What is a High-Tg PCB
Glass transition temperature (Tg) is the temperature at which a substrate transitions from a glassy, rigid state to a rubbery state.High Tg boards are specifically designed to operate at high temperatures.A PCB is considered a high Tg board if its Tg is higher than 180 °C.
PCBAndAssembly 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:
| Feature | 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 |