RT/duroid 5880 PCB 2-layer 10mil Copper Filled Via

1.Introduction to RT/duroid 5880

Rogers RT/duroid 5880 high-frequency laminates are advanced PTFE composites reinforced with glass microfibers, specifically designed for precision stripline and microstrip circuit applications. The randomly oriented microfibers ensure exceptional uniformity of the dielectric constant across the material.

The dielectric constant of RT/duroid 5880 laminates remains consistent from panel to panel and stable over a wide frequency range. Their low dissipation factor enhances the applicability of RT/duroid 5880 laminates to Ku-band frequencies and beyond.

These laminates can be easily cut, sheared, and machined into various shapes. Additionally, they exhibit resistance to all solvents and reagents, whether hot or cold, that are typically used in etching printed circuits or plating edges and holes.

2.Features

Dielectric Constant: 2.2 with a tight tolerance of 0.02 at 10 GHz/23°C
Dissipation Factor: 0.0009 at 10 GHz
Temperature Coefficient of Dielectric Constant (TCDk): -125 ppm/°C
Low Moisture Absorption: 0.02%
CTE: X-axis 31 ppm/°C, Y-axis 48 ppm/°C, Z-axis 237 ppm/°C
Isotropic Properties: Yes

3.Benefits

Uniform electrical properties across a wide frequency range
Easily cut, sheared, and machined to desired shapes
Resistant to solvents and reagents used in etching or plating
Ideal for high-moisture environments
Well-established material with a proven track record
Lowest electrical loss among reinforced PTFE materials

4.PCB Stackup: 2-Layer Rigid PCB

Copper Layer 1: 35 µm
RT/duroid 5880: 0.254 mm (10 mil)
Copper Layer 2: 35 µm

5.PCB Construction Details

Board Dimensions: 50 mm x 45 mm (1 PCS), ±0.15 mm
Minimum Trace/Space: 5/4 mils
Minimum Hole Size: 0.2 mm
Blind Vias: None
Finished Board Thickness: 0.4 mm
Finished Copper Weight: 1 oz (1.4 mils) for outer layers
Via Plating Thickness: 20 µm
Surface Finish: Immersion Gold
Top Silkscreen: White
Bottom Silkscreen: No
Top Solder Mask: Matt Green
Bottom Solder Mask: No
Copper Filling Vias: On designated IC pads
Electrical Testing: 100% electrical test conducted prior to shipment

6.PCB Statistics

Components: 23
Total Pads: 40
Through Hole Pads: 21
Top SMT Pads: 19
Bottom SMT Pads: 0
Vias: 42
Nets: 2

7.Artwork and Standards

Type of Artwork Supplied: Gerber RS-274-X
Accepted Standard: IPC-Class-2
Availability: Worldwide

8.Typical Applications

76-81 GHz automotive radar sensors