Rogers AD350A is a woven fiberglass reinforced, ceramic-filled PTFE laminate engineered to excel in demanding thermal conditions. With properties like low loss, controlled Dk, and excellent thermal conductivity/stability, AD350A is well-suited for high-power designs that operate in extreme temperatures.

Key Features

• Dk of 3.5 ±0.05 allows repeatable performance across temperature shifts
• Extremely low loss tangent of 0.003 up to 10GHz and low Z-axis CTE of 35ppm/°C
• Decomposition temperature over 500°C and moisture absorption of just 0.1%

Benefits

• Superior heat dissipation keeps sensitive components cool under heavy loads
• Extremely low PIM and dimensional stability maintain efficiency and reliability

However, like any material, AD350A has limitations to consider:

Higher Cost:
The specialized composite formulation results in significantly higher material and manufacturing costs compared to FR-4 or similar laminates.

Limited Stackups:
While suitable for 2-layer boards up to 8 layers may be possible, complex multilayer designs push the limits of AD350A's CTE matching capabilities.

Moisture Absorption:
At 0.1%, absorbed moisture can slightly affect dielectric properties over time in humid environments.

thinner/tighter tolerances:
Minimum trace/space of 4/4 mils and base thickness of 0.8mm may preclude certain dense circuit designs.

Long Lead Times:
Special order boards typically require 4-6 weeks lead time versus 2-3 weeks for standard materials.

While a premier choice when heat must be wiped away, AD350A's added cost and design constraints necessitate careful evaluation against performance needs. It remains best suited for applications fully leveraging its thermal strengths.

Applications

• cellular base stations
• automotive electronics
• industrial controls
• and more—anywhere heat rejection is mission critical.

Please contact us to discuss how AD350A might benefit your next design project. Its thermal management abilities solve challenges in applications exposed to wide temperature extremes.

Bicheng PCB is headquartered in Shenzhen, a city with great economic vitality. Based in China, we adhere to the philosophy of servicing small and medium sized companies offering variety of circuit boards to meet the demands of market.

We maintain the highest standards which support products that exhibit exceptional quality, performance and reliability. The circuit board ranges from conventional FR-4 to PTFE, metal core to flexible circuits which are used in the industries of home appliances, portable and consumable electronics, medical filed, aerospace as well as telecommunications etc.

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