CLTE Series laminates are high-frequency materials designed for precision and reliability in RF, microwave, and millimeter-wave applications. Follow these quick reference guidelines to optimize fabrication and achieve high-quality results.

Storage and Handling

1. Storage Environment
   • Store laminates flat in a clean, dry area.
   • Maintain temperatures between 20–25°C (68–77°F) with relative humidity below 50%.
2. Handling Precautions
   • Use clean gloves to prevent contamination.
   • Avoid bending or creasing laminates to prevent cracking.

Drilling

1. Tooling
   • Use carbide or diamond-coated drill bits for high-quality vias.
   • Match backer and entry materials to laminate hardness to reduce burrs.
2. Parameters
   • Entry Speed: 150–180 surface feet per minute (SFM).
   • Retract Speed: 350–400 SFM.
3. Post-Drill Cleanup
   • Deburr carefully to prevent layer delamination or material damage.

Etching

• Standard copper etching solutions are compatible with CLTE laminates.
• Use controlled etching to minimize undercuts and achieve consistent patterns.

Lamination

1. Preconditioning
   • Pre-bake laminates at 150°C (302°F) for 30–60 minutes to eliminate residual moisture.
2. Lamination Cycle
   • Temperature: 200–220°C (392–428°F).
   • Pressure: 200–300 psi.
   • Hold Time: 30–60 minutes at peak temperature.
   • Cool under pressure to avoid voids or warping.

Plating

1. Surface Preparation
   • Clean thoroughly to remove contaminants.
   • Plasma or chemical treatments may enhance adhesion.
2. Plating Process
   • Electroless and electrolytic copper plating methods are compatible.
   • Ensure uniform coverage for optimal electrical performance.

Routing and Cutting

1. Tooling
   • Use CNC routers with carbide or diamond-coated bits.
   • Laser cutting is also suitable for precise edge definitions.
2. Parameters
   • Adjust feed rates and speeds to minimize edge chipping or delamination.

Key Considerations

• Monitor all process steps for consistency and precision.
• Use proper tools and clean environments to ensure high yields and long-term laminate reliability.