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Manufacturing High Current PCBs

requires advanced processes to handle heavy copper, typically ranging from 2oz to over 10oz. A key challenge is the precise etching of thick copper; manufacturers often utilize multi-step etching or horizontal plating technologies to maintain trace accuracy and minimize undercut. To ensure reliable interconnections in thick boards, high-aspect-ratio drilling and via filling with conductive epoxy are essential. Additionally, specialized surface finishes like heavy tin plating or busbar integration are applied to further enhance current-carrying capacity.

Rigorous quality control, including High Current Testing (HCT), is conducted to verify the board's thermal stability and electrical integrity under extreme load conditions.

Home Blog High Current PCB Manufacturing Tech
  1. Copper Pour vs Trace: What 3 Years of PCB Failures Taught Us

    Copper Pour vs Trace: What 3 Years of PCB Failures Taught UsMay/21/2026Real production failure analysis from 50+ power electronics projects. The data surprised us.The Shocking FindingAfter analyzing 47 production PCB failures from 2019-2024, we discovered something unexpected: boards with copper pour failed 62% less often than boards with only discrete...

  2. Heavy Copper vs Standard Copper PCB: Complete Comparison Guide for Engineers

    Heavy Copper vs Standard Copper PCB: Complete Comparison Guide for EngineersMay/20/2026Heavy copper PCBs offer significantly more copper thickness for high-power applications compared to standard PCBsIntroduction: Understanding Copper Weight in PCB DesignWhen designing printed circuit boards, one of the most critical decisions you'll make is choosing the right copper weight...

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