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High -Tg PCB
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.
Standard PCBs are manufactured with materials offering a TG value of 140C, which can withstand an operating temperate of 110°C. While 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
Plus Circuit 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 customized PC boards that meets your specific demands. Check our capabilities in here:
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 |