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  2. IC power-supply pin - Wikipedia

    en.wikipedia.org/wiki/IC_power-supply_pin

    Using these conventions, in a common-emitter amplifier, the ratio v c /v b represents the small-signal voltage gain at the transistor, and v c /i b the small-signal trans-resistance, from which the name transistor is derived by contraction. In this convention, v i and v o usually refer to the external input and output voltages of the circuit or ...

  3. TO-8 - Wikipedia

    en.wikipedia.org/wiki/TO-8

    Hybrid integrated circuit (National Semiconductor LH033CG) in a variant of the TO-8 package with 12 leads In electronics, TO-8 is a designation for a standardized metal semiconductor package . TO in TO-8 stands for "transistor outline" and refers to a series of technical drawings produced by JEDEC . [ 1 ]

  4. Printed circuit board - Wikipedia

    en.wikipedia.org/wiki/Printed_circuit_board

    Not to be confused with Printed electronics. For other uses, see PCB (disambiguation). "PC board" redirects here. For the mainboard of personal computers, see Motherboard. "Panelization" redirects here. For the page layout strategy, see N-up. Printed circuit board of a DVD player Part of a 1984 Sinclair ZX Spectrum computer board, a printed circuit board, showing the conductive traces, the ...

  5. Reference designator - Wikipedia

    en.wikipedia.org/wiki/Reference_designator

    A reference designator unambiguously identifies the location of a component within an electrical schematic or on a printed circuit board.The reference designator usually consists of one or two letters followed by a number, e.g. C3, D1, R4, U15.

  6. TO-5 - Wikipedia

    en.wikipedia.org/wiki/TO-5

    In electronics, TO-5 (Transistor Outline 5) is a designation for a standardized metal semiconductor package used for transistors and some integrated circuits. The TO element stands for "transistor outline" and refers to a series of technical drawings produced by JEDEC . [ 1 ]

  7. TO-220 - Wikipedia

    en.wikipedia.org/wiki/TO-220

    The "TO" designation stands for "transistor outline". [2] TO-220 packages have three leads. Similar packages with two, four, five or seven leads are also manufactured. A notable characteristic is a metal tab with a hole, used to mount the case to a heatsink, [3] allowing the component to dissipate more heat than one constructed in a TO-92 case.

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