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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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L9177ATR датащи(PDF) 48 Page - STMicroelectronics |
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L9177ATR датащи(HTML) 48 Page - STMicroelectronics |
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48 / 55 page  19. For Symbols, Recommended Values and Tolerances see Table below: Symbol Definition Notes aaa The tolerance that controls the position of the terminal pattern with respect to Datum A and B. The center of the tolerance zone for each terminal is defined by basic dimension e as related to Datum A and B. For flange-molded packages, this tolerance also applies for basic dimensions D1 and E1. For packages tooled with intentional terminal tip protrusions, aaa does not apply to those protrusions. bbb The bilateral profile tolerance that controls the position of the plastic body sides. The centers of the profile zones are defined by the basic dimensions D and E. ccc The unilateral tolerance located above the seating plane where in the bottom surface of all terminals must be located. This tolerance is commonly know as the “coplanarity” of the package terminals. ddd The tolerance that controls the position of the terminals to each other. The centers of the profile zones are defined by basic dimension e. This tolerance is normally compounded with tolerance zone defined by “b”. 20. Notch may be present in this area (MAX 1.5 mm square) if center top gate molding technology is applied. Resin gate residual not protruding out of package top surface. L9177A TQFP 10x10 64L exposed pad down package information DS12175 - Rev 5 page 48/55 |
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