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P276EE104K275A Datasheet(PDF) 7 Page - Kemet Corporation |
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P276EE104K275A Datasheet(HTML) 7 Page - Kemet Corporation |
7 / 14 page © KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 (864) 963-6300 • www.kemet.com F3011_PME271M_X2_275 • 5/14/2015 7 Film Capacitors AC Line EMI Suppression and RC Networks – PME271M Series Metallized Impregnated Paper, Class X2, 275 VAC 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 ≤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 Selectivedipsolderingisavariationofreflowsoldering.Inthismethod,theprintedcircuitboardwiththrough-holecomponentstobe solderedispreheatedandtransportedoverthesolderbathasinnormalflowsolderingwithouttouchingthesolder.Whentheboardis 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. Thetemperatureprofileforselectivesolderingissimilartothedoublewaveflowsolderingoutlinedinthisdocument,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 indoublewaveflowsoldering,andgreatcaremustbetakensothatthepartsarenotoverheated. |
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