Your Trusted FR4 PCB Manufacturer Since 2008

PCBMay- Your Premier FR4 PCB Manufacturer in China

PCBMay acknowledges as a leading and prominent manufacturer of all-purpose PCB in China. We reached the highest level of PCB prototyping and mass production since 2008. All of our PCB products are consistently distributed to 60+ countries worldwide.

PCBMay consists of 500+ employees who have experienced PCB manufacturing for almost 20+ years. Their persistent pursuit of excellence and high commitment responsibilities make it possible to manage tons of FR4 PCB products for all our customers.  

Our PCB categorizes with several selections. It varies from different sizes, colors, designs, configurations, thickness, and other features depending on your proposed necessity. Aside from FR4 PCB, PCBMay also involves layout, research, and planning several types of PCB prototyping that widely help your installation projects and business.

To maintain our credibility, we ensure that we approve the ISO9001:2008, RoHS, REACH, ISO9001:2015, UL (E477880), and ISO14001:2015 international certificate approval. We only use those trusted raw materials that give the advantage to retain the excellent quality position of our product.

FR4 PCB is a wide-ranging PCB component that perfectly fits in a specific field. It can work on operating your applications and valuable devices simultaneously. Also, it provides the finest interference that supports your good signal integrity. 

You can use FR4 PCB as one element for your electrical, automotive, aerospace, mechanical, residential, industrial, commercial, networking system, automobiles, and other device installation. 

Our FR4 PCB undergoes further product testing for the confirmation of its outcome. After the verification, distributing to all extensive market branches is next in the transaction list. And for your orders, no need to worry; we can even cater to even a bulk of your orders. We have a fast delivery system to send you your place orders.

If you are with PCBMay, you do not need to seek any manufacturing foundation that can barely help you with your FR4 PCB problem. Quick-turn product solutions, PCBMay imparts. Good humanity services, PCBMay offers. Cost-effective FR4 PCB, PCBMay provides. So you do not feel any doubt if you ever partner with us. It’s our greatest pleasure to be chosen as part of your succeeding PCB prototyping business. 

PCBMay is 24/7 accessible whenever you need some assistance. Email us now!

FR4 PCB: The Ultimate FAQ Guide

Are you looking for a legit source of information on FR4 PCB?

If you are someone interested in answers regarding the bulk import, production, or sourcing of FR4 PCB from China, you are at the right place.

Let’s get started with this ultimate FR4 PCB FAQs guide.

What Is FR4 PCB?

FR4 is commonly known as a material grade that serves for the fabrication of various circuit boards to be used in electronics.

The PCB structures having either a single-sided structure or some with double-sided structures are made up from FR4 Core with a combination of copper layers.

FR4 PCB

It is a flame retardant material having woven glass-reinforced epoxy resin as the mixture to resist the heat in circuit boards.

The core has a substrate of a copper covering called a copper-clad laminate, and the multi-layer boards for the circuit have the properties of FR4 additionally.

Different manufacturers can deliver FR4 with various properties, and each of them can be quite different from the other one.

You can find the FR4 PCB from the best manufacturer in China that is PCB may, which offers these materials at very reasonable pricing.

This material has great strength, and is mainly water-resistant, and acts best as an insulator in most situations where there are electrical components.

The FR4 PCB is useful as an isolated that works adjacent to the copper planes with good strength for the entire structure.

What Are The Advantages Of FR4 PCB?

Having an FR4 PCB can give you various advantages based on its properties.

• The FR4 has a good strength-to-weight ratio.
• This is a lightweight material.
• It is a very good resistor to the moisture having pretty good resistance to the outside temperatures.
• It is a cheap and very low-cost material that makes it pretty much advantageous for various purposes.
• This material has some great electric loss properties.
• With good dielectric strength, it contributes very well with its electrical insulation properties.
• It is also a water-resistant material that makes it usable for various applications for marines.

Is FR4 The Best Board Material For Your Design?

FR4 can be a pretty good material for a board to forge a design due to its parameters being very much comparable.

There is good bending strength in this material, and it provides pretty good structural integrity with 2.0 N/mm copper adhesiveness.

FR4 PCB

When you compare FR4 PCB with other materials, it has low Tg, which implies that the component can break down or deform when the excessive temperature is met.

FR4 constructed boards are pretty strong, and the design you want to produce is also good as a result of some water-resistant properties.

It is best to board material due to its good insulation properties that are formed between copper layers to support signals and minimize any kind of interference.

In open environments, the FR4 PCB may not be the best suitable material where there are high frequencies.

How To Choose The Right FR4 PCB supplier?

The right FR4 PCB supplier in China is PCBMay.

This company is offering the top quality FR4 having pretty good characteristics.

The FR4 grade material obtained from this company is made as a composite material.

This is made up of woven fiberglass cloth having epoxy resin binder to make it a good resistor to the flame and burning.

The FR4 material complies with the standard UL94V-0, which makes FR4 glass epoxy popular and versatile thermoset plastic laminate grade having good strength.

PCBMay supply the right FR4 with good strength-to-weight ratios having almost zero water absorption.

The FR4 obtained from this supplier act best as electrical insulators that possess considerable mechanical strength.

The material used in FR4 PCB helps to retain its high mechanical values in any kind of weather conditions along with electrical insulating qualities.

These properties obtained from the best manufacturer’s FR4 make it suitable to be used for mechanical and electrical applications under any weather conditions.

Can I Get A Discount On the Bulk Order Of FR4 PCB From China?

You can easily get discounts by ordering FR4 PCB in bulk from China.

FR4 PCB

PCBMay is the best supplier of FR4 in entire China, and it is offering many discounts for the customers for bulk orders.

You can get these discount orders with delivery across different countries.

What Is The Quality Of FR4 PCB From China?

The quality of FR4 PCB is the highest, coming out from China from the best manufacturers.

PCBMay is one of the best manufacturers in China that is offering the highest quality FR4 across China to different customers.

You can get your hands on the best quality of FR4 manufactured by PCB may at very reasonable prices.

How Much Time It Will Take To Deliver A Batch Of FR4 PCB From China By Sea?

Generally, delivery time for a batch of FR4 PCB would take about 15 to 20 days of delivery from China by the sea.

A batch of FR4 PCB

This time can vary due to weather conditions or the laws of different countries.

On average, the most time taken will be about 20 days for the delivery from China across the sea to your desired location.

What Are FR4 PCB Material Properties?

There are the following properties of FR4 PCB high-grade material.

• FR4 glass epoxy is a material with high-pressure thermoset plastic laminate grade.
• This material has great strength to weight ratios.
• The FR4 PCB also has zero water absorption, for which it is suitable to act as an electrical insulator that has considerable mechanical strength.
• It has dry and humid weather retaining properties with its high mechanical values and electrical insulating qualities.
• The fabrication cast from this material is always good, and the utility of this grade is to a wide extent in mechanical as well as in electrical applications.
• It is mostly yellow to green with its color that makes it versatile to go with any kind of use.
• The material of FR4 PCB is low-cost.
• It has high dielectric strength property that acts well as an electrical insulator as well as electric loss properties.

What Are The Factors To Consider While Choosing The Thickness Of FR4 PCB Material?

Following are some factors that you should consider when you are choosing the thickness of FR4 PCB material.

The thickness of FR4 PCB

Compatibility:

It is an important factor for FR4 to consider as FR4 can be used to create different circuits, and the thickness of FR4 PCB can have a greater effect on the components that are being used.

Components like THT would require a thin PCB instead of a thick one to avoid any consequences.

Design and flexibility:

The design of most circuit boards is preferred as thick by most manufacturers.

It is because thin boards are most likely to get damaged quickly, or they are always at a risk of breaking.

The thick design provides more flexibility to the board that is to be used in electronics for the control unit.

A thin PCB may guarantee to reduce stress, but they are most vulnerable to heat.

A thick board made with FR4 PCB material is good with bending angles and resisting heat.

The compatibility can also be affected by the thickness of a board along with its components, as many of the components are working at a small range of board thickness.

Weight:

Considering the thickness of an FR4 PCB material board, the weight is greatly affected.

Weight is a great consideration in electronics when the stock is to be sold into the open market to various customers.

Using a lighter PCB would mean a thin board and lighter product that may be immune to any harm or breakage.

Such products are pretty cheap, and they are easier to ship across different locations.

Impedance control:

FR4 helps to facilitate impedance control with board thickness in the dielectric environment.

Impedance is really important to consider when it comes to the use of thick boards that making them critical options to be kept in mind.

The thickness of the board is important for impedance as every multi-layered board can act with adjacent layers as capacitors.

This thickness determines the dielectric thickness of the FR4 PCB that can turn as an effect on the capacitance value.

The boards with high-frequency designs require to maintain optimal board functions by focusing on impedance matching, for which it is crucial to get the right capacitance for each layer.

Connections:

The FR4 PCB thickness also varies with the type of connectors that are used for printed circuits.

An edge connector is used for a two-sided PCB design in order to join both of the sides.

PCB edge connectors only fit a particular set which can be a major limiting factor for the final size of PCB thickness.

The connecting part of the connector is useful which should be fitted on one side of a PCB; otherwise, it will cause damage to it which is why thickness is important to consider.

What Are The Different Types Of FR4 PCB Material Available From Chinese Suppliers?

PCBMay is the best Chinese supplier for FR4 PCB material, and the different types of material that the company is providing to the customers are.

FR4 PCB

Standard FR4

• FR4 SHENG YI family S1000H has a thickness level of 0.2 to 3.2 mm.
• FR4 VANTEC family VT 481 has a thickness level of 0.2 to 3.2 mm.

FR4 High TG

• FR4 SHENG YI family S1000-2 has a thickness level of 0.6 to 3.2 mm.
• FR4 VANTEC family VT 47 has a thickness level of 0.6 to 3.2 mm.

FR4 High IRC

• FR4 SHENG YI family S1600 has a standard thickness level of thickness 1.6 mm.
• FR4 VANTEC family VT 42C has a standard thickness level of 1.6 mm.

FR4 with no copper

• For the use of insulation plates, board supports, and templates, FR4 without copper is used because it is epoxy glass.
• The thickness level of this FR4 is 3 to 5 mm.

What Is The FR4 PCB Connection?

FR4 is the insulating backbone within a PCB that holds the connection.

Different manufacturing companies build a different type of base for the circuits upon which this base is followed.

FR4 PCB Connection

A layer of copper foil is laminated on the FR4 once it is prepared with the use of adhesives and heat to fit well.

The copper plays an important role in FR4 PCB to cover both of the sides or either one side, which mainly depends on the design of aboard.

There are more than one-sided layers of copper used in complex PCBs for the circuit boards that make a sophisticated circuit for bigger advantage and use.

Before a solder mask layer is applied, the circuits are drawn, and the preparation of the board gets started for its final layer for the process of soldering.

This makes it ideal to use FR4 PCB as the default substrate for manufacturing quality PCB products and running the PCB manufacturing processes.

When To Use FR4 PCB?

The FR4 PCB materials are best used in the circuit boards as a logical default choice of electrical engineering.

FR4 PCB

Most of the electronic appliances use the epoxy-based FR4 board due to their reliability and strength along with the low-cost manufacturing benefit.

You should keep in mind that FR4 PCB is not ideal for all types of situations, especially when there are high-frequency designs.

You should acknowledge these features when you are trying to decide to build an FR4 PCB.

Cost Reduction Manufacturing:

Cost is also important in production when you want to use FR4 material that is a very common type of PCB base.

The cost-concerned designers and manufacturers are always focusing on finding out the best suitable ways to reduce cost where FR4 comes as the best option.

FR4 is better and more suitable than high-frequency laminates due to its cost, which is why most companies use this material in all types of manufacturing processes.

Impedance Stability:

Stable impedance is an important factor in most of the designs, and it gives a predictable performance for big circuits.

It is important that FR4 material with a high-frequency design should be used for reliable performance to offer good results.

The material should be able to maintain a stable Dk from which the stable impedance could handle things pretty well.

As the temperature of the FR4 material changes, the entire dielectric constant or Dk should be maintained across the entire material.

Temperature Management:

When choosing when to use FR4 PCB, the temperature is another important consideration for the performance.

This factor helps you choose a PCB base to provide a stable flow along with thermal coefficient and dielectric constant, which takes place in the circuit board.

A decent gauge is provided for which it becomes easier in a situation where you want a manageable temperature by using an FR4 PCB.

The gauge helps to measure the change of dielectric constant with the change in temperature.

Operational Environment:

The operational environment can also be suitable for an FR4 PCB as this would mainly base on the environmental conditions.

Under normal weather conditions, it is suitable to use FR4 PCB material which will allow decent working under temperature and moisturizing conditions but not for extreme conditions.

Under such conditions, the operational environment won’t have many effects on the processing, and the circuit board can do its task easily.

Using an FR4 PCB from the best supplier in China, which is PCB, may help you get the maximum benefit in such a situation to fit any purpose along with reliability and quality.

When To Avoid FR4 PCB?

You should know that FR4 PCB may be cheap to build and very versatile to be used in different situations, but there are still some conditions where you should avoid FR4 PCB.

The Feature of FR4 PCB

Temperature Resistance:

Under high temperatures and conditions where temperature gradually gets too high, it is not recommended to use an FR4 material.

Your PCB needs to stay in average temperature conditions; otherwise, you should avoid FR4 material for all types of high-temperature environments.

As an example, you can use FR4 material in extreme engineering like aerospace applications.

Lead-free soldering:

The FR4 material cannot withstand any low-temperature resistance and reflowing of temperatures with their peak value.

For RoHS-compliant PCB, it is better to avoid FR4 material and use lead-free soldering must be used.

This is because the temperature may rise up to 250 degrees Celsius, and it won’t be suitable for FR4 material to stand against it.

High-Frequency Signals:

It is better to avoid FR4 material where there are high-frequency signals as they cant maintain a steady impedance under such conditions.

This can cause fluctuations and also affect the integrity of the circuit’s signals as well which is why it’s better to use a high-frequency laminate for this purpose instead.

What Is The Classification Of FR4 PCB?

There is a various number of copper traces found in FR4 PCB for which FR4 printed circuit boards can be divided into various classifications.

Classification of FR4 PCB

According to the standards, there’re only three basic types of classifications of FR4 PCB: Single, Double, and Multi-layers.

Single

• Single-Sided / Single layer.

Double

• Double-Sided / Double layer, 2Layers, 2L.

Multi-layers

• Four Layers.
• Six Layers.
• Eight Layers.
• Ten Layers.
• Board with more than 10L.

All the boards that have more than four layers are referred to as “Multi-layer PCB.”

Considering a board with the development of its manufacturer’s technology, a hole having a diameter size can be divided into the following two types.

• Normal through hole (this hole has diameter >=0.20mm (8mil))
• HDI (this hole has a diameter <=0.15mm (6mil))

In case we divide the classification based upon its copper thickness, it can be divided into

• A normal copper: having a thickness of copper: 0.5 OZ, 1.0 OZ, 2.0 OZ.
• A heavy copper: having a thickness of copper: >= 3 OZ.

Based on the core material use, the category is also divided into the following two types.

• Rigid FR4 PCB: that is rigid for the whole board.
• Rigid-flex circuits: that are rigid FR4 along with flexible circuits.

Considering the Tg value of an FR4 board, it can be divided into 2 categories.

• Normal Tg having a value of 130, 135, 140.
• High Tg having a value of 170, 180.

Why Is The Fire-Resistant FR Rating Needed?

The rating “FR” means Fire Retardant that confirms and assures that a board won’t get fire.

This is the key factor that helps most manufacturers to provide a guarantee of safety to the customers in the case of heated boards.

FR4 PCB

The circuit currents in the boards are in pretty high values causing the heat for which an FR4 PCB board has good resistance to avoid heat.

The FR rating for such boards confirms that no matter how high the temperature gets, there won’t be any fire and more damage to the circuits.

PCB may be offering the FR4 PCB with an FR rating for your safety and compliance.

What Features Of FR4 To Consider When Choosing FR4 PCB?

For an FR4 PCB, you should be looking to find out the following features in FR4 material.

Thickness:

The thickness of FR4 material matters, and it can vary according to the demand of your project.

You must have a thickness of an FR4 board normally with 1.3 thou to 3 inches that can support heat and resist the temperatures as well.

FR4 PCB

Impedance Matching:

Matching the impedance in high-frequency PCB is very important.

The FR4 material should be good enough to match the capacitance level of multi-layered boards.

Space & Flexibility:

The FR4 material should also have the property to be flexible and have enough space to support the circuits on the board.

A thinner sheet can be preferred sometimes that takes less space and is more flexible.

Weight of FR4:

The FR4 board should have a suitable weight according to the size of the product since the thickness of the board determines its weight.

Thermal Conductivity:

The thermal coefficient of the dielectric constant is essential to consider to determine the temperature management of an FR4 board.

It’s important to choose FR4 material that is good heat resistant and can be used popularly for anything.

The best supplied in China, PCBMay is offering the top quality FR4 PCB material for your circuit boards having the best output performance.

You can now order your bulk from this company and get your FR4 PCB delivered to your country.