Surface-mount technology facts for kids
Surface-mount technology (SMT) uses electronic devices that are made to be placed directly onto the surface of printed circuit boards (PCBs).
Examples of surface-mount devices are resistors, capacitors, LEDs and integrated circuits. Surface mounted devices are generally smaller than those used in the older through-hole technology, which need longer leads and holes in the circuit board.
Images for kids
Surface-mount components on a USB flash drive's circuit board. The small rectangular chips with numbers are resistors, while the unmarked small rectangular chips are capacitors. The capacitors and resistors pictured are 0603 (1608 metric) package sizes, along with a very slightly larger 0805 (2012 metric) ferrite bead.
Removal of surface-mount device using soldering tweezers
Surface-mount technology Facts for Kids. Kiddle Encyclopedia.