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SDI453226-331F データシート(PDF) 5 Page - Superworld Electronics |
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SDI453226-331F データシート(HTML) 5 Page - Superworld Electronics |
5 / 7 page WIREWOUND CHIP INDUCTORS SDI453226 SERIES SUPERWORLD ELECTRONICS (S) PTE LTD NOTE : Specifications subject to change without notice. Please check our website for latest information. PG. 5 31.07.2008 Figure 3. Hand Soldering Products attachment with soldering iron is discouraged due to the inherent process control limitations. In the event that Soldering Wave soldering is perhaps the most rigorous of surface mount soldering processes due to the steep rise in temperature seen by the circuit when immersed in the molten solder wave, typical at 240°C. Due to the risk of thermal damage to products, wave soldering of large size products is discouraged. Recommended temperature profile for wave soldering Within 3secs. Over 1min. Gradual Cooling Note : 7-2.3 Soldering Iron (Figure 2) : a soldering iron must be employed the following precautions are recommended. is shown in Figure 2. Soldering Over 1min. Within 10secs. Figure 1. Re-flow Soldering Over 1min. Preheating Soldering Figure 2. Wave Soldering Within 3secs. Over 2mins. Gradual Cooling Natural cooling 150 Preheating 250 Gradual Cooling cooling Natural Preheating 280 c) Never contact the ceramic with the iron tip e) Use a 20 watt soldering iron with tip diameter of 1.0mm a) Preheat circuit and products to 150°C. d) 1.0mm tip diameter (max) f) Limit soldering time to 3 secs. b) 280°C tip temperature (max) Natural cooling Mildly activated rosin fluxes are preferred. The minimum amount of solder can lead to damage from the stresses caused by the difference in coefficients of expansion between solder, chip and substrate. Our terminations are suitable for all wave and re-flow soldering systems. If hand soldering cannot be avoided, the preferred technique is the utilization of hot 7. SOLDERING AND MOUNTING : 7-1. Recommended PC Board Pattern air soldering tools. 7-2.1 Solder Re-flow : Recommended temperature profiles for re-flow soldering in Figure 1. 7-2.2 Solder Wave : 7-2. Soldering 230 150 230 230 150 2.0 2.0 1.2 |
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