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C3-R39-10 参数 Datasheet PDF下载

C3-R39-10图片预览
型号: C3-R39-10
PDF下载: 下载PDF文件 查看货源
内容描述: 陶瓷片式电感器 [CERAMIC CHIP INDUCTORS]
分类和应用: 电感器
文件页数/大小: 9 页 / 376 K
品牌: SUPERWORLD [ SUPERWORLD ELECTRONICS ]
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CERAMIC CHIP INDUCTORS  
C3 SERIES  
9. SOLDERING AND MOUNTING :  
9-1. Recommended PC Board Pattern  
3.00  
PC board should be designed so that products are not sufficient  
under mechanical stress as warping the board.  
1.00  
Products shall be positioned in the sideway direction against  
the mechanical stress to prevent failure.  
9-2. Soldering  
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. The 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  
air soldering tools.  
9-2.1 Lead Free Solder Re-flow :  
Recommended temperature profiles for re-flow soldering in Figure 1.  
9-2.2 Solder Wave :  
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. Due to the risk of thermal damage to products, wave  
soldering of large size products is discouraged. Recommended temperature profile for wave soldering is shown  
in Fig. 2  
9-2.3 Soldering Iron (Figure 3) :  
Products attachment with soldering iron is discouraged due to the inherent process control limitations. In the event that  
a soldering iron must be employed the following precautions are recommended.  
Note :  
a) Preheat circuit and products to 150°C.  
b) 350°C tip temperature (max)  
c) Never contact the ceramic with the iron tip  
d) 1.0mm tip diameter (max)  
e) Use a 20 watt soldering iron with tip diameter of 1.0mm  
f) Limit soldering time to 3 secs.  
Preheating  
Soldering  
20~40s  
Natural  
cooling  
Preheating  
Soldering  
Natural  
cooling  
260  
TP(260°C/10s max.)  
217  
245  
150  
200  
150  
60~150s  
60~180s  
480s max.  
25  
Gradual  
Cooling  
Time(sec.)  
Over 2min.  
Figure 1. Re-flow Soldering  
Within 3s  
Preheating  
Soldering  
Natural  
cooling  
Figure 2. Wave Soldering  
3s  
(max.)  
350  
10s  
(max.)  
330  
150  
Gradual  
Cooling  
Over 1min.  
Figure 3. Hand Soldering  
NOTE : Specifications subject to change without notice. Please check our website for latest information.  
07.08.2008  
SUPERWORLD ELECTRONICS (S) PTE LTD  
PG. 6