Metallized Polypropylene Film EMI Suppression Capacitors
R47 Series, Class X1, 440 VAC, 110ºC (Automotive Grade)
Soldering Process cont'd
Wave Soldering Recommendations cont'd
1. The table indicates the maximum set-up temperature of the soldering process
Figure 1
Maximum Preheat
Temperature
Maximum
Peak Soldering
Temperature
Dielectric
Film Material
Capacitor Capacitor Capacitor Capacitor Capacitor
Pitch
Pitch
Pitch
Pitch
Pitch
≤ 10 mm
= 15 mm > 15 mm
≤ 15 mm
> 15 mm
130°C
100°C
130°C
150°C
130°C
110°C
130°C
150°C
130°C
130°C
140°C
160°C
270°C
260°C
270°C
270°C
270°C
270°C
270°C
270°C
Polyester
Polypropylene
Paper
Polyphenylene
Sulphide
2. The maximum temperature measured inside the capacitor:
Set the temperature so that inside the element the maximum temperature is below the limit:
Dielectric Film Material
Polyester
Polypropylene
Paper
Polyphenylene
sulphide
Temperature monitored inside the capacitor.
Maximum temperature
measured inside the element
160°C
110°C
160°C
160°C
Selective Soldering Recommendations
Selective dip soldering is a variation of reflow soldering. In this method, the printed circuit board with through-hole components to be
soldered is preheated and transported over the solder bath as in normal flow soldering without touching the solder. When the board is
over the bath, it is stopped and pre-designed solder pots are lifted from the bath with molten solder only at the places of the selected
components, and pressed against the lower surface of the board to solder the components.
The temperature profile for selective soldering is similar to the double wave flow soldering outlined in this document, however,
instead
of two baths, there is only one bath with a time from 3 to 10 seconds.
In selective soldering, the risk of overheating is greater than
in double wave flow soldering, and great care must be taken so that the parts are not overheated.
© KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 (864) 963-6300 • www.kemet.com
F3097_R47_X1_440 • 6/9/2016
9
KEMET [ KEMET CORPORATION ]
