Contents
What are plated holes?
Plated Trough Holes (PTH) The main characteristic of this type of holes is that, during the manufacturing process, after drilling the boards a thin copper layer is plated onto the walls of the holes, providing them with electrical conductivity.
What are the advantages of a plated through hole PCB?
Through-hole Technology: Advantages and Disadvantages
| PRO | CON |
|---|---|
| Easier for prototyping | Higher board cost due to drilling |
| Strong physical connections | Takes up more board real-estate |
| Heat tolerance | PCB assembly process is more involved |
| Power handling capability | Slower speeds |
What is Npth in PCB?
NPTH (Non Plating Through Hole) refers to a hole without copper in the borehole wall. It is generally used as the positioning hole and screw hole of PCB. Another relatively small PTH (Plating Through Hole), also known as “Via”, can be used to connect and conduct wiring between different layers in PCB.
What kind of holes are in a PCB?
In PCB manufacturing, Through Holes are drilled from the top and go completely through the bottom of a PCB, these holes can be plated (PTH) or non-plated (NPTH). of a printed circuit board or flexible printed circuit, these can be plated (PTH) or non-plated (NPTH).
How are PTH holes treated on a PCB?
PTH holes with copper pads will be treated as “plated holes on the board edge” or “Contour Cut PTH drills” and should be clearly indicated in the mechanical layer. NPTH holes without copper pads will be treated as part of the board outline.
Do you need ground for plated PCB mounting holes?
Grounded PCB mounting holes can reduce EMI. Connecting plated mounting holes to chassis ground is a best practice, but it isn’t the only best practice to adhere to. To ensure that your device is protected, your chassis ground must be connected to a proper earth ground.
How big is a 33mil PCB drill hole?
Drill size of 33mil is converted to 0.8382mm and then rounded to 0.85mm. Please provide separate drill files for plated (PTH) and non-plated (NPTH) holes if possible. If this is not possible it is important to specify different tools for PTH and NPTH holes and mark clearly which are for PTH and which are for NPTH.