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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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EM342-RTR датащи(PDF) 131 Page - Silicon Laboratories |
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EM342-RTR датащи(HTML) 131 Page - Silicon Laboratories |
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131 / 143 page  EM342 Rev 1.0 131 19. Top Marking Figure 19.1 shows the part marking for the EM342 Series. The circle in the top corner indicates Pin 1. Pins are numbered counter-clockwise from Pin 1 with 12 pins per package edge. Figure 19.1. Part Marking for EM342 Table 19.1. 48-Pin QFN Top Marking Explanation Mark Method: Laser Pin 1 Marking: Circle = 0.40 mm Diameter (Top-Left Justified) Line 1 Marking: Logo and Device Part Number Right Justified Silicon Labs logo . Line 2 Marking: TTTTTT = Mfg Code YY=Year WW-Work Week Manufacturing Code from the Assembly Purchase form. Assigned by the Assembly House. Corre- sponds to the year and work week. Right Justified Line 3 Marking: Circle = 1.3 mm Diameter Center Justified Country of Origin ISO abbreviation Right Justified “e3” indicates Sn solder finish. TW |
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