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Stech PCBA

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High-TG PCB

Boards built with high glass-transition-temperature laminate, which stays mechanically stable at higher operating temperatures.

PCB boards on a production line, illustrative
High-TG PCB, illustrative

Overview

Boards built with high glass-transition-temperature laminate, which stays mechanically stable at higher operating temperatures.

Why it matters

Standard FR-4 begins to soften at temperatures reachable during lead-free reflow or sustained high-power operation. High-Tg materials hold their mechanical properties further into that range.

Typical Applications

  • Power electronics
  • Automotive under-hood electronics
  • Assemblies with multiple reflow cycles
  • Industrial equipment in hot environments

Manufacturing Considerations

  • Higher Tg generally trades off against material cost and can affect drill and etch behavior
  • Thermal expansion characteristics still need matching to plated-via reliability requirements
  • Not automatically necessary for every high-temperature application — worth evaluating against the actual thermal profile

Technical Characteristics

Max layer count
120 layers
Min trace / space
2.2 / 2.2 mil
Min hole size
0.1 mm
Standard materials
370HRS1000-2IT180A (Tg 170–180 °C)
Surface finish options
HASL-LFENIGImmersion TinOSPImmersion SilverGold FingerElectroplated Hard GoldENEPIG
Typical turnaround
5–10 working days (samples 5–7)

Exact specifications are confirmed per order — send a spec through Request a Quote for a firm answer. Company-wide process limits are published on the Capabilities page.

Ready to spec a High-TG PCB?

Board type, quantity, layers, material — engineering reviews the full picture.