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FT230XQ-R Datasheet(PDF) 39 Page - Future Technology Devices International Ltd. |
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FT230XQ-R Datasheet(HTML) 39 Page - Future Technology Devices International Ltd. |
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39 / 44 page  Copyright © Future Technology Devices International Limited 39 FT230X USB TO BASIC UART IC Version 1.4 Document No.: FT_000566 Clearance No.: FTDI# 260 9.5 Solder Reflow Profile The FT230X is supplied in Pb free 16 LD SSOP and QFN-16 packages. The recommended solder reflow profile for both package options is shown in Figure 9.5. 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 Figure 9.5 FT230X Solder Reflow Profile The recommended values for the solder reflow profile are detailed in Table 9.1. Values are shown for both a completely Pb free solder process (i.e. the FT230X is used with Pb free solder), and for a non-Pb free solder process (i.e. the FT230X 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 9.1 Reflow Profile Parameter Values |
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