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Zig-zag in-line package

From Wikipedia, the free encyclopedia

Zig-zag in-line package
Zig-zag in-line package

The zig-zag in-line package (ZIP) is a packaging technology for integrated circuits. It was intended as a replacement for dual in-line packaging (DIL or DIP). A ZIP is an integrated circuit encapsulated in a slab of plastic with 16, 20, 28 or 40 pins, measuring (for the ZIP-20 package) about 3 mm x 30 mm x 10 mm. The package's pins protrude in two rows from one of the long edges. The two rows are staggered by 1.27 mm (0.05"), giving them a zig-zag appearance, and allowing them to be spaced more closely than a rectangular grid would allow. The pins are inserted into holes in a printed circuit board, with the packages standing at right-angles to the board, allowing them to be placed closer together than DIPs of the same size. ZIPs have now been superseded by surface-mount packages such as the thin small-outline packages (TSOPs), but are still in use. The quad in-line package uses a smilar staggered semiconductor package design.

High-power devices (such as high-voltage op-amp ICs, voltage regulators, and motor driver ICs) are still being manufactured in a package with a zig-zag pinout (and normally screwed onto a heatsink). These zig-zag packages include variations on the TO220 such as "TO220S", "staggered leads TO-220-11", "staggered leads TO-220-15", and HZIP. The trademarks Pentawatt or Hexawatt are also used for chips in multi-leaded power packages like TDA2002/2003/2020/2030 and L200.[1]

As for computers, dynamic RAM ZIP chips are now only to be found in obsolete computers, some of these are:

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This page was last edited on 12 February 2022, at 13:50
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