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Electrical & Electronics Engineering vocabulary · PCB Design and Manufacturing

SMD

Meaning in electrical & electronics engineering, with examples

abbreviationCommon term

In electrical & electronics engineering, SMD means: Short for surface-mount device: a component soldered directly onto pads on the surface of a PCB, without leads going through holes. The technology is called SMT.

In Turkish: SMD, yüzey montaj eleman

How it is used

Used in PCB design and assembly. SMD parts come in package sizes such as 0402, 0603 and 0805 (imperial codes), are placed by pick-and-place machines and are soldered in a reflow oven. The alternative is through-hole (THT) components.

Example sentences

  1. All the passives are 0402 SMD parts, which are hard to solder by hand.

  2. We moved from through-hole to SMD components to make the board smaller.

Common collocations

  • SMD component
  • SMD package
  • SMD assembly
  • SMD resistor
  • reflow soldering
  • PCBShort for printed circuit board: a flat board of insulating material with copper tracks that hold electronic components and connect them to each other.
  • solderTo join metal parts, such as a component lead and a copper pad, by melting a low-temperature metal alloy between them. The alloy itself is also called solder.
  • footprintThe pattern of copper pads, holes and markings on a PCB that matches a component's package, so that the part can be placed and soldered correctly.
  • BOMShort for bill of materials: the full list of parts needed to build a product, with part numbers, quantities, reference designators and approved suppliers.

More terms: PCB Design and Manufacturing

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