Four Reasons To Use Through Hole Assembly In PCB Design
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Four Reasons To Use Through Hole Assembly In PCB Design

The “electronics revolution” has changed the lives of humans tremendously. Electronic gadgets are now an indispensable part of human life, and due to this rising demand for electrical/electronic devices, PCB industries are flourishing. With the advancement in the age of technology, these gadgets are becoming more compact. Hence, to accommodate this trend, PCBs are also being manufactured in various compact sizes.
As the circuit boards are becoming thinner than ever before, the ultra-small size poses difficulty in mounting the various components on it. This mounting occurs mostly via two techniques. The first one is Plated Through-Hole Technology (PTH). The other common method is Surface Mount Technology (SMT).
Of these two methods, the Through Hole Pcb Assembly process has proven to be quite resilient for the PCB mounting process. In this method, via the holes that are pre-drilled on the circuit board, the leads are threaded together to make a criss-cross pattern connecting it to the other side. Hence the through-hole components are either hand soldered or wave soldered onto the bare board. In the SMT method, the electrical components are mounted directly onto the surface of the PCB. It either has smaller leads or no leads. Because of its small lead spaces, it makes the repair process quite difficult. Manual prototype assembly is also quite difficult on such boards as compared to the Through-hole mounting technology.
PTH is one of the most common methods used for the mounting process. It is used to mount various components like microchips, capacitors, and resistors on the bare board. Of the various reasons for the popularity of the Through-hole assembly method, here is a list of four reasons to use through-hole assembly in PCB design.
1) Simple And Easy Prototyping
One of the most common reasons to use Through-hole assembly during the circuit board fabrication is because it gives faster prototyping than the surface mount technology. In PTH, the electrical components can be mounted by hand or wave soldering. Also, you can breadboard (construction base for electronics prototyping) the circuit board design before you set on to fabricate the board.
2) Excellent Physical Connections
In Plated Through-hole Technology, the mounting between the electrical components on the circuit board is strong. Hence, the connectors, capacitors or transformers, semi-conductors, and other such components that need to resist mechanical stress, high power, or voltages can be mounted easily.
3) High Power Tolerance
PTH can meet the high power requirements easily. This mounting technology can hold itself against mechanical or environmental stress. Because of this property, it is used in electronics products in the aerospace and military industries.
4) Component Durability
Because of the strong physical bonds, this method is used widely for mounting processes. The electrical components are tightly soldered on both sides of the printed circuit boards, which makes the PCB durable.
To Conclude:
Using the Plated Through-hole Technology in the manufacturing of PCB, the demands of the mounting process can be easily met. The electrical components are soldered easily through the drilled holes on the bare boards. Hence, it is used widely in building PCB assemblies for different industrial products.