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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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IR3840WM датащи(PDF) 33 Page - International Rectifier |
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IR3840WM датащи(HTML) 33 Page - International Rectifier |
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33 / 34 page  Rev 12.0 PD-97657 IR3840WMPbF 33 Stencil Design • The Stencil apertures for the lead lands should be approximately 80% of the area of the lead lads. Reducing the amount of solder deposited will minimize the occurrences of lead shorts. If too much solder is deposited on the center pad the part will float and the lead lands will be open. • The maximum length and width of the land pad stencil aperture should be equal to the solder resist opening minus an annular 0.2mm pull back to decrease the incidence of shorting the center land to the lead lands when the part is pushed into the solder paste. |
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