Datasheet

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Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
Film Capacitors – Metallized Polypropylene Film EMI Suppression Capacitors
PHE844, 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themaximumtemperatureis
below the limit inside the element.
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. Pre-designed solder pots are lifted from the bath with molten
solder only at the places of the selected components, and then 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 with a time from 3 to 10 seconds. In selective soldering, the risk of
overheatingisgreaterthanindouble-waveowsoldering.Greatcaremustbetakensothatthepartsdonotoverheat.