Datasheet
© KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 • 864-963-6300 • www.kemet.com F3114_C4AQ • 2/6/2018 13
Power and AC Film Capacitors – Printed Circuit Board Mount Power Film Capacitors
C4AQ, Radial, 2 or 4 Leads, 500 - 1,500 VDC, for DC Link (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
Dielectric
Film Material
Maximum Preheat
Temperature
Maximum
Peak Soldering
Temperature
Capacitor
Pitch
≤ 10 mm
Capacitor
Pitch
= 15 mm
Capacitor
Pitch
> 15 mm
Capacitor
Pitch
≤ 15 mm
Capacitor
Pitch
> 15 mm
Polyester 130°C 130°C 130°C 270°C 270°C
Polypropylene 100°C 110°C 130°C 260°C 270°C
Paper 130°C 130°C 140°C 270°C 270°C
Polyphenylene
Sulphide
150°C 150°C 160°C 270°C 270°C
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
Maximum temperature
measured inside the element
Polyester 160°C
Polypropylene 110°C
Paper 160°C
Polyphenylene Sulphide 160°C
Temperature monitored inside the capacitor.
Selective Soldering Recommendations
Selective dip soldering is a variation of reow 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 ow 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 prole for selective soldering is similar to the double wave ow 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 ow soldering, and great care must be taken so that the parts are not overheated.