Home  Sources  Part descriptions  Electrical parts  Passive components  Semiconductors  Integrated circuits  Packages  Mechanical parts  Misc. parts Assembly descriptions   BEAM Pieces is a BEAM Reference Library site.		Electrical part packages The shapes of things to come Name Diagram Description T0-92 This package looks like a little "squished" plastic cylinder, with 3 leads. 1381* ICs come in this package, as do many transistors. T0-220 This package has a thin metal backing for heat rejection (basically, it's a radiator). It's used, as you might suspect, for components that need to reject heat. We'll just see it used for voltage regulators like the 78M05. DIP -- Dual in-line package (image courtesy of Solarbotics) DIPs are used for many "medium complexity" ICs. They have (as the name would suggest) two (dual) rows (in-line) of pins -- up to 20 pins total for the chips we'll be using. You can either solder directly to these pins, or plug your DIP IC into a socket, and solder to the socket's pins (use of a socket is generally preferred for a number of reasons). A DIP's pins are all numbered in a counter-clockwise fashion (a convention dating back to vacuum tubes), like this: For more information... Craig Maynard has a nice page on IC packages here. Manufacturers are also good sources of IC package information -- Oki has an exhaustive page here, while Hitachi has a more-concise one here.
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