전자부품 데이터시트 검색엔진 |
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ADXL377 데이터시트(PDF) 10 Page - Analog Devices |
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ADXL377 데이터시트(HTML) 10 Page - Analog Devices |
10 / 13 page ADXL377 Preliminary Technical Data Rev. PrB | Page 10 of 13 LAYOUT AND DESIGN RECOMMENDATIONS The recommended soldering profile is shown in Figure 5 followed by a description of the profile features in Table 6. The recommended PCB layout or solder land drawing is shown in Figure 6. Figure 5. Recommended Soldering Profile Table 6. Recommended Soldering Profile Profile Feature Sn63/Pb37 Pb-Free Average Ramp Rate (TL to TP) 3°C/sec maximum 3°C/sec maximum Preheat Minimum Temperature (TSMIN) 100°C 150°C Maximum Temperature (TSMAX) 150°C 200°C Time (TSMIN to TSMAX), tS 60 sec to 120 sec 60 sec to 180 sec TSMAX to TL Ramp-Up Rate 3°C/sec maximum 3°C/sec maximum Time Maintained Above Liquidous (TL) Liquidous Temperature (TL) 183°C 217°C Time (tL) 60 sec to 150 sec 60 sec to 150 sec Peak Temperature (TP) 240°C + 0°C/−5°C 260°C + 0°C/−5°C Time within 5°C of Actual Peak Temperature (tP) 10 sec to 30 sec 20 sec to 40 sec Ramp-Down Rate 6°C/sec maximum 6°C/sec maximum Time 25°C to Peak Temperature (t25°C) 6 minutes maximum 8 minutes maximum Figure 6. Recommended PCB Layout tP tL t25°C tS PREHEAT CRITICAL ZONE TL TO TP TIME RAMP-DOWN RAMP-UP TSMIN TSMAX TP TL CENTER PAD IS NOT INTERNALLY CONNECTED BUT SHOULD BE SOLDERED FOR MECHANICAL INTEGRITY 0.40 MAX 0.50 0.25 1.60 0.50 0.25 3 3 0.25 MAX 1.60 DIMENSIONS SHOWN IN MILLIMETERS |
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