Datasheet

© KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 [phone] • www.kemet.com F3108_PHE844_X1_440-480 • 5/15/2015 8
Film Capacitors – Metallized Polypropylene Film EMI Suppression Capacitors
PHE844 Series, Class X1, 440/480 VAC, 105°C
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reow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prole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.