X and Y Capacitors - KEMET

1 Copyright 2007 KEMETX and Y CapacitorsCopyright 2007 KEMETEMI Capacitors on the AC LineYYXX Capacitors are across the line. If they short-circuit, the risk is Capacitors are from line to chassis. If they short-circuit, the risk is a shock to the of the risks, X and Y Capacitors are safety agency 2007 KEMETSelf-healing Metallized film Capacitors can repair themselves after a voltage occurs after metallization heats up and around breakdown is isolated. No short circuit!Copyright 2007 KEMETSelf-healing Metallized film Capacitors can repair themselves after a voltage spike. Ceramic caps cannot. Their failure mode can be a short circuit, with risk of shock in the case of a Y capacitor. Breakdown occurs after metallization heats up and around breakdown is isolated. No short circuit!Copyright 2007 KEMETX CapacitorsCopyright 2007 KEMETX2 Capacitor PHE840 MBenefits for the designer Copyright 2007 KEMET Lower prices, smaller Capacitor PHE840M Benefits for the designer Copyright 2007 KEMET Lower prices, smaller sizes.

2 Many values in standard leadspacings plus new smaller alternates. 1 F in and new F in and new Capacitor PHE840M Benefits for the designer Copyright 2007 KEMET Lower prices, smaller sizes. Many values in standard leadspacings plus new smaller alternates. 1 F in and new F in and new Max. C-value is 10 F for high power SMPS. Eliminates the need for 2 Capacitors in Capacitor PHE840M Benefits for the designer Copyright 2007 KEMET Lower prices, smaller sizes. Many values in standard leadspacings plus new smaller alternates. 1 F in and new F in and new Max. C-value is 10 F for high power SMPS. Eliminates the need for 2 Capacitors in parallel. UL approval at 280 VAC. Eases design-ins for 277 VAC Capacitor PHE840M Benefits for the designer Copyright 2007 KEMET Lower prices, smaller sizes. Many values in standard leadspacings plus new smaller alternates. 1 F in and new F in and new Max.

3 C-value is 10 F for high power SMPS. Eliminates the need for 2 Capacitors in parallel. UL approval at 280 VAC. Eases design-ins for 277 VAC applications. Low loss polypropylene design for high frequency applications. (Polyester caps can heat up too much.) High frequency motor drives, aircraft power (400Hz).X2 Capacitor PHE840M Benefits for the designer Copyright 2007 KEMETA Product for Every VoltageX caps for industrial applications AC voltageFilmPaper275/280 PHE840 MPME271M300 PHE840 EPME271E330 PHE841440/480 PHE844 PME278600 & upPHE845 PME264 Use one capacitor of the correct voltage instead oftwo low-voltage parts in 2007 KEMETY CapacitorsCopyright 2007 KEMETY Capacitor ComparisonCeramicMetallized paper & filmCopyright 2007 KEMETY Capacitor ComparisonCeramicLess paper & filmCopyright 2007 KEMETY Capacitor ComparisonCeramicLess over time and paper & 2007 KEMETY Capacitor ComparisonCeramicLess over time and over (may require additional insulation).

4 Metallized paper & types do not push over.(Lower total cost.)Copyright 2007 KEMETY Capacitor ComparisonCeramicLess over time and over (may require additional insulation).Maximum capacitance available is ~ paper & types do not push over.(Lower total cost.)Available up to F.(Ideal for industrial apps.)Copyright 2007 KEMETY Capacitor ComparisonCeramicLess over time and over (may require additional insulation).Maximum capacitance available is ~ mode tends toward short paper & types do not push over.(Lower total cost.)Available up to F.(Ideal for industrial apps.)Self healing. Failure mode is open 2007 KEMETNew film Y cap PHE850 Alternative to ceramicsNEW!Copyright 2007 KEMETNew film Y cap PHE850 Alternative to ceramics Metallized, self-healing construction. Safer failure mode at near-ceramic !Copyright 2007 KEMETNew film Y cap PHE850 Alternative to ceramics Metallized, self-healing construction.

5 Safer failure mode at near-ceramic prices. Very wide C-value range: 1 F. Higher values excellent for industrial !Copyright 2007 KEMETNew film Y cap PHE850 Alternative to ceramics Metallized, self-healing construction. Safer failure mode at near-ceramic prices. Very wide C-value range: 1 F. Higher values excellent for industrial applications. Small physical !Copyright 2007 KEMETNew film Y cap PHE850 Alternative to ceramics Metallized, self-healing construction. Safer failure mode at near-ceramic prices. Very wide C-value range: 1 F. Higher values excellent for industrial applications. Small physical size. Does not push over. Can lower total cost to !Copyright 2007 KEMETSMD Film CapacitorsFocusing the sales effort for maximum resultsCopyright 2007 KEMETSMD Application ChartCopyright 2007 KEMETS older Withstand is a Critical Factor Economical Pb-free solders require higher soldering temperatures.

6 Also small parts heat more than large ones. More care is needed in choosing an SMD film cap. Cost vs. higher allowed temperature. The catalog is a good general guideline of the worst case, but some sizes handle more heat than unsure get the customer s solder 2007 KEMETC omparing Nakedand EncapsulatedCopyright 2007 KEMETD elamination in NakedStacked SMD CapacitorsNaked stacked constructionPotential delamination of stack with heat and moisture. More a potential problem in large sizes. In case of high humidity storage and short cycle reflow soldering profiles, it is recommended that the Capacitors be pre-conditioned in an 85 C oven for a minimum of 12 hours prior to reflow soldering to minimize any effects caused by the rapid vaporization of the moisture. Source: ITW Paktron Film Capacitor CatalogCopyright 2007 KEMETW ound & Encapsulated Capacitors Do Not DelaminateNaked stacked constructionPotential delamination of stack with heat and moisture.

7 More a potential problem in large constructionWinding holds itself together. No 2007 KEMETSMD Film TechnologiesEncapsulated(MMC, GMC, SMC) Naked stacked(Arco LDE, LDB)Copyright 2007 KEMETN aked stacked(Arco LDE, LDB) Good solder withstand. Acceptable environmental performance in many applications. Smaller physical size, especially in low voltages. Potentially lower cost in small sizes. Potential delamination in larger (MMC, GMC, SMC)SMD Film TechnologiesCopyright 2007 KEMETSMD Film TechnologiesNaked stacked(Arco LDE, LDB) Good solder withstand. Acceptable environmental performance in many applications. Smaller physical size, especially in low voltages. Potentially lower cost in small sizes. Potential delamination in larger (MMC, GMC, SMC) Better solder withstand. Better environmental performance, resistance to moisture / chemicals. Larger physical size. (Vertical mounting can help!) Potentially higher cost in small sizes.

8 Will not 2007 KEMETA Focused Sales Effort Will Yield Results!Copyright 2007 KEMETFilm SMD will be used Stable properties are needed and the C-value is too large for NPO ceramic. The films are the last leaded parts on the board. (Otherwise a leaded film will do.) Thermal expansion stress is damaging large 2007 KEMETT here is a place for naked and encapsulated:Encapsulated: For higher soldering temperatures. For better environmental stability. Higher C-values / 2007 KEMETN aked: Low voltage / small C-values. Moderate soldering conditions. Few environmental concerns. Where small size is is a place for naked and encapsulated:Encapsulated: For higher soldering temperatures. For better environmental stability. Higher C-values / 2007 KEMETV ertical mounting of encapsulated F / 100 VSize 6560, footprint x 15247mm2 Vertical mountingSize 6528, footprint x 7116mm2 Copyright 2007 KEMETNew products enhance our SMD offering.

9 Series GPC for pulse values up to 2200 V/ S. Series SPC like GPC but better at high frequencies. Series SMP253, safety agency approved Y2 2007 KEMETKey Selling Points(Why KEMET SMD Film?) Broad product range: Choose from multiple dielectrics. Naked or encapsulated. SMD pulse/AC Capacitors GPC and SPC. SMD Y capacitor SMP253. Superior solder withstand. Superior environmental protection. No thermal expansion stress problem. Vertical mounting option saves footprint.