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2. Reference designator - Wikipedia

   en.wikipedia.org/wiki/Reference_designator

   The reference designator usually consists of one or two letters followed by a number, e.g. C3, D1, R4, U15. The number is sometimes followed by a letter, indicating that components are grouped or matched with each other, e.g. R17A, R17B. The IEEE 315 standard contains a list of Class Designation Letters to use for electrical and electronic ...

3. Printed circuit board - Wikipedia

   en.wikipedia.org/wiki/Printed_circuit_board

   A printed circuit board (PCB), also called printed wiring board (PWB), is a laminated sandwich structure of conductive and insulating layers, each with a pattern of traces, planes and other features (similar to wires on a flat surface) etched from one or more sheet layers of copper laminated onto or between sheet layers of a non-conductive ...

4. List of electronic component packaging types - Wikipedia

   en.wikipedia.org/wiki/List_of_electronic...

   Through-hole technology uses holes drilled through the printed circuit board (PCB) for mounting the components. The component has leads that are soldered to pads on the PCB to electrically and mechanically connect them to the PCB. Three 14-pin (DIP14) plastic dual in-line packages containing IC chips.

5. Via (electronics) - Wikipedia

   en.wikipedia.org/wiki/Via_(electronics)

   A via (Latin, 'path' or 'way') is an electrical connection between two or more metal layers of a printed circuit boards (PCB) or integrated circuit. Essentially a via is a small drilled hole that goes through two or more adjacent layers; the hole is plated with metal (often copper) that forms an electrical connection through the insulating layers.

6. Board-to-board connector - Wikipedia

   en.wikipedia.org/wiki/Board-to-board_connector

   Board-to-board (BTB) connectors are used to connect printed circuit boards (PCB), electronic components that contain a conductive pattern printed on the surface of the insulating base in an accurate and repeatable manner. Each terminal on a BTB connector is connected to a PCB. A BTB connector includes housing and a specific number of terminals.

7. Footprint (electronics) - Wikipedia

   en.wikipedia.org/wiki/Footprint_(electronics)

   Populated (rear) and unpopulated (front) TSOP land patterns on a printed circuit board. A row of through-holes acting as the footprint for a pin header.. A footprint or land pattern is the arrangement of pads (in surface-mount technology) [1] or through-holes (in through-hole technology) used to physically attach and electrically connect a component to a printed circuit board.