| Surface
Mount Devices(SMDs) are high performance miniature components that are directly
soldered on to the lands(pads) of the PCB. SMDs are available in both leaded
and lead less versions. A majority of normal through hole components are
available in SMD version covering integrated circuits, discrete semiconductors,
resistors, multilayer ceramic capacitors, electrolytic capacitors, plastic
film capacitors, tantalum capacitors, inductors, presets, trimpots, fuses,
etc. Though most of the conventional through hole components are available
in SMD form, there are, however, many that have yet to be developed to SMD
size. In such cases it is possible to use a mix of SMDs and through hole
components on the same PCB.
SMDs
are suited to almost every application. They have proved to be better
than conventional components in terms of ruggedness, reliability and size.
SMDs
are packed in tape and reel, tubes, trays, or bulk for convenience of
feeding automatic placement machines.
|
