What is the difference between plated through hole and non-plated through hole?

These holes are called through holes since they are drilled from the top to the bottom of the board. Non-Plated/ Unplated Through Holes or NPTHs have no copper plating on the inner walls and thus provide no electrical properties.

What is a non-plated through hole?

Non-plated through holes are simple features that are either drilled or milled through your circuit board, which expressly do not receive a plating of conductive copper. Typical uses of NPTH features are mounting holes to allow screws or other fasteners to pass through your board.

What is plated through hole in PCB?

Through holes on a PCB refer to a hole that is drilled from the top and through to the bottom of a PCB, these can be plated (PTH) or non-plated (NPTH). Through holes became plated-through holes (PTH) in order for the components to make contact with the required conductive layers.

What is a plated thru hole?

The most common embedded component in a printed circuit board (PCB) is a plated through hole (PTH), which serves as a conductive conduit from one layer of the board to another. They are created by drilling a hole in the board and plating the inside with a conductive material, usually copper.

Does a hole have to go all the way through?

Depending on the material and the placement, a hole may be an indentation in a surface (such as a hole in the ground), or may pass completely through that surface (such as a hole created by a hole puncher in a piece of paper). In engineering, a hole may be blind or through if it is partial or complete depth.

Should PCB mounting holes be plated?

Mounting holes should generally be plated as this allows mounting with metal screws. Because floating bits of metal can be sources of EMI, the mounting holes should be connected to some ground net (earth (PE), signal ground (SGND), a grounded enclosure, etc.).

Why the holes vias in PCB need to be plated?

As surface mount technology becomes increasingly prevalent, the majority of the plated through holes on most modern PCB designs end up being vias. The main purpose of any PCB via is to provide a conductive path for passing an electrical signal from one circuit layer to another by means of a plated hole wall.

What is the difference between through-hole and surface mount soldering?

Through-hole mounting is the process by which component leads are placed into drilled holes on a bare PCB. Whereas SMT components are secured only by solder on the surface of the board, through-hole component leads run through the board, allowing the components to withstand more environmental stress.

What is THT and SMD?

An SMD is an electronic component that can be found on a Printed Circuit Board (PCB). It is designed to be mounted directly on PCB. Through-hole-technology (THT) involves inserting leads of components into drilled holes in the PCB. Soldering a Dual-in-line package (DIP) IC on the PCB is an example of THT.

What is SMT and THT?

SMT is the method of placing components (like an SMD) on the board. Through-hole-technology (THT) involves inserting leads of components into drilled holes in the PCB. Leads can then be soldered onto pads or lands on the solder side of the board, usually with a simple soldering iron by hand or wave soldering process.