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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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TMPR4955AF датащи(PDF) 33 Page - Toshiba Semiconductor |
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TMPR4955AF датащи(HTML) 33 Page - Toshiba Semiconductor |
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33 / 168 page  3 General Safety Precautions and Usage Considerations 3-13 (1) Using a soldering iron Complete soldering within ten seconds for lead temperatures of up to 260°C, or within three seconds for lead temperatures of up to 350°C. (2) Using medium infrared ray reflow • Heating top and bottom with long or medium infrared rays is recommended (see Figure 3). Long infrared ray heater (preheating) Medium infrared ray heater (reflow) Product flow Figure 3 Heating top and bottom with long or medium infrared rays • Complete the infrared ray reflow process within 30 seconds at a package surface temperature of between 210°C and 240°C. • Refer to Figure 4 for an example of a good temperature profile for infrared or hot air reflow. 210 30 s or less Time (s) 60-120 s (°C) 240 160 140 Figure 4 Sample temperature profile for infrared or hot air reflow (3) Using hot air reflow • Complete hot air reflow within 30 seconds at a package surface temperature of between 210°C and 240°C. • For an example of a recommended temperature profile, refer to Figure 4 above. (4) Using solder flow • Apply preheating for 60 to 120 seconds at a temperature of 150°C. • For lead insertion-type packages, complete solder flow within 10 seconds with the temperature at the stopper (or, if there is no stopper, at a location more than 1.5 mm from the body) which does not exceed 260°C. |
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