custom manufacture 2-Layer RT/duroid 5870 High-Frequency PCB – 10mil (0.3mm) laminate with ENIG Finish

2-Layer RT/duroid 5870 High-Frequency PCB – 10mil (0.3mm) with ENIG Finish

Product Introduction

We present our 2-Layer RT/duroid 5870 PCB – an ultra-thin, high-performance circuit board engineered for demanding stripline, microstrip, and millimeter-wave applications. Fabricated with Rogers RT/duroid 5870 glass microfiber-reinforced PTFE laminate and finished with Electroless Nickel Immersion Gold (ENIG) , this 0.3mm (10mil) board delivers an exceptionally low and stable dielectric constant (Dk 2.33 ±0.02 @ 10 GHz) and ultra-low dissipation factor (Df 0.0012). The randomly oriented glass microfibers ensure isotropic electrical properties and uniform Dk from panel to panel – critical for phase-sensitive designs up to Ku-band and beyond.

Key Specifications

PCB Stackup (2-Layer Rigid)

Note: No blind vias – all interconnections are through-hole vias. No solder mask or silkscreen ensures minimal signal interference for critical RF paths.

PCB Statistics

Dimensions: 85 mm × 36 mm ±0.15 mm (1 piece)

Components: 36

Total Pads: 56 (32 thru-hole, 24 SMT on top, 0 on bottom)

Vias: 28

Nets: 2

Why RT/duroid 5870?

RT/duroid 5870 is a glass microfiber-reinforced PTFE composite designed for exacting high-frequency circuits. Unlike woven-glass reinforced materials, the randomly oriented microfibers eliminate Dk variation caused by glass weave effects – delivering exceptional dielectric constant uniformity from panel to panel and across frequency. With the lowest electrical loss of any reinforced PTFE material, RT/duroid 5870 extends its usefulness to Ku-band, K-band, and millimeter-wave frequencies while remaining easily machinable using standard PTFE fabrication methods.

Key Features of RT/duroid 5870

Benefits of This 10mil RT/duroid 5870 PCB

Ultra-Low & Stable Dk (2.33 ±0.02): Tight tolerance ensures predictable impedance and phase matching – critical for phased arrays and beamforming networks.

Lowest Loss Reinforced PTFE: Df of 0.0012 at 10 GHz – extends performance to Ku-band and millimeter-wave (up to 100 GHz+).

No Glass Weave Effect: Randomly oriented microfibers eliminate Dk variation associated with woven-glass PTFE – ideal for long differential pairs and phase-sensitive circuits.

Uniform Panel-to-Panel: Consistent electrical properties simplify high-volume production without per-panel tuning.

Ultra-Thin 10mil Profile: Enables compact, low-profile designs and controlled impedance with narrow trace widths.

Process-Friendly: Easily cut, sheared, and machined to shape. Resistant to all solvents and reagents used in etching or plating edges and holes.

ENIG Finish: Provides a flat, solderable, oxidation-resistant surface for fine-pitch SMT components (24 top pads). No solder mask preserves RF performance on exposed traces.

High Moisture Resistance: 0.02% moisture absorption ensures stable electrical performance in humid environments.

Quality Assurance

100% electrical testing prior to shipment

IPC-Class-2 compliance

Full Gerber RS-274-X acceptance

ISO 9001 certified production

Typical Applications

Commercial Airline Broadband Antennas (In-Flight Connectivity)

Microstrip & Stripline Circuits (High-frequency filters, couplers, power dividers)

Millimeter-Wave Applications (5G NR FR2, E-band, V-band)

Radar Systems (Automotive, defense, weather)

Guidance Systems (Missile, drone, navigation)

Point-to-Point Digital Radio Antennas (Backhaul, microwave links)

Satellite Communication Downconverters

Test & Measurement Fixtures (Up to 100 GHz)