Communicate with Supplier? Supplier
Dartin Xin Mr. Dartin Xin
What can I do for you?
Chat Now Contact Supplier
Storm Circuit Technology Ltd
Home > News > HOLES – NPTH – Non Plated Through Hole and PTH – Plated Through Hole
Online Service
Dartin Xin

Mr. Dartin Xin

Leave a message
Contact Now

HOLES – NPTH – Non Plated Through Hole and PTH – Plated Through Hole

2019-08-09

Through-hole technology, also spelled [thru-hole", refers to the mounting scheme used for electronic components that involves the use of leads on the components that are inserted into holes drilled in PCBs and soldered to pads on the opposite side either by manual assembly (hand placement) or by the use of automated insertion mount machines.


Through-hole technology almost completely replaced earlier electronics assembly techniques such as wire wrapping. From the second generation of computers in the 1950s until surface-mount-technology (SMT) became popular in the late 1980s, every component on a typical PCB was a through-hole component.


PCBs initially had tracks printed on one side only, later both sides, then multi-layer boards were in use. Through holes became plated-through holes (PTH) in order for the components to make contact with the required conductive layers. Plated-through holes are no longer required with SMT boards for making the component connections, but are still used for making interconnections between the layers and in this role are more usually called vias.

Previous: What is a HDI PCB?

Next: What is the difference between a Pad and a VIA?

Home

Phone

Skype

Inquiry