3 Common Surface Mount Techniques

Capital Equipment Exchange provides top-quality SMT Machines for many industries nationwide. SMT Is one of the most popular ways of attaching components to a printed circuit board (PCB) because SMT is more efficient than other common ways of attaching components.

There are three different kinds of SMT.

  • Type I
  • Type II
  • Type III

Type I Surface Mount Technique

With Type I SMT, all electrical components mounted to a PCB are surface-mounted devices (SMD) on one or both sides of the board.


The PCB is more compact making the circuit more efficient, creating a faster and higher-performing electronic device. Moreover, it allows for multitasking on computers, smartphones, and tablets, among other electronics.

Interference Reduction

If a company chooses to place components on both sides of the circuit board, machines or solderers can connect more components. Along with rapid signal transmission, devices experience less RF interference due to the lack of leads.

Small and Lightweight Designs

Since a PCB created with this method are such compact parts, manufacturers create smaller, sleeker, and lighter-weight electronic designs.

Initial Cost Reduction

Companies can create products faster with Type I SMT because they do not have to drill holes in the circuit board. They also cut back on shipping costs as the products are smaller and lighter.

Type II Surface Mount Technique

In Type II SMT, manufacturers create a PCB with both through-hole components and SMT components. Typically, companies use SMT on the secondary side of the circuit board and use active electronic components on the primary side. Since this is the case, they must use the two different soldering processes.

Manufacturers may use both kinds of assembly because THT still provides many benefits. Mainly, THT produces stronger bonds than SMT. With mechanical stress or force, THT can still perform incredibly well.

Type III Surface Mount Technique

A Type III SMT is similar to Type II, in the sense that it uses both SMT and THT. However, discrete SMD components such as resistors, capacitors, and transistors are only on the second side of the circuit board. When manufacturers place these components and perform trace spacing properly, they can minimize interference.

Moving Forward With SMT

If you are looking for SMT Machines to streamline your manufacturing process, contact Capital Equipment Exchange, based in McHenry, Illinois, to learn more about our products and services today!