Rogers Kappa 438 2-Layer 30mil High-Frequency PCB with ENIG Finish

1.Introduction of Core

Rogers Kappa 438 laminates were designed using a glass reinforced hydrocarbon ceramic system that offers superior high frequency performance and low cost circuit fabrication resulting in a low loss material which can be fabricated using standard epoxy/glass (FR-4) processes. Kappa 438 laminates also have the UL 94 V-0 flame retardant rating and are lead free solder process compatible. Standard thicknesses include 10, 20, 30, 40 and 60 mil.

Kappa 438 laminates offer dielectric constants (Dk) tailored to FR-4 industry standard norms which facilities ease of converting existing FR-4 designs where better electrical performance is needed.

2.Key Features

Glass reinforced hydrocarbon thermoset platform
Dk of 4.38 is tailored to FR-4 industry standard norms
Tighter Dk and thickness tolerance than FR-4
Low Z Axis CTE of 42 ppm/°C
High Tg of > 280°C TMA
Thermal coefficient of Dk of -21 ppm/°C during -50°C to 150°C
Meets UL 94-V0 requirements

3.Benefits

Ease of PCB manufacturing and assembly in line with FR-4
Design Dk enables ease of converting existing FR-4 designs needing better electrical performance
Consistent circuit performance
Improved design flexibility and plated through-hole reliability
Automated assembly compatible
Low loss material with cost-effective fabrication

4.PCB Construction Details

5.PCB Stackup (2-Layer Rigid Structure)

Copper layer 1 – 35 μm
Rogers Kappa 438 – 0.762 mm (30mil)
Copper layer 2 – 35 μm

6.PCB Statistics:

Components: 51
Total Pads: 43
Thru Hole Pads: 25
Top SMT Pads: 18
Bottom SMT Pads: 0
Vias: 51
Nets: 2

7.Typical Applications

Carrier Grade WiFi/Licensed Assisted Access (LAA)
Small Cell and Distributed Antenna Systems (DAS)
Vehicle to Vehicle/Vehicle to Infrastructure Communications (V2X)
Internet of Things (IoT) Segments: Smart Home and Wireless Meters

8.Quality Assurance

Artwork supplied: Gerber RS-274-X
Accepted standard: IPC-Class-2
Availability: Worldwide