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Presario 1700 Series
Models: XL260, XL261, XL262, XL264, XL265, XL266, XL274, XL275, XL360, XL361, XL362, XL363, XL364, XL365, XL366, XL367, XL368, XL369, XL370, XL371, XL372, XL373, XL374, XL375, XL376, XL377, and XL378
Electrostatic Discharge
A sudden discharge of static electricity from a finger or other conductor can destroy
Networks built into many integrated circuits provide some protection, but in many cases, the discharge contains enough power to alter device parameters or melt silicon junctions.
Generating Static
The table below shows activities that generate static electricity and the associated electrostatic voltage level.
Typical Electrostatic Voltages
Activity | Relative Humidity |
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| 10% |
| 40% |
| 55% |
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Walking across carpet | 35,000 | V |
| 15,000 | V |
| 7,500 | V |
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Walking across vinyl floor | 12,000 | V | 5,000 | V | 3,000 | V | ||
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Motions of bench worker | 6,000 | V |
| 800 | V |
| 400 | V |
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Removing DIPS from plastic tubes | 2,000 | V | 700 | V | 400 | V | ||
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Removing DIPS from vinyl trays | 11,500 | V |
| 4,000 | V |
| 2,000 | V |
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Removing DIPS from styrofoam | 14,500 | V | 5,000 | V | 3,500 | V | ||
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Removing bubble pack from PCBs | 26,000 | V |
| 20,000 | V |
| 7,000 | V |
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Packing PCBs in | 21,000 | V | 11,000 | V | 5,000 | V |
Note: 700 Volts can degrade a product.