CuClad 250 PCB 2-Layer 20mil High-Frequency PTFE Laminates for Radar and Microwave Components

1. Introduction to CuClad 250

Rogers CuClad 250 laminates are high-performance, cross-plied woven fiberglass and PTFE composite materials. These laminates feature low dielectric constants ranging from 2.40 to 2.55 at 10GHz. With a higher fiberglass/PTFE ratio, CuClad 250 provides mechanical properties comparable to conventional substrates, ensuring excellent dimensional stability and reduced thermal expansion in all directions.

2. Features

Dielectric Constant DK 2.4 - 2.55 at 10GHz / 1MHz
Dissipation Factor 0.0017 at 10GHz
Low Moisture Absorption 0.03%
Strong Peel Strength 14 lbs/in
Low outgassing Performance
Total Mass Loss (TML): 0.01%
Collected Volatile Condensable Material (CVCM): 0.0%
Water Vapor Regain (WVR): 0%
Construction Cross-plied woven fiberglass with alternating plies oriented at 90 degrees
High PTFE to Glass Ratio

3. Benefits

Balanced electrical and mechanical properties due to cross-plied construction
Low Dk allows for wider line widths, minimizing insertion loss
Reduced circuit losses at high frequencies
Improved dielectric constant uniformity compared to non-woven fiberglass laminates
Ideal for Er-sensitive circuits

4. PCB Stackup: 2-Layer Rigid PCB

Copper Layer 1:35 µm
Rogers CuClad 250 Core:0.508 mm (20 mil)
Copper Layer 2:35 µm

5. PCB Construction Details

Board Dimensions: 23.97 mm x 30.09 mm (1 PCS), +/- 0.15 mm
Minimum Trace/Space: 4/4 mils
Minimum Hole Size: 0.3 mm
Blind Vias: None
Finished Board Thickness: 0.6 mm
Finished Copper Weight: 1 oz (1.4 mils) for outer layers
Via Plating Thickness: 20 µm
Surface Finish: ENIG
Top Silkscreen: White
Bottom Silkscreen: None
Top Solder Mask: Blue
Bottom Solder Mask: None
Testing: 100% electrical testing prior to shipment

6. PCB Statistics

Components: 9
Total Pads: 23
Through Hole Pads: 11
Top SMT Pads: 12
Bottom SMT Pads: 0
Vias: 15
Nets: 2

7. Type of Artwork Supplied

Gerber RS-274-X

8. Quality Standard

IPC-Class-2

9. Availability

Worldwide

10. Typical Applications

Radars, Electronic Countermeasures, Electronic Support Measures
Microwave Components (LNAs, filters, couplers, etc.)