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High-Speed Priority IPC Class 3

10-Day 4-Layer PCBA
Professional Pledge

Precision-engineered high-frequency PCB manufacturing and turnkey assembly services designed for 10Gbps+ signal integrity.

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24h

Fast Prototype

30+

Layer Capacity

10Gbps+

Signal Integrity

High Speed PCB Manufacturing

High-Performance
Speed & Precision Engineering

Specialized in high-frequency signal transmission (≥50MHz), Topfast delivers mission-critical PCB solutions for 5G, Computing, and Aerospace applications.

Ultra Multi-Layer

Specialized up to 30+ Layers

HF Materials

Rogers, Teflon, Isola IS620

Blind/Buried Vias

Precision Laser Drilling

10Gbps+ Ready

Full SI/PI Analysis Logic

Express Turnaround

24h Prototype Service

Global Standards

UL, ISO9001, RoHS Compliant

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Why Topfast for High-Speed?

High-Frequency

≥50MHz signals with ultra-low loss substrate control.

Multi-Layer

Complex 30+ layer stacking with micron-level alignment.

EMI Shielding

Optimized isolation and interference resistance design.

Thermal Logic

High-efficiency heat dissipation for power-intensive boards.

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High-Speed PCB
Signal Integrity 100% Guaranteed
Material Engineering

Key Parameters of High-Speed Materials

Critical specifications verified for ultra-low loss signal integrity.

01

Dielectric Constant (Dk)

Affects signal propagation speed and impedance control across frequency bands.

Target Range 2.2 – 4.5
  • Reduces signal phase distortion
  • High stability < 1% @10GHz
02

Loss Tangent (Df)

Determines the amount of signal energy absorbed by the substrate material.

HF Target < 0.005
  • Minimizes insertion loss
  • Critical for 25Gbps+ signals
03

Glass Transition (Tg)

The critical point where the resin changes from rigid to plastic state.

Industrial Grade > 170°C
  • Prevents via cracking & delamination
  • Ensures thermal reliability
04

Thermal Expansion (CTE)

Coefficient of expansion at Z-axis during thermal cycling processes.

Threshold < 50ppm
  • Matches copper bonding energy
  • Reduces stress on blind vias

Material Performance Matrix

Comparative analysis of substrate properties for high-frequency signal integrity.

Material Type
Leading Example
Dk @10GHz
Df @10GHz
Ideal Applications
Cost Ref.
Standard FR-4
Isola 370HR
4.3
0.020
Digital (< 1Gbps)
Economy
Mid-Loss FR4
Megtron 6
3.7
0.008
5Gbps / IoT
Moderate
PTFE-Based
Rogers RO3003
3.0
0.0013
mmWave (77GHz)
Premium
Ceramic-Filled
Rogers RO4350B
3.48
0.0037
5G / 25Gbps
Premium
LCP (Liquid Crystal)
DuPont Teflon
2.9
0.002
Flex / 100GHz+
Ultra High

Hybrid Process Matrix

Advanced manufacturing sequence for high-frequency signal integrity.

01

Material Preparation

  • Substrate: Rogers RO4350B / Duroid
  • Copper: HVLP Ultra-Low Profile
Dk Tester Verification Required
02

Inner Layer Imaging

  • Line/Space: 3/3 mil Ultra-Fine
  • Process: LDI Laser Direct Imaging
Impedance Control: ±7% Tolerance
03

Lamination Process

  • Temp: 180±5℃ Controlled
  • Shift: Layer Shift ≤ 50μm
Resin Flow Monitoring Enabled
04

Laser Drilling

  • Hole Size: 0.1mm - 0.3mm
  • Accuracy: ±25μm Position
CO₂/UV Hybrid Laser System
05

Surface Finish

  • Process: ENIG / Immersion Silver
  • Au Thickness: 0.05-0.1μm (Uniform)
Optimized for High-Frequency Conductivity
06

Final Quality Inspection

  • Standard: IPC-6012D Class 3
  • X-Ray: 3D AXI for Blind Vias
TDR Test: Impedance up to 40GHz
Turnkey Solutions

Precision Assembly Capabilities

SMT Technology

Placement Accuracy
±25μm @10σ
Component Range
0201 to 150mm²
Min. Pitch
0.30mm (IC)

BGA Assembly

Package Size
Up to 74×74mm
Min. Ball Pitch
0.2mm (8mil)
Inspection Mode
3D AXI / 5μm Res

Through-Hole

Soldering Mode
Selective & Conventional
Max Board Width
450mm Process
Component Height
Top Max 120mm
IPC-A-610 Class 3
ISO 9001:2015
IATF 16949 Ready
UL Listed

Seeking medical or aerospace grade assembly? Let’s discuss your technical needs.

Request Design for Assembly (DFA) Report

High-Speed PCB Applications

Advanced Solutions for Next-Generation Technologies

5G Communication

Communication

  • 5G/6G Base Stations
  • Optical Modules
  • Millimeter Wave Radar
Up to 77GHz Dk 3.0-3.5
Server Computing

Computing

  • Servers
  • Network Switches
  • AI Accelerator Cards
25Gbps+ Signals HDI Designs
VR Headset

Consumer Electronics

  • Premium Routers
  • VR/AR Devices
  • 8K Displays
0.3mm Pitch Ultra-Thin
Autonomous Vehicle

Automotive

  • Autonomous Sensors
  • Vehicle Networks
  • ADAS Systems
-40°C to 125°C ASIL-D

Start Your High-Speed PCB Project

If you're seeking professional high-speed PCB design and manufacturing services, contact us today for a customized quote.

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