HIGH VOLTAGE CHIP CAPACITORS
8. SOLDERIND AND MOUNTING :
8-1 Re-flow Soldering :
V8N SERIES
Preheat and gradual increase in temp. to the reflow temp. is recommended to decrease the potential of the thermal crack
on the components. The recommended heating rate depends on the size of the component, however it should not
exceed 3°C/sec.
8-2 Wave Soldering :
Most of the components are wave soldered with solder at 230~250°C. Adequate care must be taken to prevent the
potential of thermal cracks on the ceramic capacitors. Refer to Figure 2 for optimum soldering benefits.
8-3 Hand Soldering :
Sudden temp. change in components, results in a temp. gradient, and therefore may cause internal thermal cracks in the
components. In general a hand soldering method is not recommend unless proper preheating and handling practices have
been taken. Care must also be taken not to touch the ceramic body of the capacitor with the tip of solder iron.
How to solder repair by solder iron :
1) Selection of soldering iron tip
The required temp. of solder iron for any type of repair depends on the type of the tip, the substrate material, and the
solder land size
2) recommended solder iron condition
a) Preheat substrate to (60°C~120°C).
b) 350°C tip temperature (max)
c) Never contact the ceramic with the iron tip
d) 3.0mm tip diameter (max)
e) Use a 30 watt (max.) soldering iron with tip diameter of 3.0mm
f) Limit soldering time to 5 secs.
Cooling condition :
Natural cooling using air is recommended. If the chips are dipped into a solvent for cleaning, the temp. difference
between the solvent and the chips must be less than 100°C.
TEMPERATURE °C
TEMPERATURE °C
Preheating
260
217
Soldering
Natural
cooling
Preheating
300
250
230
200
Soldering
Natural
cooling
Over
1min.
Over
1min.
Gradual Cooling
70-90secs
Over 2mins.
Over 1min
2-3secs.
Figure 1. Re-flow Soldering
Figure 2. Wave Soldering
TEMPERATURE °C
Preheating
350
250
200
Soldering
Natural
cooling
Within 5secs.
Figure 3. Hand Soldering
NOTE : Specifications subject to change without notice. Please check our website for latest information.
15.01.2008
SUPERWORLD ELECTRONICS (S) PTE LTD
PG. 7
SUPERWORLD [ SUPERWORLD ELECTRONICS ]
