ISO 9001 certified

ISO 9001 Certified

RoHS compliant certified

RoHS Compliant

UL Listed certified

UL Listed

FR4 PCB Boards

FR4 PCB Boards from FX PCB encompass a comprehensive range of rigid, multilayer, high-Tg, black substrate, heavy copper, and specialty PCBs built on flame-resistant FR4 material. Serving aerospace, medical, automotive, and telecommunications industries, these boards deliver exceptional thermal stability, signal integrity, and compliance with IPC, ISO, UL, and RoHS standards.

Rigid FR4 PCB
6 Layer PCB
Black FR4 PCB
Tg180 & High Tg PCB
Multilayer PCB
Custom PCB and PCBA Manufacturing Services
Heavy Copper PCB
Copper Coin PCB

Our Range of Products
Rigid FR4 PCB

Rigid FR4 PCB

  • 1 to 68 layers for complex designs
  • ISO-9001, UL & RoHS certified boards
  • 0.05mm min line width & spacing
6 Layer PCB

6 Layer PCB

  • Blind & buried vias for miniaturization
  • Impedance control for high-speed signals
  • 1/2oz to 10oz copper weight per layer
Black FR4 PCB

Black FR4 PCB

  • Black FR4 core with low dielectric loss
  • High thermal conductivity keeps parts cool
  • Resistant to vibration, shock & harsh use
Tg180 & High Tg PCB

Tg180 & High Tg PCB

  • Tg180 withstands 180°C without deforming
  • Low dielectric loss for signal integrity
  • Reduced moisture absorption vs. standard PCB
Multilayer PCB

Multilayer PCB

  • 4, 6, 8+ layer scalable configurations
  • Impedance control for RF & digital signals
  • EMI shielding & metal-core heat dissipation
Custom PCB and PCBA Manufacturing Services

Custom PCB and PCBA Manufacturing Services

  • 15+ years PCB fabrication & PCBA expertise
  • ISO-certified facility, prototype to volume
  • Official quote delivered within 24 hours

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Frequently Asked Questions

What is FR4 material and why is it used in PCBs?

FR4 is a glass-reinforced epoxy laminate rated for flame resistance (Flame Retardant Grade 4). It is the industry-standard PCB substrate due to its excellent mechanical strength, high insulation resistance, low moisture absorption, and cost-effectiveness. It supports a wide range of surface finishes, layer counts, and copper weights, making it suitable for consumer electronics through to aerospace applications.

What layer counts are available for FR4 PCBs?

What is the difference between standard FR4 and High-Tg FR4 PCBs?

What surface finishes are available for FR4 PCBs?

Are FR4 PCBs from FX PCB RoHS and REACH compliant?

What is the minimum order quantity for FR4 PCB prototypes?

What industries are FR4 PCBs used in?

Didn't find what you're looking for?

Talk to our experts for custom solutions and tailored guidance.

Industries We Serve

Aerospace & Defense

Aerospace & Defense

High-Tg and rigid FR4 PCBs for radar, military equipment, satellite systems, and aerospace avionics.

Medical Devices

Medical Devices

Precision FR4 PCBs for MRI systems, X-ray equipment, heart monitors, and diagnostic medical instruments.

Automotive & Electric Vehicles

Automotive & Electric Vehicles

Heavy copper and rigid FR4 PCBs enabling reliable power distribution and EV module electronics.

Telecommunications

Telecommunications

Multilayer and impedance-controlled FR4 PCBs for 5G infrastructure, base stations, and networking equipment.

Didn't find what you're looking for?

Talk to our experts for custom solutions and tailored guidance.

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Rigid FR4 PCB | FR4 Double Sided PCBs - Best Sellers

FR4 Double Sided PCBs - Best Sellers

FR4 Double Sided PCBs are rigid, fiberglass-based circuit boards with copper traces on both sides, enabling compact, high-density circuit layouts. Suitable for consumer electronics, telecommunications, medical devices, automotive, aerospace, and industrial applications, they deliver reliable electrical performance, thermal stability, and compliance with IPC, RoHS, and UL standards.
Rigid FR4 PCB | Custom FR4 PCBs - Manufacturers and Suppliers

Custom FR4 PCBs - Manufacturers and Suppliers

Custom FR4 PCBs from FX PCB encompass rigid single-sided, double-sided, and multilayer boards engineered for demanding applications across aerospace, medical, automotive, telecommunications, and consumer electronics. With layer counts from 1 to 68, heavy copper options, high-Tg variants, and specialty substrates, these boards deliver precision, thermal stability, and regulatory compliance.
Tg180 & High Tg PCB | High TG180 FR4 PCB Design for High-Reliability Electronics

High TG180 FR4 PCB Design for High-Reliability Electronics

High TG180 FR4 PCB Design for High-Reliability Electronics covers a range of rigid and multilayer PCBs engineered with elevated glass transition temperatures (Tg150–Tg180). These boards deliver superior thermal stability, mechanical rigidity, and electrical performance for demanding applications in aerospace, medical, automotive, and industrial sectors.

Why Electronics Manufacturers Choose FX PCB

15+ Years of PCB Manufacturing Expertise

Over 15 years of deep-rooted experience in FR4 PCB fabrication, from single-layer prototypes to complex 68-layer multilayer boards.

ISO-Certified, IPC & RoHS Compliant

ISO9001, ISO13485, and ISO14001 certified facilities with 100% electrical testing on every bare board and IPC-A-610 Class 2/3 assembly standards.

Prototype to Mass Production at Scale

Seamlessly scale from prototype to high-volume production without switching suppliers, with official quotes delivered within 24 hours.

Get a Custom FR4 PCB Quote Within 24 Hours

Submit your Gerber files or design specs and our engineers will respond with a detailed quote and DFM review within 24 hours.

Contact Us Today

For immediate assistance, feel free to give us a direct call at (+1) 5103455000 You can also send us a quick email at info@sfxpcb.com