Table 4 Circuit Impedance Reliability Factors

C ircuit Im pedanc e

Failure R ate Im pedanc e

(ohm s/volt)

(m ultiplying fac tor )

0.1

1.0

0.2

0.8

0.4

0.6

 

 

0.6

0.4

 

 

0.8

0.3

 

 

1.0

0.2

 

 

2.0

0.1

3 or gre ater

0.0 7

MOUNTING PRECAUTIONS

Limit Pressure on Capacitor Installation with Mounter

A capacitor that has been damaged should be discarded to avoid later problems resulting from

mechanical stress.

Pressure must not exceed 4.9 N with a tool end diameter of 1.5mm when applied to the capacitors using an absorber, centering tweezers, or the like. An excessively low absorber setting position would result in not only the application of undue force to the capacitors but capacitor and other component scattering,circuit board wiring breakage, and / or cracking as well, particularly when the capacitors are mounted together with other chips having a height of 1 mm or less.

Flux

Select a flux that contains a minimum of chlorine and amine.

After flux use, the chlorine and amine in the flux remain and must therefore be removed.

Recommended Soldering Pattern Dimensions

L

 

 

 

 

 

Capacitor

 

 

 

 

 

W

Pattern

 

 

 

 

 

 

 

y

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

x

z

x

SCL Series

Fig. 9

Page 21
Image 21
Samsung SCLSeries manual Mounting Precautions, Limit Pressure on Capacitor Installation with Mounter, Flux