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DS_FT313H Scheda tecnica(PDF) 60 Page - Future Technology Devices International Ltd. |
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DS_FT313H Scheda tecnica(HTML) 60 Page - Future Technology Devices International Ltd. |
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60 / 64 page  Copyright © 2012 Future Technology Devices International Limited 60 Document No.: FT_000589 FT313H USB2.0 HS Host Controller Datasheet Version 1.1 Clearance No.: FTDI# 318 8.4 Solder Reflow Profile The FT313H is supplied in Pb free QFN-64, LQFP-64 and TQFP-64 packages. The recommended solder reflow profile for all package options is shown in Figure 8-4. Figure 8-4 FT313H Solder Reflow Profile The recommended values for the solder reflow profile are detailed in Table 8-1. Values are shown for both a completely Pb free solder process (i.e. the FT313H is used with Pb free solder), and for a non-Pb free solder process (i.e. the FT313H is used with non-Pb free solder). Profile Feature Pb Free Solder Process Non-Pb Free Solder Process Average Ramp Up Rate (Ts to Tp) 3°C / second Max. 3°C / Second Max. Preheat - Temperature Min (Ts Min.) - Temperature Max (Ts Max.) - Time (ts Min to ts Max) 150°C 200°C 60 to 120 seconds 100°C 150°C 60 to 120 seconds Time Maintained Above Critical Temperature TL: - Temperature (TL) - Time (tL) 217°C 60 to 150 seconds 183°C 60 to 150 seconds Peak Temperature (Tp) 260°C 240°C Time within 5°C of actual Peak Temperature (tp) 20 to 40 seconds 20 to 40 seconds Ramp Down Rate 6°C / second Max. 6°C / second Max. Time for T= 25°C to Peak Temperature, Tp 8 minutes Max. 6 minutes Max. Table 8-1 Reflow Profile Parameter Values Critical Zone: when T is in the range T to T Time, t (seconds) 25 P T = 25º C to T tp Tp TL t Preheat S t L Ramp Up L p Ramp Down T Max S T Min S |
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