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FR4 Circuit Board Supplier

Minimum Line Width : 3MIL ;

Minimum Line Spacing : 3MIL ;

Drilling Diameter : ≥ 0.1mm ;

Processing Size : 600 * 1200mm 

Plate Thickness : 0.1-10mm ;

Processing Layers : 2-36 layers;

Special Process : Thick gold plate, ultra thick plate, depth control drilling, back drilling, hole filling electroplating, copper slurry plug hole, mechanical blind hole, etc.

Surface Treatment Processes : Include OSP, gold precipitation, silver precipitation, tin precipitation, gold plating, pure gold plating, thick gold plating, nickel palladium gold plating, nickel plating, tin plating, tin spraying, etc.


FR4 sheet is a material with many excellent properties, widely used in many industries. The following is a detailed description of the main properties of FR4 sheet and its influencing factors:

The main properties of FR4 sheet:

High Temperature Resistance: 

FR4 sheet can withstand temperatures up to 180°C, which makes it widely used in electronic devices that require high-temperature stability, such as computer motherboards and power adapters.

Good Corrosion Resistance: 

FR4 sheet has strong corrosion resistance and can resist the erosion of most chemicals, so it has a long service life.

High Mechanical Strength: 

FR4 sheet has high mechanical strength and can resist external shocks and vibrations, thus protecting the circuits and components inside the equipment.

Good Electrical Properties: 

FR4 sheet has stable electrical properties, making it widely used in the electrical and communication fields.

Dimensional Stability: 

FR4 sheet has high dimensional stability, which ensures its accuracy and reliability in a variety of applications.

Good Processing Performance: 

FR4 sheet has greater superiority in processing than fiberglass cloth substrates of other resins, which makes it more flexible and efficient in the manufacturing process.


Factors affecting the performance of FR4 sheet:


Temperature is one of the key factors affecting the performance of FR4 sheet. As the temperature rises, certain properties of FR4 sheet may change, such as thermal conductivity. Therefore, when using FR4 sheet, you need to consider the temperature of its working environment to ensure its stable performance.

Humidity and Relative Humidity: 

Humidity and relative humidity can also affect the performance of FR4 sheets. Excessive humidity may lead to a reduction in the insulating properties of the sheet, so care needs to be taken when using FR4 sheet in humid environments.

Vacuum: In some specific applications, the vacuum level may also have an effect on the performance of FR4 sheet. For example, certain physical and chemical properties of FR4 sheet may change under high vacuum.

The Quality of The Material Iitself: 

High-quality FR4 sheets typically offer more consistent performance and a longer service life. Therefore, when choosing FR4 sheet, you should choose high-quality products produced by regular manufacturers.

To summarize, FR4 sheet has a variety of excellent properties, but its performance may be affected by a variety of factors such as temperature, humidity, vacuum and so on. Therefore, when using FR4 sheet, you need to fully understand its performance characteristics and application environment to ensure its stable and reliable performance.


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