Datasheet
7© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard F3088_P295_Y1_500 • 2/20/2019
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
Film Capacitors – AC Line EMI Suppression and RC Networks
P295 Series Metallized Impregnated Paper, Class Y1, 500 VAC
Soldering Process cont'd
Wave Soldering Recommendations cont'd
1. The table indicates the maximum set-up temperature of the soldering process.
Dielectric
Film Material
Maximum Preheat Temperature
Maximum Peak
Soldering Temperature
Capacitor
Pitch≤10mm
Capacitor
Pitch = 15 mm
Capacitor
Pitch > 15 mm
Capacitor
Pitch≤15mm
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
Selectivedipsolderingisavariationofreowsoldering.Inthismethod,theprintedcircuitboardwiththrough-hole
componentstobesolderedispreheatedandtransportedoverthesolderbath,asinnormalowsoldering,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.
Thetemperatureproleforselectivesolderingissimilartothedouble-waveowsolderingoutlinedinthisdocument.
However, instead of two baths, there is only one with a time from 3 to 10 seconds. In selective soldering, the risk of
overheatingisgreaterthanindouble-waveowsoldering,andgreatcaremustbetakensothatthepartsdonotoverheat.