Glossary

Here you can find an explanation of some terms that may be used on this site

Cap(s)

Short for "Capacitor"

PCB

Stands for "Printed Circuit Board' which is the board that parts are typically mounted to in devices

RefDes

Short for "Reference Designation" which is an identification used to mark the location of each part on a PCB. These are also used for schematics and BOMs to reference which parts should be put at a location on the PCB.

RefDes' are usually denoted with a letter and a number. The letters describe the kind of part that goes there. Some common examples:

• C - Capacotor
• R - Resistor
• L - Inductor
• Q - A transistor or mosfet
• U - ICs like processors, RAM, or ROMs

BOM

Stands for "Bill of Materials" which is a list of parts for a device or PCB

IC or Chip

Stands for "Integrated Circuit" which is a semiconductor device that combines the functionality of multiple other parts into one to perform more complicated tasks.

SMD or SMT

Stands for "Surface Mount Device" or "Surface Mount Technology" which is a mounting technology for Part Footprints

THT

Stands for "Through Hole Technology" which is a mounting technology for Part Footprints

DIP

Stands for "Dual Inline Package" which is a mounting technology for Part Footprints

BGA

Stands for "Ball Grid Array" which is a mounting technology for Part Footprints

QFP

Stands for "Quad Flat Package" which is a mounting technology for Part Footprints