A print circuit board (PCB) plays a vital role in the quality and usability of electrical components, as its design ultimately impacts the component’s functionality. Essentially, Through-Hole Technology (THT) and Surface Mount Technology (SMT) are the most prevalent techniques for manufacturing PCBs. In this blog, we will discuss the advantages of through-hole technology and why it makes a popular method in manufacturing electronics.
What is Through-Hole Technology?
It is a mounting method where component leads and chips are inserted through holes drilled onto the bare print circuit board. The procedure can be carried out both manually as well as with automated machines. Furthermore, the pins are soldered from the bottom side onto the pads on the opposite side of the board.
The technology was quite popular back in the 1950s for producing second-gen computer boards, which started as one-sided, and eventually, multi-layer boards became widespread. However, it was expected to get obsolete with the advent of SMT post the late 80s. Yet, through-hole technology stands firm to the test of time because of its numerous advantages and dependability.
Through-Hole Technology Components
Ideally, there are two types of through-hole technology components, and both have their distinct benefits. Here we quickly discuss the same:
- Axial Lead Components (ALC)
ALC features single or multiple leads designed to exit from one side of the components. When assembling on the circuit board, both ends get placed through different holes and are preferable for a compact fit.
- Radial Lead Components (RLC)
RLD usually projects outward from the body and is utilised in high-density boards. Since the component can stand out from the circuit board, it saves the axial space.
Advantages of Through-Hole Technology
Despite so many other technologies thriving in the market, through-hole technology remains to offer impressive advantages. It is also desirable over surface mount technology by various PCB manufacturers. Why?
Through-hole technology is durable and practical when it comes to producing a secure connection in between layers. Regardless of the level of environmental stress you expose the board to, one manufactured with through-hole technology will firmly remain in contact. It makes through-hole technology PCBs most suitable for applications that necessitate withstanding extreme (variable) conditions. Since through-hole components are reinforced when they run through the board compared to surface mount techniques that are only soldered, the PCBs thus manufactured are reliable and enduring.
- Stronger Mechanical Bonds
Heavy or bulky compositions that demand robust mechanical bonds do well with through-hole technology. However, PCBs manufactured with the through-hole technique are expensive and reserved mainly for components needing advanced mounting strength. Components like transformers, or plug connectors that require a lot more muscle for reinforcement are usually produced with through-hole technology.
Design engineers and manufacturers can replace or adjust PCB capabilities manually, which isn’t as straightforward with surface mount boards. The former also uses breadboard sockets that make prototyping much more convenient. However, the technique won’t suit ultra-compact designs or high-speed designs that demand minimal stray capacitance, even in the prototyping phase.
High-Quality Printed Circuit Board Services in Perth
At Advanced Technology & Manufacturing (AT&M), we are one of Perth’s premier and fully integrated PCB manufacturing companies. No matter the size and specs of your project, we can take your product from prototyping to production effortlessly. With our 25+ years of experience, we also have cost-effectively and efficiently delivered turnkey PCB assembly services to add value to every client’s business. Our personalised services, attention to detail, and quick responses ensure you receive products designed with precision and the highest quality standards.
Contact us today and discover why AT&M is the most dependable, knowledgeable, and reputable PCB manufacturing and assembly services provider in Perth.