High-Performance RT/duroid 5880 3-Layer PCB for RF Microwave Circuits
1.Introduction
Rogers RT/duroid 5880 high-frequency laminates are PTFE composites reinforced with glass microfibers, designed for demanding stripline and microstrip circuits. Their randomly oriented microfibers ensure exceptional dielectric constant uniformity (2.2 ±0.02) across panels and frequencies, making them ideal for Ku-band and beyond.
With an ultra-low dissipation factor (0.0009 at 10 GHz) and resistance to solvents used in PCB fabrication, RT/duroid 5880 laminates are machinable and reliable for applications like radar systems, broadband antennas, and millimeter-wave designs.
2.Key Performance Features
Dielectric Constant 2.2 ±0.02 at 10 GHz
Dissipation Factor 0.0009 at 10 GHz
Thermal Stability TCDk of -125 ppm/°C
Moisture Absorption 0.02%
CTE X 31 ppm/°C, Y 48 ppm/°C, Z 237 ppm/°C
Isotropic Properties Uniform electrical performance
3.PCB Specifications at a Glance
| Specification | Details |
|---|---|
| Base Material | RT/duroid 5880 / RO4450F |
| Layer Count | 3 layers |
| Board Dimensions | 49.1mm × 43.2mm (±0.15mm) |
| Minimum Trace/Space | 5/7 mils |
| Minimum Hole Size | 0.4mm |
| Via Type | Through-hole only (No Blind vias) |
| Finished Board Thickness | 3.3mm |
| Copper Weight | 1oz (1.4 mils) all layers |
| Via Plating Thickness | 20 μm |
| Surface Finish | Immersion Gold (ENIG) |
| Silkscreen | None (Top/Bottom) |
| Solder Mask | None (Top/Bottom) |
| Electrical Testing | 100% tested prior to shipmen |
Copper_layer_1 - 35 μm
RT/duroid 5880 - 1.575 mm (62mil)
Copper_layer_2 - 35 μm
RO4450F Bonding ply - 0.102mm (4mil)
RT/duroid 5880 - 1.575 mm (62mil)
Copper_layer_3 - 35 μm
5.PCB Statistics:
Components: 8
Total Pads: 29
Thru Hole Pads: 17
Top SMT Pads: 12
Bottom SMT Pads: 0
Vias: 8
Nets: 4
6.Benefits
Uniform electrical properties across frequencies
Machinable and solvent-resistant
Lowest loss among reinforced PTFE materials
Reliable in high-moisture environments
7.Typical Applications
76-81 GHz automotive radar sensors
Patch antennas for mm-wave radar
RF feed networks
Multi-chip radar IF layers
8.Quality Assurance
IPC-Class 2 compliant
100% electrical tested
Global availability
Gerber RS-274X support
RT/duroid 5880 combines precision, durability, and performance for advanced RF and microwave designs.