Explore materials, keep test conditions in view, and bring a clear preference to your manufacturer in Thailand.
253material & finish recordsResearch edition · May 2026
A reference for your brief. Research values require datasheet confirmation. Global material brands are shown; availability at a factory in Thailand must be confirmed separately.
253 records found
0/3 in comparison
FR-4 laminates · SPECIFICATION
370HR
Isola
Research values · confirm before use
Adds a preference for supplier review. Your board dimensions and other draft details stay in place.
Tg (°C)
180 (DSC)
Td (°C)
340
Dk @ 1GHz
4.17
Df @ 1GHz
0.016
Z-CTE (ppm/°C)
45
IPC-4101
/126
Lead-Free
Yes
Halogen-Free
No
How to read these specifications
Keep units, frequencies and method labels with every value. “DSC” and “DMA” identify different measurement methods; missing conditions must be confirmed in the datasheet. Do not choose an equivalent material from one number alone.
Source & review
PCB Materials Database · May 2026 3.1 Standard and High-Tg FR-4 Table 11 · row 13
Imported research. Original citation mappings need review and are not presented as verified evidence.
Isola publishes construction-dependent Dk/Df data. The values below are from the supplied research; reconcile the exact construction and test method with the manufacturer before specifying.