Type 947D, DC Link Capacitors Product Release, April 2012

Type 947D, DC Link Capacitors High Energy Density DC Link Capacitors for Large Inverter Systems

947C versus 947D 947C 947D Smaller Size, Better Performance 1st generation of DC link Film Capacitors Advanced Film Technology. Smaller Size, Better Performance Recommended for all new designs We will continue to support customers who have active production .

947C versus 947D 947D 947C 947D, Higher Energy Density 947C 947D Type 947D Capacitance 420µF Voltage 1100 Vdc Diameter 85 mm Length 136 mm Energy Density 0.33 J/cm^3 ESR 2.8 mOhm Ripple Current @55C 56 A Type 947C Capacitance 430µF Voltage 1100 Vdc Diameter 90 mm Length 170 mm Energy Density J/cm^3 0.24 J/cm^3 ESR 3.4 mOhm Ripple Current @55C 57 A 947C 947D 430µF 1100 Vdc 420µF 1100 Vdc 20% Smaller size for same CV Higher capacitance density Higher current density

947D versus 947C Mechanical 947C 947D Euro Style Plastic Header Cap Increased terminal to case insulation Barrier between terminals increases arc distance between terminals Black insulating Sleeve Standard Bare can standard, black insulating sleeve is optional Sizes DØ: 85, 90, 116mm Sizes: DØ 85, 90, 100, 116mm

Type 947D Mechanical Specifications Connected to the + and - inverter bus bars using M8 threaded studs or M6 threaded inserts. Optional M12 X 16 stud at bottom of case for chassis mounting. Non electrical

Type 947D Technology Segmented Metallized Polypropylene, Controlled Cap Loss, Open Circuit Fail mode. Types 947D utilizes segmented metallized polypropylene Segmented metallized pattern offers the advantages of controlled cap loss and open circuit protection.

Type 947D Used as DC link in Large Inverter Systems

Inverter Topology

Inverter Applications Inverters Convert DC to AC

DC FILtering At Input 60 Hz AC is rectified to DC with high ripple AC Most electronic applications do not perform well with high AC ripple. A filter, capacitor is placed between the rectifier and the load to smooth the voltage by filtering out much of the unwanted AC.

Inverter Applications Inverter switching produces ripple voltage across the capacitors resulting in high ripple current. Total ripple current is from rectification and switching Ripple current heats the capacitor (blue peaks below) Higher temperature shortens capacitor life

Focus on Inverter Applications Inverters Convert DC Voltage Into AC Voltage INVERTER Renewable Energy Wind Solar Fuel Cells Industrial Welding Lasers Semiconductor Processing Motor Drives Elevator Industrial Motor Drives Electric Vehicles Power Backup UPS Flywheel Battery Chargers SMPS Most solar and wind inverters use film capacitors for DC Link 13

Focused Market for 947D Solar Inverters Solar, Photovoltaic (PV Inverters) Growth of new installations doubled in 2010 US – 1 GW added in 2011 WW – 16 GW Commercial Rooftop systems Large scale installations: Utility Market for DC Link Capacitors in Solar Applications US - $10M WW - $160M Capacitor Opportunities in Solar: 947D, DC Link Power Film, Screws, IGBT snubbers, Carbon Double Layer

Focused Market for 947D Wind Inverters Wind Energy Global increase of 35 GW in 2011 US adding 10 GW / yr Utilize large inverter systems: 500KW to 5MW $10M annual market for bus capacitors in US wind inverters Capacitor Opportunities in Wind Power: 947D, DC Link Power Film, Screws, IGBT snubbers, Carbon Double Layer

Focused Market for 947D Electric Vehicles Electric Transportation EV and HEV (Inverters) : Hybrid Buses Commuter Rail Off-road ruggedized vehicles Industrial electric vehicles Battery Chargers Opportunities in HEV: Dc Link, Power Film, Screw Terminal, IGBT snubbers, Carbon Double Layer

Competitors Type 947D Manufacturer Series 947D Link to 947C Datasheet Electronicon PK16XC/XI Epcos B2562_ Vishay DCMKP Kemet/Arco C44U AVX FFLI Eaco SHP Faratronic C3B ASC IFP Ducati DC85C Electronic Concepts UP3 F&T EC Hitachi AIC MLC ICAR LNK-M3…2 Nucon (Russia) FA1M Spectrum 55DC 947D Link to 947C Datasheet

CDE’s Competitive Advantage, Type 947D Fused / segmented metallized film system limits cap loss and enhances open circuit failure mode. 100% burn-in Direct access to engineers to discuss customer’s application

Product Support team Type 947D Product Marketing Manager, Mario DiPietro (Liberty) mdipietro@cde.com Product Specialist, Mike Rapoza (New Bedford) mrapoza@cde.com Engineering Manager, Phil Whitmire (Liberty) pwhitmire@cde.com Director of R&D, Sam Parler (Liberty) sparler@cde.com Marketing, Scott Franco (New Bedford) sfranco@cde.com

Sales Action Plan Type 947D Introduce Type 947D DC Link Film Capacitors to inverter design engineers within your territory. Target Customer List Discuss opportunities for new inverter designs Find Opportunities to displace competitors in existing designs Register your NBO’s via your Infocenter !!!!!!!! Identify and train key distributor branches and regional distributors that serve these markets and inverter customers. Target customer list and buddy calls.

Thank you! 