Rogers DiClad 870 2-Layer 5mil Low-Dk PTFE PCB with Immersion Silver

1.Introduction of DiClad 870

Rogers DiClad 870 laminates are woven fiberglass reinforced, PTFE-based composites that offer lower dielectric constant for use as printed circuit board substrates. By using fewer plies of woven fiberglass and a higher ratio of PTFE content, the DiClad 870 laminates offer lower dielectric constants (Dk) and dissipation factors at a similar thickness to other laminates in the DiClad series.

2.Key Features

DK of 2.33 at 10 GHz and 1 MHz, 50% RH
Dissipation factor of 0.0013 at 10 GHz, 0.0009 at 1MHz, 50% RH
TcDK of -161 ppm/°C ranging -10~140°C, 10 GHz
Arc Resistance >180 seconds
Moisture Absorption 0.02%
CTE in X-axis of 17 ppm/°C, Y-axis of 29ppm/°C and Z-axis of 217ppm/°C
Copper Peel Strength of 14 lbs/in, 10s @288°C
Flammability of UL 94-V0 grade

3.Benefits

Lowest moisture absorption among PTFE based composites
Stable Dk over a wide frequency range
Low Dk supports wider line widths for lower insertion loss
Higher PTFE content for improved electrical performance
Excellent copper peel strength for reliable assembly

4.PCB Construction Details

5.PCB Stackup (2-Layer Rigid Structure)

Copper layer 1 – 35 μm
DiClad 870 – 0.127 mm (5mil)
Copper layer 2 – 35 μm

6.PCB Statistics:

Components: 23
Total Pads: 52
Thru Hole Pads: 29
Top SMT Pads: 23
Bottom SMT Pads: 0
Vias: 19
Nets: 2

7.Typical Applications

Radar Feed Networks
Commercial Phased Array Networks
Low Loss Base Station Antennas
Guidance Systems
Digital Radio Antennas
Filters, Couplers, LNAs

8.Quality Assurance

Artwork Format: Gerber RS-274-X
Quality Standard: IPC-Class-2
Availability: Worldwide