What is SMT soldering?

Surface mount soldering is the process of creating circuits using surface mount technology (SMT) components that are mounted directly onto the surface of printed circuit boards (PCBs). The manufacture of PCB circuits via surface mount soldering was a key breakthrough that makes this possible.

What will happen if we take SMT components in through-hole design process?

Thru-Hole Mounting Disadvantages There are also some downsides to using the thru-hole process. Thru-hole components are larger than surface mount devices and take up more space, which increases costs because the boards need to be larger. This difference makes thru-hole technology unsuitable for high-density boards.

Why is there a thru hole in a SMT board?

The leads are then soldered to the opposite side of the board to keep the component in place. Thru hole technology is considered legacy by some manufacturers, but WORLD electronics recognizes that some clients prefer the simplicity and ease of rework that thru hole allows.

Which is best thru hole or SMT for PCBs?

WORLD offers both SMT and thru-hole technologies for mounting components to our PCBs, whichever our clients’ specifications require and can build to IPC 610-2 or -3. Our PCB through-hole technology capabilities include auto insertion, wave soldering, and selective soldering.

What are the general requirements for through hole soldering?

GENERAL REQUIREMENTS Components are installed per engineering documentation and are parallel to, and in contact with, the board surface. Component and board markings are clear and legible. Component leads exhibit proper bend radii and stress relief. Solder fillets are smooth and shiny with concave profiles. PREFERRED 100% SOLDER FILL (PTH)

How big of a hole can be soldered through a PWB?

Leads terminated straight through the PWB shall extend 0.5 mm (0.020 in.) to 2.29 mm (0.0900 in.) beyond the pad surface. Leads may be bend up to 30° from the vertical plane to retain the part during soldering.