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  2. 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.

  3. Via (electronics) - Wikipedia

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

    PCB via current capacity chart showing 1 mil plating via current capacity & resistance versus diameter on a 1.6 mm PCB. In printed circuit board (PCB) design, a via consists of two pads in corresponding positions on different copper layers of the board, that are electrically connected by a hole through the board.

  4. Drill bit - Wikipedia

    en.wikipedia.org/wiki/Drill_bit

    Due to its design, a single bit can be used for drilling a wide range of hole sizes. Some bits come to a point and are thus self-starting. The larger-size bits have blunt tips and are used for hole enlarging. Unibits are commonly used on sheet metal [11] and in general construction. One drill bit can drill the entire range of holes necessary on ...

  5. Through-hole technology - Wikipedia

    en.wikipedia.org/wiki/Through-hole_technology

    The holes are circa 1 mm diameter. Through-hole technology almost completely replaced earlier electronics assembly techniques such as point-to-point construction. From the second generation of computers in the 1950s until surface-mount technology (SMT) became popular in the mid 1980s, every component on a typical PCB was a through-hole ...

  6. JST connector - Wikipedia

    en.wikipedia.org/wiki/JST_connector

    The PCB (wire-to-board) connectors are available in top (vertical) or side (horizontal) entry, and through-hole or surface-mount. Wire-to-board connectors JST series

  7. Printed circuit board - Wikipedia

    en.wikipedia.org/wiki/Printed_circuit_board

    Through-hole (leaded) resistors Through-hole devices mounted on the circuit board of a mid-1980s Commodore 64 home computer A box of drill bits used for making holes in printed circuit boards. While tungsten-carbide bits are very hard, they eventually wear out or break. Drilling is a considerable part of the cost of a through-hole printed ...

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