PICA white paper
The Essential Guide to PCB Via Protection
Strategies and Standards for Reliable PCB Assemblies
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PDFIPC-4761 guidance
Design for lasting reliability
Choose the right protection for every via.
Written by Tyson Mortimer, this guide explains how via-protection choices affect reliability, manufacturability, thermal performance, density, and cost across PCB and flex-circuit applications.
- 01Compare protection methods
Review unprotected, tented, plugged, epoxy-filled, and copper-filled via options.
- 02Apply IPC-4761 guidance
Match protection strategies to environmental, mechanical, density, and reliability requirements.
- 03Improve HDI integration
Learn how filled and cap-plated vias support SMT pads, heat transfer, and space optimization.
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