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Z0 Fiches technique(PDF) 6 Page - Superworld Electronics |
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Z0 Fiches technique(HTML) 6 Page - Superworld Electronics |
6 / 9 page SUPERWORLD ELECTRONICS (S) PTE LTD PG. 6 9. SOLDERING AND MOUNTING : soldering of large size products is discouraged. Recommended temperature profile for wave soldering is shown seen by the circuit when immersed in the molten solder wave. Due to the risk of thermal damage to products, wave 9-2.2 Solder Wave : Wave soldering is perhaps the most rigorous of surface mount soldering processes due to the steep rise in temperature 9-1. Recommended PC Board Pattern air soldering tools. 9-2.3 Soldering Iron (Figure 3) : 9-2.1 Lead Free Solder Re-flow : wave and re-flow soldering systems. If hand soldering cannot be avoided, the preferred technique is the utilization of hot by the difference in coefficients of expansion between solder, chip and substrate. The terminations are suitable for all Mildly activated rosin fluxes are preferred. The minimum amount of solder can lead to damage from the stresses caused Recommended temperature profiles for re-flow soldering in Figure 1. Products attachment with soldering iron is discouraged due to the inherent process control limitations. In the event that a) Preheat circuit and products to 150°C. b) 350°C tip temperature (max) c) Never contact the ceramic with the iron tip a soldering iron must be employed the following precautions are recommended. Note : 9-2. Soldering e) Use a 20 watt soldering iron with tip diameter of 1.0mm f) Limit soldering time to 3 secs. d) 1.0mm tip diameter (max) under mechanical stress as warping the board. the mechanical stress to prevent failure. Products shall be positioned in the sideway direction against PC board should be designed so that products are not sufficient 0.80 0.30 in Fig. 2 480s max. Figure 2. Wave Soldering Over 2min. Figure 1. Re-flow Soldering Time(sec.) 60~180s 25 217 200 150 60~150s Figure 3. Hand Soldering Over 1min. 150 Gradual Cooling Soldering 330 350 Preheating Natural (max.) (max.) 10s 3s cooling 245 150 Gradual Cooling Within 10s Natural cooling Preheating TP(260°C/10s max.) 20~40s Soldering 260 Preheating Natural cooling Soldering 11.08.2010 FERRITE CHIP BEADS Z0 SERIES NOTE : Specifications subject to change without notice. Please check our website for latest information. |
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