IBE enables the world’s best brands. Through our unrivalled customer-centric approach, we partner with leading companies in numerous markets to deliver solutions for their most complex challenges.


IBe Industry Building, ShenZhen, China



PCB/PCBA knowledge

Through hole technology is the cycle by what part leads are put into penetrated holes on an uncovered PCB. The cycle was standard practice until the ascent of surface mount technology during the 1980s, when it was normal to totally transition away from through-hole. However, notwithstanding a serious drop in prominence throughout the long term, Through Hole technology has demonstrated versatile in the time of SMT, offering various benefits and specialty applications: to be specific, unwavering quality.

Table of Contents

What is through hole technology?

What is through hole technology

Through hole was the strategy that reduces the highlight point collecting technique. A mounting methodology utilizes the leads on the parts that get embedded into the PCBs. These are the parts that are welded consequently by machines or physically by hands. In this manner, the procedure is typically utilized for heavier parts. Also, this strategy is good for the model PCB as it’s economical and sensible.

Types of through holes leads

There are two kinds of through hole leads. One is axial and second is radial lead.
  • Axial leads go through a part in an orderly fashion, with each finish of the lead wire leaving the part on one or the flip side. The two closures are then positioned through two separate holes in the board, permitting the part to fit nearer, compliment fit. Spiral lead parts, then again, project from the board, as its leads are situated on one side of the part. Both through hole part types are “twin” lead parts, and both enjoy their unmistakable benefits.
  • While axial lead parts are utilized for their coziness to the board, radial leads possess less surface region, improving them for high thickness PCB.
  • By and large, axial lead arrangement might come as carbon resistors, electrolytic capacitors, wires, and light-discharging diodes (LEDs). Radial lead parts are accessible as earthenware plate capacitors.

What are the benefits of a through hole technology?

What are the benefits of a through hole technology

Through hole technology between a part and a PCB makes a more grounded association than SMT, where parts are gotten exclusively to the outer layer of the board.

Further, through hole technology leads safeguard the electronic part from warm and mechanical pressure by engrossing it straightforwardly; SMT doesn’t offer a similar degree of security.

At last, no matter what the fastening necessities, through hole technology will in general be better for testing and prototyping in light of the fact that it is simpler to physically eliminate and supplant parts on the PCB.

  • Through hole technology gatherings are profoundly impervious to mileage; because of the huge bind joints that stretch out all through the width of the actual board.
  • This makes through hole technology PCB sheets the principal level of need for military and aviation applications, where the gadget might experience the ill effects of mechanical pressure and vibrations.
  • Through hole technology parts are additionally simple to trade out, making them ideal for models and testing.
  • Through hole technology offers more grounded mechanical bonds rather than SMTs; where, the part parts are in basic contact with the board. This makes through hole technology parts ideal for high electrical/mechanical pressure conditions like connectors or transformers.

Where are constraints of through hole technology?

Despite the fact that Through hole innovation remains as a special and tempting innovation, it actually has a couple of downsides even after surface mount. The innovation isn’t reasonable for higher speed parts that could require a little wanderer in capacitance and inductance for its wire leads.

When you settle on the through hole innovation, a great deal of your board space should support the wire leads’ cabin, causing you to need to put resources into a bigger PCB. The greater PCB decreases the quintessence of limiting all the wiring and slicing the board to a for the most part useful size.

Differences among surface mount technology, surface mount device, through hole technology?


  • SMDs are parts producers put on PCB through SMT. Producers utilize bind glue to put SMDs on the exposed board. Surface mount gadgets highlight more limited drives that empower a more noteworthy electrical association. THT includes binding through hole parts onto a circuit board by wave soldering. The part leads go through the bored holes of the PCB.
  • Through hole technology offers more grounded mechanical holding. This innovation is great for electronic gadgets liable to experience the ill effects of mechanical pressure. THT makers use hand and welding or wave binding for the THT interaction.
  • SMDs are more modest than the parts in THT. SMD parts can be so little to be plainly seen by the unaided eye. Because of the size of SMDs, they save more space on the exposed circuit board. SMD parts depend on weld balls to empower further developed holding ability.
  • THT gives more mechanical bonds than SMT. In any case, the additional boring in THT makes it more costly to make the circuit board. Thusly, THT is great for additional cumbersome parts. For example, electrolytic capacitors need additional mounting quality to endure pressure.

Where can through hole technology be used?

Where can through hole technology be used

Through hole technology is great for items that require high unwavering quality significantly under elevated degrees of natural and mechanical pressure as well as high voltage, power and intensity conditions. Huge units are likewise bound to utilize through hole innovation since diminishing costs through more modest parts is to a lesser degree a worry.

Moreover, the through hole procedure is helpful for testing and prototyping in light of the fact that you can moderately effectively change and supplant leads physically, empowering you to attempt different designs.

Transformers, semiconductors, electrolytic capacitors and attachment connectors are probably going to utilize through hole innovation. The military, aviation and modern gear areas frequently use it in view of its unwavering quality and protection from brutal circumstances. Light-radiating diodes, or Drove lights, utilized in open air applications, for example, boards and shows in arenas may likewise utilize through hole innovation due to its capacity to endure outside conditions.

What is the through hole technology process?

Through hole technology gathering has been around for pretty much hundred years (since the 1940s) and has been exhibited to be profoundly dependable, ready to get enormous parts, and keep up with availability notwithstanding high power and high temperatures

1.Placement: For through hole technology, the part leads or pins are embedded through the board.

2.Mistakes and inspection: Any mistakes in situation will be revised here.

3.Wave soldering: For wave patching, one side of the whole board is presented to a wave of bind. As the board crosses the wave, the through-hole parts are fastened at the same time.

Considerations for selecting a through hole technology manufacture

It is generally difficult to pick the perfect manufacturer for a through hole technology. Having fostered the plan for the through hole technology itself, the board should be made and this is regularly embraced by an expert through hole technology manufacturer. Picking the right PCB producer can make the cycle a lot more straightforward, however, some unacceptable ones can prompt a great deal of misery. Some exploration on the different PCB makers is time very much spent, however, it frequently assists with having a few pointers to guide and choices.

  • PCB quality
  • Capacity to meet necessities
  • PCB make cost
  • Materials obtaining
  • Request amounts

IBE Electronics – your through hole technology services provider

IBE Electronics has some expertise close by and wave binding of through hole parts. Our wave welding hardware utilizes a compacted air motion showering framework and no perfect transition which kills the need to clean transition buildup from the circuit board. This forestalls harm to parts and kills the requirement for perilous synthetics.

We have additionally embraced RoHS patching rehearses. Like our leaded wave patching gear, our Nitrogen RoHS consistent wave welding machine utilizes a splash motion framework. This machine produces cleaner, better items asit has extra warming and cooling controls to accomplish appropriate weld joints, which are critical for the RoHS binding interaction.

What’s more, the group at IBE Electronicsis profoundly prepared to the IPC-A-610 Principles. This implies that we are equipped for furnishing our clients with reliably top notch Through HolePCB get together administrations. It is with our scrupulousness as well as our cautious recording and exact translation of client necessities that we can guarantee that our client assumptions are completely met by the eventual outcome.

Assuming you are searching for top notch through hole technology PCB gathering administrations, kindly go ahead and reach out to us. The group at IBE Electronics is glad to help you.

you asked we answer

Yes, it is. These are two fundamental types of constituents utilized in printed circuit boards (PCBs). Surface mount is used more frequently than through hole with strengths of more reliable and less expensive.


Through-hole soldering is the method by which components are mounted to a PCB using physical leads. These leads are hooked through holes drilled into the circuit board. Then they are soldered to the opposite side of the board to keep the component in place.

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.


Because of the capacity to utilize more modest parts and with quicker gathering and less expensive runs it’s not really shocking that SMT is the most widely recognized innovation utilized for present day PCB Get together.

Notwithstanding, Through hole technology actually is expected for ventures where electronic parts might be liable to high intensity or where more grounded associations are expected for dependability like in military and aviation applications.

Around here at the IBE Electronics, we are prepared to give quality through hole technology mount PCB boards. So whether you are searching for the higher intensity perseverance and more grounded associations of through hole technology, we can help.

Leave a comment

Your email address will not be published. Required fields are marked *