High-TG PCB - Best Option for Products at High Temperature

high tg pcb

Overview of High-Tg PCBs

  • PCBONLINE is able to produce PCBs with a high glass transition temperature (Tg) which enables your products to maintain high quality operation at high temperatures. High-Tg PCBs are able to maintain a rigid structure within their substrates at and above 170°C. High-Tg PCBs are able to maintain their mechanical and electrical characteristics at extremely high temperatures. High-Tg PCBs are widely used in communication, aerospace, defense, medical, automotive, and computer products.

Advantages of High-Tg PCBs

Why Choose High-Tg PCBs from PCBONLINE

  • • We only utilize the highest quality materials to make our high-Tg PCBs.
  • • We have highly experienced production lines and manufacturing processes for handling high-Tg materials effectively.
  • • Can produce high-Tg PCBs in any quantity from samples all the way to mass production.
  • • We have an extremely short lead-time for a fully customized high-Tg PCB.
  • • We can provide a one-stop-shop solution for all of your high-Tg needs including design, fabrication, and assembly.
  • • We offer free and quick technical support including layout suggestions.
high tg pcb by pcbonline

High-TG PCB - Manufacturing and Tech Specs

icon

Materials for Manufacturing

  • High-Tg PCBs are always used when high precision with strict quality requirements are required for your product. PCBONLINE only uses materials from internationally renowned brands which means that you can trust your product will be stable in all situations.
  • The following table lists all of the high-Tg PCB materials that PCBONLINE uses most commonly. You can also find the data sheets for those materials below.
  • Material Brand

    Type

    TG(℃)

    Date Sheet

    Nelco

    N4000-6

    175

    download

    Isola

    370HR
    IS410

    180
    180

    download downlooad

    ITEQ

    IT180I

    180

    download

    ShengYi

    S1000-2

    180

    download

    Nanya

    NP-180

    180

    download

    TUC

    TU768

    170

    download

    VENTEC

    VT-47

    170

    download

icon

Tech Specifications

No matter how complex your high-Tg PCB needs to be, we can meet your requirements! The following information below lists our production capabilities.

Parameter
Fabrication Process
Data
Layer Count
1-24
Final board thickness
0.4-3.2mm
Aspect Ratio
Laser via
PTH
3:4
10:1
Copper thickness
0.5~3oz
Impedance Control
Single Ended
Differential
±10%
±10%
Line/Space
Inner Layer
External Layer
2.5/2.5mil
2.5/2.5mil
Min Drill Bit size
8mil
Hole Size Tolerance
PTH
NPTH
±3mil
±2mil
Hole Position Tolerance
±2mil
Profile Tolerance
Punching
Routing
±3mil
±4mil
Solder Mask
Line to PAD
Registration
4mil
±2mil
Warpage
0.5%
Surface Finish
HASL(LF HASL)
ENIG
OSP
Immersion Tin
Immersion Silver
Hard Gold Plating
Peelable Mask
Carbon ink
SMD 40-2000u", GND 30-800u"
Au 1-5u", Ni 80-200u"
 
0.8-1.2um
0.15-0.45um
Au 1-50u", Ni 80-200u"
5mil
0.3mil
icon

Manufacturing Technology

  • High-Tg PCBs are made with thick copper and substate materials that are highly resistive to heat. Because of this, it is difficultto control during the production process, but PCBONLINE has a rich history of manufacturing these designs so we can share some of the technologies we use.
  • 1. Inner layer technology

    We use high-TG, high speed, high frequency, thick copper, thin dielectrics, and other special materials for our high-layer count boards.

    When boards have these high requirements for inner layer production then controlling the integrity of signal transmissions greatly increases in difficulty. As a trace width decreases a design is more likely to experience open and short circuits during manufacturing. These situations cause the yield of any design to decrease which is not ideal. On top of this, as the number of signal layers and fine traces increase, the probability of AOI missing issues on the inner layer increases. The thickness of the inner-layer dielectrics can be relatively thin and easy to fold which causes poor exposure when being etched. Most of the high-layer count PCBs are large in size and the cost associated with scrapping a finished product is rather high. Thankfully, all of these issues can be solved. PCBONLINE carries out the technical transformation of high-end equipment and imported high-precision etching line tools to improve the uniformity of etching, reducing problems such as rough edges and unclean etching, so as to improve the final quality of the design.

  • 2. Laminating technology

    Multiple inner layer dielectrics use semi-solidified sheets that are superimposed. Defects such as slide plate, lamination, resin cavities, and bubble residue are easily generated during the laminating process. In the design of the laminated structure, the heat resistance, voltage resistance, amount of glue and thickness of the medium should be fully considered, and a high quality software that controls the laminating process should be used. When using a lot of layers, it is hard to control the expansion and shrinkage coefficients which makes it difficult to maintain consistency. Also, thin dielectric materials can easily lead to the failure of reliability tests between two nearby layers. PCBONLINE has adopted materials with different Tg values during lamination pressing, which cannot be met with at the same time. For example, simple boards cannot be laminated at the same time as boards requiring special parameters. Controlling this process ensure that expansion and contraction coefficient are being observed carefully and that the performance of the different boards are being controlled.

  • 3. Drilling technology

    PCBONLINE also adopts special boards with high-Tg, high speed, high frequency, and thick copper, which increases the difficulty of controlling drilling roughness, burrs, and de-fouling. Multiple layers accumulated with the total copper thickness and board thickness can cause drilling to be extremely difficult. It is very easy to break a drill bit when drilling a hole in thick PCBs that have a high amount of coper. In this regard, PCBONLINE uses the appropriate reduction of insertion speed and rotation speeds for each drill location as well as accurately measures the expansion and contraction of the board to provide accurate coefficients to the manufacturing and drilling process.

Our PCB Service for You

icon

One-Stop PCB Manufacturing

icon

Quick Manufacturing and Delivery

icon

Custom PCB Design & Assembly

icon

21 Years of Experience

PCBONLINE

Online Buy Customized High-TG PCB - Manufacturing, Assembly, and OEM Service