Technology
PCB hole sealing
Copper plated through-hole closure Copper plated through-hole closure

Unlike filling the through holes with conductive or non-conductive materials first, the through holes are completely sealed with copper. However, due to the difficulty and high cost of production, this through-hole plug is no longer commonly used.

advantage:

Excellent heat dissipation or transfer performance

Due to higher thermal conductivity and stronger current carrying capacity

100% prevention of solder leakage and dust/liquid entering through holes in SMT process

Very good stability and reliability

Disadvantages:

High cost

Imitation of via size and copper thickness

Low demand

  • What are the common types of through-hole plugsWhat are the common types of through-hole plugs
  • Cover the via with LPI solder maskCover the via with LPI solder mask
  • Seal the through-hole with a solder mask layerSeal the through-hole with a solder mask layer
  • Non-conductive through-hole plugNon-conductive through-hole plug
  • Conductive hole plugConductive hole plug
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