FR408HR 4-Layer 1.6mm Via in Pad HDI PCB with Tg190 for Networking and Communications

Printed Circuit Boards are custom-made products; the images and specifications provided are for reference only.

General Description

This FR408HR-based 4-layer rigid PCB is engineered for high-performance applications requiring enhanced thermal reliability and signal integrity.

FR408HR PCB board features a 1.6mm total thickness and is constructed with Isola’s advanced FR408HR laminate system, which combines a multifunctional resin formulation with E-glass reinforcement. Designed for demanding environments, this 4-Layer FR408HR PCB supports complex circuitry with high-density interconnects (HDI), fine trace widths, and advanced via structures, including blind and buried vias. Its compatibility with lead-free assembly and resistance to conductive anodic filament (CAF) make it suitable for industrial, networking, and medical applications.

PCB Construction Details

Additional Components & Features

Board Specifications: 140mm × 160mm dimensions, 0.3mm minimum hole size, 102μm trace/space, blue solder mask (10μm) with white silkscreen on both sides.

Via Structure: Blind vias (top to inner layer 1), buried vias (inner layer 2 to 3), and filled/capped vias for enhanced reliability.

Statistics: 92 components, 201 pads (75 thru-hole, 126 SMT), 72 vias, and 8 nets.

Artwork & Quality: Gerber RS-274-X format, IPC-Class-3 compliance, and worldwide availability.

Material Advantages

FR408HR PCBs deliver 30% lower Z-axis expansion and 25% greater electrical bandwidth than conventional materials. Key attributes include:

Thermal Performance: Tg of 190°C, T260 >60 minutes, and 6× reflow (260°C) capability.

Electrical Properties: Dielectric constant of 3.65 and dissipation factor of 0.0095 at 10GHz.

Reliability: UV blocking for AOI compatibility, CAF resistance, and UL-94 V0 flammability rating.

Typical Applications

High-speed digital systems

Networking/communication infrastructure

Medical and industrial instrumentation

Storage peripherals and high-reliability HDI designs

Why Choose This PCB?

The combination of FR408HR laminate’s low-loss characteristics, robust thermal endurance, and support for dense interconnects ensures optimal performance in critical applications. Its compliance with IPC-Class-3 standards further guarantees exceptional workmanship and longevity.

Order Now for High-Reliability Applications!

Ideal for networking, medical, and industrial systems, this HDI PCB balances precision engineering with scalable production. Contact us to integrate this solution into your next project!