratio with high-performance PCBs. This is also true for Halogen-Free PCB.

You can certainly request sophisticated dielectric materials if you so choose (Rogers, Ventec, NanYa, among others)

With our company backing you, your halogen-free PCB is made suitable for gadgets and designs that require higher amperage.

High Frequency PCB Production Equipment

We have developed expertise in our PCB manufacturing process after more than 12 years in the competitive circuit board market.

Make use of our resources to help you create your brand. For your Halogen-Free PCB, we welcome all forms of Custom PCB.

As asked, we create Prototype PCBs. We make certain that Function Testing is adequate.

We also do extensive temperature and humidity testing, as well as electrical testing, SMT, PTH, and Wave Soldering.

OEM & ODM Halogen Free PCB Applications

Halogen Free PCB for Wireless Application

Halogen-free PCBs can be customized for wireless applications, allowing for a precise reaction to a convenient internet connection. Some machines can be outfitted with IoT, Smart Devices, or Sensor Devices.

Halogen Free PCB for High Speed Applications

Halogen-free PCB achieves the requisite speed for High Speed PCB, which is presently required in fiber optic internet. Through correct PCB stack-up, our board maximizes interconnections.

Halogen Free PCB for Automotive Applications

To avoid hazardous gas that is harmful to humans, you’ll need a PCB that is suitable for automotive use. Because people drive cars on a daily basis, halogen contamination must be avoided.

Halogen Free PCB for Commercial Applications

Halogen-free PCB is chosen for commercial applications for a variety of reasons. The first thing that comes to mind is safety standards, which are in place for the benefit of those who operate in the workplace.

Halogen Free PCB for Satellite Applications

Better insulation is required for satellite specific products. They also require high-power performance. As a result, Halogen-Free PCB for Satellite Applications is very popular.

Halogen Free PCB Production Details As Following Up

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-free OSPENEPIGSoft 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-free HASL 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.

    • “In terms of price, they outperform their competitors. Because it’s simple and easy to order, this is one of the top PCB component providers. When the product is installed, it is effective, which means it avoids defective output. I also do not need to worry about shortage. If no prepreg I want is on hand, they advise ahead of time. Then it’s simple to come up with alternatives. They also have a range of appropriate FR4 options.”

      Hans Adamiet, Senior Hardware Engineer from Schleswig-Holstein, Germany
    • “This is one of the top online PCB shops. People can readily purchase PCB-related items such as PCB heaters and components. There is no minimum order, and they ship to my city, which is unusual for me. They are very professional in dealing with customers and provide excellent service while maintaining a pleasant attitude. I am completely satisfied. It’s well-known and trustworthy enough for me.”

      George Orban, PCB Inspector from Romania
    • “Because of their website’s delivery time guarantee, I decided to give this Chinese company a shot. The package was delivered on the dates they specified. The customer service was excellent. The organization must continue to provide excellent delivery service in order to attract new clients. Without a doubt, this is a reliable company for PCB, what I will now call, an excellent source for electronics. They deliver better results I than predicted.”

      Herbert Y. Scanford, Materials Director from USA

    Why Choose PCBMay for Your Halogen Free PCB

    As a reliable halogen free PCB manufacturer in China, PCBMay could offer you the turnkey solution from layout to manufacturing. Our excellent engineering team will supply you with professional panel drawings and professional design suggestions.

    If your product is engaged in requiring to be environment friendly, halogen free PCB from PCBMay is your best choice.

    Halogen Free PCB

    Halogen Free PCB

    As an ISO-certified factory, we provide high-quality halogen free PCB for you. Even there is a quality complaint, we will remake a new batch immediately to take place of it, meanwhile, we will provide an 8D report to you and you will know the rooted cause.

    Please send your quote to us right now, we will offer the quotation immediately.

    Halogen Free PCB Background

    Halogen free PCB substrates have been commercialized since 1998, the first in the world.

    A halogen-free board is a printed board that does not use halogen elements.

    By using a halogen material for the printed circuit board, it is possible to obtain characteristics such as flame retardancy and low warp resistance and therefore manufacturing is facilitated.

    Why PCB Manufacturers Avoid Halogen in PCB Manufacturing?

    However, a substrate using a halogen element produces dioxin when burned.

    For this reason,halogen-free has long been called for, but due to the difficulty of manufacturing, many manufacturers have not fully adopted it, especially for products with high component mounting density.

    For a long time, brominated flame retardants have been used in the manufacture of printed circuit boards.

    Although Halogen free PCB suppliers have developed some halogen-free alternatives.

    The impact of these alternatives on the assembly process is still uncertain.

    Since the introduction of halogen-free, although halogen-free materials have occupied 10% of the laminate market.

    The industry still lacks the production experience to define the assembly process and reliability window.

    Halogen Free PCB

    Halogen Free PCB

    What is Halogen-Free PCB?

    For halogen free PCB, we will have a brief Introduction and introduce some basic concepts.

    If you have heard of the term “halogen-free PCB” and want to learn more, you have come to the right place. We share the story behind this printed circuit board.

    Find out the facts about halogens in PCBs, halogens in general, and the requirements for the term “halogen-free “. We also studied the advantages of halogen-free.

    In order to meet the requirements of halogen-free PCB, the content of halogen contained in the circuit board must not exceed a certain amount, and its content is in parts per million (ppm).

    What Are Halogens in PCBs?

    Halogens have many uses in relation to PCBs.

    Chlorine is used as a flame retardant or protective coating for polyvinyl chloride (PVC) wires.

    It is also used as a solvent for semiconductor development or cleaning computer chips.

    Bromine can be used as a flame retardant to protect electrical components or sterilize components.

    What Level is Considered Halogen-free?

    The International Electrochemical Commission ( IEC ) has set the standard to a total halogen content of 1,500 ppm by restricting the use of halogens. The limits for chlorine and bromine are both 900 ppm.

    If you comply with the Restriction of Hazardous Substances ( RoHS ), the ppm limit is the same.

    Please note that there are various halogen standards on the market.

    Since halogen-free production is not a legal requirement, the allowable levels set by independent entities (such as manufacturers) may vary.

    Can You Explain Halogen-Free PCB Board Design?

    At this point, we should note that it is difficult to find a real halogen-free PCB.

    There may be a small amount of halogen on the circuit board, and these compounds may be hidden in unexpected places.

    Let us elaborate on some examples. Unless the green substrate is removed from the solder mask, the green circuit board is not halogen-free.

    The epoxy resin that helps protect the PCB may contain chlorine. Halogens may also be hidden in ingredients such as glass glue, wetting and curing agents, and resin accelerators.

    You should also be aware of the potential pitfalls of using halogen-free materials.

    Halogen Free PCB

    Halogen-Free PCB

    For example, in the absence of halogen, the ratio of solder to flux will be affected, resulting in scratches.

    Keep in mind that such problems do not necessarily have to be overcome.

    A simple way to avoid scratches is to use solder resist (also called solder resist) to define the pad.

    It is very important to cooperate with famous PCB manufacturers to ensure the transparency of the halogen content in the PCB.

    Although they are recognized, not every manufacturer currently has the ability to produce these circuit boards.

    Nonetheless, now that you know the location of halogens and their purpose, you can specify the requirements.

    You may need to work closely with the manufacturer to determine the best way to avoid unnecessary halogens.

    Although obtaining a 100 % halogen-free PCB may be a challenge, you can still manufacture PCBs with acceptable levels in accordance with IEC and RoHS regulations.

    Why Create a Halogen Free PCB?

    Although halogens play a vital role in the structure of PCBs, they have a disadvantage that is hard to ignore: toxicity. Yes, these substances are functional flame retardants and bactericides, but their cost is high.

    Chlorine and bromine are the culprits here. Exposure to any of these chemicals may cause uncomfortable symptoms such as nausea, coughing, skin irritation, and blurred vision.

    Hazardous exposure is unlikely to occur when handling halogen-containing PCBs.

    Nevertheless, if the PCB catches fire and emits smoke, you can expect these adverse side effects.

    If chlorine-containing ingredients happen to be mixed with hydrocarbons, it will produce dioxins, a deadly carcinogen.

    Unfortunately, due to the limited resources that can safely recycle PCBs, some countries tend to conduct poor disposal.

    Halogen Free PCB

    Halogen-Free PCB

    Therefore, improper handling of PCBs with high chlorine content is dangerous to the ecosystem.

    Burning these gadgets to eliminate them (which does happen) may release dioxins into the environment.

    Why Are Halogen-Free Base Materials the Better Solution When the PCB Requirements are High?

    The European history of halogen-free materials is a long and not always successful one.

    The first attempts to separate from the TBBPA as a flame retardant were made in the early 1990s.

    According to IEC 61249-2-21: Definition of “halogen-free” the following applies:

    • Maximum 900 ppm chlorine
    • Maximum 900 ppm bromine
    • Total maximum 1500 ppm halogen

    This means that halogen-free materials mainly use phosphorus, nitrogen, and ATH as halogen-free flame retardants.

    Today, modern base materials are classified according to the following UL classification, which also expresses the fact that the base material is different in the standardization.

    FR 4.0 – filled and unfilled epoxy resin systems Tg 135 – 200 TBBPA.

    FR 4.1 – filled and unfilled epoxy resin systems Tg 135 – 200 halogen-free

    A new additional classification has been made for two years:

    FR 15.0 – filled epoxy resin systems TBBPA RTI 150 ° C

    FR 15.1 – filled epoxy resin systems halogen-free RTI 150 ° C

    The replacement of the flame retardant TBBPA with halogen-free flame retardants is associated with other chemical properties of the resin systems.

    The bonding energy of the resin system increases significantly and serves as the basis for the improved thermal properties of halogen-free materials.

    This increased binding energy also improves the problem of adhesion to the glass fabric, which in turn has a positive effect on CAF performance.

    In the lecture, various examples of the improved properties such as heat stability and CAF behavior in small HW-HW will be shown, which have been proven in practice.

    Alternative “Green” Printed Circuit Boards: Halogen-free, Flame-retardant Printed Circuit Boards

    Almost 77% of the printed circuit boards manufactured in Europe contain substances that, if burned, lead to substances that are hazardous to health.

    Manufacturing processes with polysiloxane are ecologically acceptable solutions because they do not emit any dangerous substances and they hardly pollute the environment.

    So far, only three halogen-free, flame-retardant printed circuit boards have been economically implemented by manufacturers, but they require flame retardants containing phosphorus and nitrogen in order to meet the UL regulations on fire protection.

    Of these, in turn, only one material is available on the market, the high price preventing widespread use.

    As an environmentally friendly, but also very expensive, halogen-free material that, following the current trend in the development of electronic products, also meets even higher technical requirements, the only alternative is ceramics.

    The concepts presented here based on the organic material polysiloxane can be understood as an ecologically advantageous, technological link between FR4 and ceramics.

    Polysiloxane as the Base Material

    Polysiloxane is used as an ecologically and economically optimized alternative to thermosetting circuit board material, which can be used in the form of foils or plates as a non-hazardous carrier material for electronic assemblies.

    Polysiloxane belongs to the group of silicones with the filler aluminum oxide.

    This thermally conductive and temperature-stable material is combined in sandwich construction with a metallic carrier material, whereby inexpensive, miniaturized assemblies, especially in the power range, can be produced.

    With a suitable construction principle, such as stabilizing the flexible printed circuit boards with expanded polypropylene (EPAC principle), mechanically extremely robust structures result. The metal also serves as a cooling plate.

    What is the Role of Passive Components in Halogen-Free PCB?

    In combination with printing technology, additional multi-layers and components such as capacitors, coils, and resistors can be implemented cost-effectively.

    The basic concept can be shown in a study on ecologically optimized television electronics.

    The entire television chassis was applied to pollutant-free, thermally conductive, automatically processable (roll to roll), and problem-free recyclable siloxane film.

    The passive components were integrated by means of polymer paste printing, saving resources and costs.

    In the prototype realized here, 120 components were printed in this way. For this, however, a paste or adhesive system first had to be specified.

    Production Technical Advantages

    An advantage of using flexible materials, in contrast to other concepts such as the use of injection-molded circuit carriers, is that they do not entail an exit from known manufacturing structures. This is reflected in the costs, especially for high-volume products, and thus simplifies switching or use. Among other things, multi-layer circuits could also be produced inexpensively with the help of conductive paste printing. The overall benefits can be summarized as follows:

    • Roll-to-roll production is possible
    • High level of automation in production
    • Favorable thermal properties
    • Integration of components in the carrier
    • Inexpensive materials and manufacturing technology
    • Good EMC properties
    • Reduced variety of materials
    • Saving of component assembly
    • Material savings (volume and weight)
    • Low-polluting materials

    Further Research on Halogen-free, Flame-retardant Circuit Boards Based on Siloxane for Future Electronic Products

    Although products have already been realized with the current state of development of this technology, additional research work is required for cost-optimized large-scale production.

    Further investments are made with the help of public funding and in cooperation with well-known companies for various investigations.

    Examples include laser processing and micro-structuring, local stiffening, and the recently approved joint project “Halogen-free, flame-retardant circuit boards based on siloxane for future electronic products”, which deals with the development and manufacture of rigid printed circuit boards from the same material as the existing foils.

    Halogen-free Material not only for Large Projects

    In construction projects such as public buildings, airports, hospitals, kindergartens, exhibition halls, stadiums, town halls, to name just a few examples, where extensive PCB equipment are laid on cable racks in ceiling cavities or in cable ducts, halogen-free materials are now required.

    The use of halogen-free PCB is usually stipulated in the specifications in the tender.

    The release of toxic gases would also have fatal consequences on ships, airplanes, and trains, which is why halogen-free materials are mandatory here.

    In fact, wherever people are, materials should contain the least possible risk in the event of a fire.

    These are offices, medical practices, retail stores, and, last but not least, private apartments. The existing electrical installations do not represent the greatest potential risk in the event of a fire, because they are usually concealed.

    What Is the Halogen PCB vs Halogen Free PCB Price Factor?

    The price is higher than ordinary halogen-containing PCB circuit boards.

    The cost difference is only considered from an economic point of view.

    However, manufacturers of SMT patches are still facing a more critical challenge: PCB drilling is greatly affected by the physical properties of the material, while the hardness of halogen-free materials is usually higher.

    Similarly, it is estimated that the life of the drill bit will therefore be reduced by about 25%.

    This is by no means insignificant because, for this reason, it is possible that halogen-free PCBs will cost higher manufacturing costs.

    When selling to an assembly plant, this cost will be reflected in the selling price of the product.

    Most Common Compounds Used in PCB

    This section lists some of the chemical compounds commonly used in PCB manufacturing and how they affect human life.

    Copper chloride: This chemical is used as an etching solution in PCBs.When a person rubs his eyes after touching it, copper chloride can cause severe eye irritation.

    Zinc chloride: Zinc chloride is used as a flux in printed circuit boards. This chemical can cause eye problems, breathing problems, and may affect the heart and lungs. If a person inhales zinc chloride, it may cause pulmonary edema and severe stomach problems.

    Cobalt sulfamate: Cobalt sulfamate is used for electrolytic plating of PCBs.This plating agent can cause skin and eye irritation.

    Bromine: Bromine is used as a flame retardant for PCBs.High levels of bromine can cause skin irritation, burns, dizziness, and headaches.

    Chlorine: Various chlorine-based materials are used in PCB manufacturing. Regular exposure to this chemical can cause tearing, nausea, headache, skin irritation, burns, and dizziness. Furthermore, the handling of bromine, chlorine, or halogen PCBs becomes difficult because they generate toxic fumes when burned.

     Lead: Lead is used as a flux in PCBs. Tin-lead is used to prevent oxidation in copper circuits. Lead produces toxic fumes during the soldering process and can cause breathing problems and other serious health problems.

    Why Is Halogen Free PCB a Necessity?

    In the printed circuit board (PCB) industry, the wind of Halogen-free PCB is blowing hard. Halogen compounds such as bromine have been widely used in PCB raw and subsidiary materials.

    But they are losing their place due to strengthening regulations on the use of harmful substances in electronic products in advanced countries such as Europe and the United States.

    The PCB industry is also moving in step with the declaration of ‘free halogen’ in order to prevent factors that could be regulated by electronics and mobile phone manufacturers.

    Starting with mobile phones with a simple manufacturing process, ‘halogen-free’ is now recognized as a necessity rather than an option in other products.

    Every year, the electronics industry demands that increasingly small and dense printed circuit boards (PCBs) in electronic and microelectronic components (miniaturization) operate in more aggressive and harsh environments.

    You will see the big deal with halogen-free as below video:

    What Are the Most Common Applications of Halogen Free PCB?

    In recent years, the shift to halogen-free materials (materials that do not contain halogen) has been promoted due to increasing awareness of environmental issues.

    The halogen of the material can be measured by resistance heating type quartz tube combustion- ion chromatography method.

    As an example, you can take out the electronic board mounted on a mobile phone, a personal computer (new model), or a personal computer (old model) and check if it has a Halogen free PCB.

    • Application examples
    • CFRP contained halogen analysis
    • Resin/ceramics contained halogen analysis
    • Solder material contained halogen analysis
    • RPF contained halogen analysis

    Related standards

    ◆ Japan Electronic Circuits Association (JPCA): JPCA-ES0206, JPCA-HCL21

    ◆ International Electrotechnical Commission (IEC): IEC61249-2-21

    ◆ American Electronic Circuits Association (IPC): IPC4101B

    In recent years, customers’ requests for eco-friendly products have been increasing. In Europe, the RoHS directive has been enforced Europe, and there is an urgent need for PCB manufacturers to respond to the environment.

    What Are the Benefits of Using Halogen Free PCB?

    Now that you know the facts, why use halogen-free PCB?

    The main advantage is that they are less toxic alternatives to halogen-filled alternatives.

    Prioritize the safety of you, your technicians, and those who will handle the circuit board, enough to consider using a circuit board.

    In addition, the environmental risk is much lower compared to equipment containing a large amount of such hazardous chemicals.

    Especially in areas where the best PCB recycling practices are not available, lower halogen content ensures safer disposal.

    In the booming technological era, consumers are becoming more aware of the toxins in their products, and their applications are almost limitless -ideally, the automotive electronics, mobile phones, and other devices that we maintain close contact with should be halogen-free.

    However, reduced toxicity is not the only advantage: they also have performance advantages.

    These PCBs can usually withstand high temperatures and are therefore very suitable for lead-free circuits. Since lead is another compound that most industries try to avoid, you can kill two birds with one stone.

    Final Words of Halogen Free PCB

    Halogen-free PCB insulation materials may be low-cost and effective for disposable electronic products.

    Finally, because of the low dielectric constant delivered by these circuit boards, it is easier to maintain signal integrity.

    All of us should strive to raise awareness to limit avoidable hazards in important equipment such as PCBs.

    Although the law has not yet stipulated halogen-free PCBs, it represents that relevant organizations are working to phase out the use of these harmful compounds.

    Halogen-Free PCB Conclusion

    With the planned launch of the 5th generation mobile communication system “5G” in the future, it is expected that data communication will have even higher capacity and higher speed.

    Under such circumstances, the multi-layer circuit board materials that play a central role in servers and routers that support the backbone systems of communication networks are required to have Halogen-free PCB materials.

    It is from the perspective of the environment in addition to large capacity and high-speed transmission.

    Professional Halogen free PCB manufacturers have commercialized a substrate material for communication infrastructure equipment that is halogen-free.

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