High Tg PCBs

High Tg PCBs

The glass transition temperature of PCB, referred to as Tg is an important factor to consider when fabricating PCBs for high temperature applications.  

The glass transition temperature of PCB, referred to as "Tg" is an important factor to consider when fabricating PCBs for high temperature applications. If the temperature in the application area exceeds the designated “Tg” value, it transforms the resin matrix of the board from a solid state into a soft, elastic one. This in turn leads to performance and functionality issues. Hence, to meet the requirements of PCBs for the extreme-temperature applications, we, at Sierra Assembly, offer high Tg PCBs that are manufactured using FR-4 substrate material with higher heat resistance. Our range of high temperature PCBs are largely chosen across industries including defense, military, nuclear, power, and automotive among others.

Sierra Assembly’s High Temperature PCB Fabrication Capabilities
You can use our high Tg PCBs with confidence as they assure unfailing performance in applications exposed to high thermal loads. Being in the circuit board making industry for several years, we own the expertise, knowledge and industry experience to act beyond your expectations. As a leading high Tg PCB manufacturer, we possess the following capabilities:

  • Our high temperature PCBs, which have Tg≥170℃, are manufactured utilizing the best of flame-retardant fiberglass reinforced epoxy material (FR-4). The use of these materials protects the PCB board from the damaging effects of thermal expansion.
  • The PCBs which are made using high-quality heat- and temperature-resistant Tg materials are tested and certified with
    • ISO 9001:2015+ AS9100D Certified
    • ISO 13485 Compliance
    • J-STD-001 Compliance
    • IPC-WHMA-A-620 Compliance
    • IPC-CC-830B Compliant
    • IPC-A-610-D and ANSI/J-STD-001 standards Compliance
  • Being an experienced high Tg PCB manufacturer, we ensure to fabricate the board with high end mechanical strength, dimensional stability, and thermal decomposition.
  • Sierra’s high Tg PCBs are made available with the following surface treatment options.
    • HASL - Hot Air Solder Leveling
    • Lead Free HASL
    • ENIG - Electroless Nickle/Immersion Gold
    • Immersion Silver
    • Immersion Tin
    • OSP - Organic Solderability Preservatives

Typical Applications of High Tg PCBs
Our High Temperature PCBs are amongst the flagship products, finding applications across industries that demand electronics systems which can operate in relatively high temperatures. We serve customers from varied industries by providing high-temperature heat-resistant PCBs with required specifications in short turnaround time. A few application examples of these PCBs include:

  • Engine controllers
  • Down hole oil drilling equipment
  • Medical diagnostic instruments

Would you like to use high temperature PCBs in your next project? Get it done in required specification from the leading name in the industry, Sierra Assembly Technology. With the right people, advanced manufacturing facilities and cutting edge technologies, we bring you performance driven high Tg PCBs that work reliably in high temperature applications.  Talk to an expert at Sierra and know what new we can offer under this category.

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