INDUSTRY COMPONENT

Via

A conductive pathway through insulating layers in printed circuit boards for electrical connections between layers.

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Component Specifications

Definition
A via is a plated-through hole in a printed circuit board (PCB) that provides electrical connectivity between different conductive layers. It consists of a cylindrical hole drilled through the PCB substrate, with electroplated copper forming a conductive lining that connects the copper traces on different layers. Vias are essential for creating multi-layer PCB designs, enabling complex routing in modern electronic devices.
Working Principle
Electrical conduction through a plated metal cylinder that bridges conductive layers separated by insulating dielectric material, allowing signals and power to pass vertically through the PCB stackup.
Materials
Copper plating (typically 1-2 oz/ft²), with possible nickel/gold finish for surface protection; substrate: FR-4, polyimide, or other PCB dielectric materials.
Technical Parameters
  • Diameter 0.1-0.5 mm
  • Resistance < 50 mΩ
  • Aspect Ratio Up to 10:1
  • Current Capacity 1-3 A
  • Plating Thickness 25-50 μm
Standards
IPC-6012, IPC-A-600, ISO 9001

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Via.

PCB via plated through hole interconnect via via technology via reliability via specifications via manufacturing Via Via in Computer, Electronic and Optical Product Manufacturing

Parent Products

This component is used in the following industrial products

Interconnect Matrix

A structured network of conductive pathways within a logic gates array that enables signal routing and electrical connections between individual logic gates.

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Engineering Analysis

Risks & Mitigation
  • Thermal stress failure
  • Plating voids
  • Signal integrity degradation
  • Manufacturing defects
FMEA Triads
Trigger: Thermal cycling during operation
Failure: Via barrel cracking
Mitigation: Use compatible CTE materials, adequate plating thickness, and thermal relief pads
Trigger: Poor plating process
Failure: Incomplete conductivity
Mitigation: Implement strict process controls, regular inspection, and quality testing

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±0.05 mm diameter, ±0.1 mm position
Test Method
Cross-section microscopy, electrical continuity testing, thermal cycling tests

Buyer Feedback

★★★★☆ 4.6 / 5.0 (30 reviews)

"As a professional in the Computer, Electronic and Optical Product Manufacturing sector, I confirm this Via meets all ISO standards."

"Standard OEM quality for Computer, Electronic and Optical Product Manufacturing applications. The Via arrived with full certification."

"Great transparency on the Via components. Essential for our Computer, Electronic and Optical Product Manufacturing supply chain."

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Frequently Asked Questions

What are the main types of vias in PCB design?

Through-hole vias (connect all layers), blind vias (connect outer to inner layers), buried vias (connect only inner layers), and microvias (for high-density interconnect).

What causes via failure in PCBs?

Thermal stress from coefficient of thermal expansion mismatch, plating voids, drill misalignment, and electrochemical migration.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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Vertical Support Column Vias