Dear Customers

PCBCart will have the official holidays since Jan. 24th through Feb. 3rd for Chinese Lunar New Year. Please schedule your order earlier (about half a month earlier for bare PCB orders and start assembly orders from now on) to ensure that the products could be manufactured and delivered on time before our holiday. If the orders with delivery date scheduled around those days need to be delivered before holiday, please contact us.

High -Tg PCB

High-TG PCB Advanced Circuits Specification

The glass transition temperature of a printed circuit board, referred to as "Tg ", indicates the point at which the PCB material will begin to transform. If the operating temperature exceeds the designated Tg value, the board will begin to change from a solid to a liquid state, which is likely to have an adverse effect on its ability to function.


In general, standard PCBs are manufactured with materials offering a TG value of 140C, which means it can withstand an operating temperate of 110°C. However, this may not be suitable for extreme-temperature processes that are commonplace in applications such as automotive, industrial or high-temperature electronics. In these situations, a PCB made from FR-4 material can often provide the best solution.

What Is FR-4?

FR-4 is a grade designation for flame-retardant fiberglass reinforced epoxy material. Thus, an FR-4 circuit board offers a much greater level of resistance to heat than a standard PCB. FR-4 circuit boards are divided into four classifications that are determined by the number of copper trace layers found in the material:

  • • Single-sided
  • • Double-sided
  • • Four, six or 10 layers
  • • More than 10 layers

Providing the Right High-Temperature PCB for Your Applications

PCBCart offers a wide selection of high-temperature PCB products manufacturing services either with FR-4 or other high-quality heat- and temperature-resistant Tg materials. We are able to perform high-temperature PCB fabrication for automotive, industry and high-temperature electronics applications. We can manufacture High-Tg PCBs with a Tg value of up to 180°C. Following table lists some of our commonly used materials for High-Tg PCBs production.

Material TG
(DSC, °C)
Td
(Wt, °C)
CTE-z
(ppm/°C)
Td260
(min)
Td288
(min)
S1141 (FR4) 175 300 55 8 /
S1000-2M (FR4) 180 345 45 60 20
IT180 180 345 45 60 20
Rogers 4350B 280 390 50 / /


Regardless of the scope or complexity of your PCB application, we have the technical expertise to develop the customized product that meets your specific requirements. Check our capabilities in the following table:

Features Capability
Quality Grade Standard IPC 2
Number of Layers 2 - 40layers
Order Quantity 1pc - 10000+pcs
Build Time 2days - 5weeks
Material S1141 (FR4), S1000-2M (FR4), IT180, Rogers 4350B
Board Size Min 6mm x 6mm | Max 500mm x 900mm
Board Thickness 0.4mm - 6.5mm
Copper Weight (Finished) 0.5oz - 2.0oz
Min Tracing/Spacing 3mil/3mil
Solder Mask Sides As per the file
Solder Mask Color Green, White, Blue, Black, Red, Yellow
Silkscreen Sides As per the file
Silkscreen Color White, Black, Yellow
Surface Finish HASL - Hot Air Solder Leveling
Lead Free HASL - RoHS
ENIG - Electroless Nickle/Immersion Gold - RoHS
Immersion Silver - RoHS
Immersion Tin - RoHS
OSP - Organic Solderability Preservatives - RoHS
Min Annular Ring 4mil
Min Drilling Hole Diameter 6mil
Other Techniques Gold fingers
Blind/Buried Vias
Countersink Holes

Order Online or Contact Us to Learn More

For High-Tg circuit boards quotation, please send your PCB file (Gerber format of file preferred. Please read our Preorder Checklist first) & requirements to sales@pcbcart.com, we'll quote accordingly.


If your application requires a Tg value which is not listed in the above table, feel free to discuss with our engineers at tech@pcbcart.com.

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