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

4.PCB Stackup: 3-layer rigid PCB

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.