High-Density Thick Film Substrates

Why It Matters

The offering combines cost efficiency with aerospace‑grade performance, enabling designers to meet stringent reliability requirements while reducing bill‑of‑materials in high‑risk applications.

Key Takeaways

• 6‑8 layer ceramic substrates with gold or silver conductors
• Silver interlayers achieve 1‑3 mΩ/sq conductivity
• Dielectric constant tunable 6–12, insulation up to 1,000 V
• Line/space as fine as 0.002″ with tight tolerances
• Meets MIL‑STD‑883, 202, PRF‑38534 for aerospace reliability

Pulse Analysis

Demand for compact, high‑performance electronic modules in defense and aerospace has driven manufacturers to seek substrates that balance density, reliability and cost. Traditional gold‑based thick‑film circuits deliver proven wire‑bondability but at a premium price, while emerging silver‑based interlayers promise lower resistance and material savings. Remtec’s portfolio directly addresses this tension, offering a scalable solution that can be produced in low, medium or high volumes, making it attractive for programs where both performance and budget constraints are critical.

Technically, Remtec’s substrates stand out for their flexibility. Engineers can select between gold for superior solderability or silver for up to three‑fold conductivity improvement, while dielectric constants can be tuned between 6 and 12 to match impedance requirements. The ability to print resistors ranging from milliohms to gigaohms with 1‑10 % tolerance, combined with hermetic plugged vias and optional Ni‑Au plating, ensures robust operation under extreme temperature cycles and harsh environments. Advanced manufacturing—automated screen printing, laser trimming and photolithography—delivers line/space dimensions as fine as 0.002 inches with ±0.00025 in tolerance, supporting the high‑density interconnects demanded by modern radar and satellite payloads.

Compliance with MIL‑STD‑883, MIL‑STD‑202 and MIL‑PRF‑38534 underscores the substrates’ suitability for mission‑critical applications, reducing qualification time for system integrators. As power densities rise and electronic architectures become more integrated, the need for reliable, high‑conductivity multilayer ceramics will only intensify. Remtec’s blend of cost‑effective materials, precise manufacturing and rigorous testing positions it to capture a growing share of the defense and space substrate market, where reliability cannot be compromised.