• Normal FR4 material with TG130-135. ​

    Applications:​  Reinforcement laminate, Potentiometer, Resistance,
    Comsumer electronics,Toys,etc
    Here is the datasheet.
    1.      KingBoard  KB-6164
    2.      ShengYi       S1141
    3.       NANYA      NP-140TL
    • UVB and AOI
    • Excellent heat resistance and mechanical properties
    • IPC-4101C/21 specification is applicable
  • Applications:
    Suitable for high aspect ratio and high layer PCB.Widely used in computer,

    communication equipment,precise apparatus and instrument,router,medical



    1. Shengyi  S1000-2
    2. ITEQ        IT-180
    3. ISOLA       FR408  FR408 is widely be replaced with S1000-2 or IT-180 or TU-768
    4. TUC        TU-768  (any layer HDI PCB,we prefer use TU-768 material).
    • Higher heat resistance;
    • Lower Z-axis CTE;
    • Excellent thermal stress resistance;
    • High thermal shock resistance;
    • Excellent PTH reliability.
  • High Frequency material (RF board,Microwave)

    Applications:Cellular Base Station Antennas and Power Amplifiers.RF Identifi cation Tags.Automotive Radar and Sensors.​LNB’s for Direct Broadcast Satellites,etc
    See our RF board.
    1.  Rogers       RO4000 series   
    2.  Tacanic      TLX series   RF35​
    3.  Arlon     AD250 series  ,TC350L
    4.  PTFE, F4B, F4BM,
    • Low dielectric tolerance and low loss
    • Stable electrical properties vs. frequency
    • Low Z-axis expansion
    • Low in-plane expansion coeffi cient
  • Thermal Conductive Board (TCB), or Insulated Metal Substrate (IMS), provides the advantages of high thermal conductivity, reliability
    and solder heat endurance. The TCB substrate is a sandwich structure, which includes layers of conductor, insulator and metal base.
    Traditionally, this insulator is made of epoxy, epoxy filled glass fiber, polyimide, or other dielectric materials. However, these kinds of
    insulators could not meet the requirement in high-power electronic devices. The heat generated by these devices will accumulate, and
    the life time and reliability of the end product will decrease

  • SH260 are widely used in Aeronautics and Astronautics,Ultra multi-layer PCB (>10 layers),Outdoor PCB,Long-term High Temperature Environment PCB.​Coal Mine ,very low CTE etc.
    1.           Arlon          85N
    2.           ShengYi      SH260
     We recommend to use SH260 material. you can find the difference with Arlon 85N.It is high performan material, and the cost of SH260 is only a half of 85N.
    Properties     Condition Unit SH260 1.2mm H/H Arlon 85N 1.0mm H/H
    tg  TMA 255 ﹥250
    Td 5% Loss,10℃/min@N2 423 416
    Thermal resistance T300 min ﹥60 ﹥60
    Flammability UL 94 -- HB HB
    Water absorption PCT‐105KPa/120min % 0.36 0.54
    PCT (2 Hours) dipping@288℃,10 Sec -- ﹥10 X ﹥10 X
    Z‐axis CTE (50‐260 ℃) TMA % 1.2 1.2
    Dielectric breakdown D‐48/50+D‐0.5/23 kV kV40.5 --
    Peel strength 288℃/10s N/mm 1.19/1.23 1.10/1.17
    Flexural strength @200 ℃ GPa 20.5 ---
  • Halogen-free material


    ShengYi S1170G

    • Anti-CAF capability
    • Lead-free compatible
    • Excellent through-hole reliability
    • ​Halogen, antimony and red phosphorous free

    CEM-3 material  Q260


    CEM-3 material has a better thermal conductivity than normal FR4.
    ​And it has CTI PROPERTIES but lower cost than Aluminum material. A few of customers would like to use CEM-3 now.

    Power base board
    LED display and lighting
    ​Household electrical machine

    Panasonic material


    Panasonic M7 material is an Ultra-low transmission loss Highly heat resistant Multi-layer circuit board materials.
    ​Laminate R-5785(GN) R-5785(N)
    Prepreg R-5680(GN) R-5680(N)


    • Dk 3.4 Df 0.002@12GHz
    • Tg (DSC) 200℃
    • T288 (with copper) >120min

    High CTI 600V PCB


    CTI is Comparative Tracking Index.
    ​CTI is a quality item that refers to copper clad laminate which is widely used in home electrical appliance or other high-voltage(110V, 220V) electrical apparatus.It is a simulated conditon that the PCB is polluted in its working environment, which result in leakage or short-circuit at the track gap of the PCB surface, being accompanied by heat releasing and charring.
         ShengYi S1600

    • CTI>600V
    • Tg 135
    • Td 310

PCB Material Center


Printed circuit board is the most important part of electronics. The PCB material is the most cost of the whole PCB. So,before PCB design, you need to know which material is the best for your product.PCB design is just a first step,you also need to know the  application environment of PCB,such as outdoor,underwater,high temperature.Good meterial can support long life for your eletrical equipments.
Storm Circuit has many different materials for you to choose. What customers need,then we will do . 

RO3003 material,a full sheet

0.2mm Polyimide PCB,ENEPIG

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Download Material List

Top Quality Quick Turn Turnkey assembly 


How to choose PCB material?


The key parameters for PCB material are Tg,Dk,Df,CTE,etc. Here we have a PCB material's parameters list for you to reference.

Major PCB Material to download

 To select the right PCB material, you need to see a few factors. If you know about the factors that you need to look at, then you can easily get the best PCB material for your project, and the PCB will provide the required results. You can also talk to the PCB manufacturer or fabricator about these factors. Let’s look at the factors that are essential to consider while selecting a PCB material.

A) Tg:Glass Transition Temperature

 The substrate should have a high glass transition temperature (Tg). A high Tg can deal with heat dissipation and ambient temperature. You must select those materials that have a higher Tg than the circuit temperature. Otherwise, the substrate will melt down or bend during the operation. >=8 layers PCB,Storm PCB must use >Tg170 PCB material .Tg150 or less is not safe for high layer PCB.

B) CTE:Coefficient of Thermal Expansion

The PCB material should have a low coefficient of thermal expansion. If the coefficient is high, then it will expand more per unit increase in temperature. This will affect the length, width, and thickness of the PCB board. The PCB will change its shape easily and may cause damage to the board and components. Make sure to select the material that has a low coefficient of thermal expansion.

C) Heat Resistance

High heat resistance is required. Generally, PCB must have a heat resistance of 250 ℃ / the 50S. If you need more heat resistance, then you can discuss it with your PCB manufacturer.

D) Flatness

There should be excellent flatness. The warpage should be less than 0.0075mm / mm.

E) Dielectric Constant and Losses

The PCB material should have an excellent dielectric constant. It will provide excellent insulation and offer the desired results. Moreover, the dielectric losses should be low to save energy.Dk and Df is very important for high frequency PCB.very low loss is usually RF material ,Rogers RO400.

F) Degree of Bending

The PCB should not bend easily. If it bends on the ambient temperature of the device where it is installed, then it will wear quickly. It will not last for a long time. Therefore, the PCB should have a low degree of bending so that it cannot bend on the circuit operating temperature. Its heat resistance should be high, depending on the place where it will be used. Some substrates, like FR-4 have a low degree of bending, which is suitable. The degree of bending matters a lot when the PCB is larger than 3.2 × 1.6mm. Due to the large size, it is affected more due to bending. So, you need to be more careful in the case of large PCBs. Moreover, the appearance is required to be smooth and flat without warpage, cracks, scratches, and rust.


Also,there are many other factors,such as voltage (if you apply in high voltage,CT>600V)

Typical Product
Material Type
PCB material Brand
FR4/Rigid Polyimide
Ultra Low Mid loss/Mid loss
High speed FR4
Ultra Low Mid lossc/RF
High frequency
High frequency