Reliability Comparison Of A Conventionally Soldered Super TO-247 To A Silver-Sintered STO-247 For Automotive Inverter Technologies

Mr Michiel De Monchy, Applications manager Die Attach and Preforms
MacDermid Alpha Electronics Solutions
Netherlands
 

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Presentation Summary

In this presentation we will compare the reliability of a conventional manufactured (soldered) Super TO-247 to a fully (Ag) sintered STO-247. The parts were either soft-soldered or sintered using Alpha® Argomax® material and went through power-cycling. The changes in both Rth and micro-structure were closely monitored and showed a highly increased reliability of the sintered devices.

Company Profile (Alpha Assembly Solutions)

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Alpha Assembly Solutions, a MacDermid Performance Solutions Business, is the global leader in the development, manufacturing and sales of innovative specialty materials used in a wide range of industry segments, including electronics assembly, power electronics, die attach, LED lighting, photovoltaics, semiconductor packaging, automotive, flexible & printed electroncis and others.
 
With a unique global presence in over 30 locations throughout the Asia Pacific, Americas and Europe regions, Alpha supplies a full line of ALPHA® electronics assembly material products, including Solder Paste, Exactalloy® Solder Preforms, Cored Solder Wire Solder, Wave Soldering Fluxes, Bar Solder Alloys, and Stencils. Alpha serves the Flexible, Formable & Printed Electronics market through a comprehensive offering of Silver Inks, Carbon Inks, Dielectric Inks, Electronic Adhesives and Low Temperature Solder Pastes. It offers die attach product technologies to the power electronics segment in its Argomax®, Atrox™ and Fortibond™ brands.
 
For the LED segment, Alpha offers its Lumet™ products covering applications from die attach to systems assembly in the LED manufacturing process. Alpha also offers product technologies for the Photovoltaic segment, including high performance liquid fluxes and solder alloys for producing standard ribbon and bus bar, as well as, solder pastes, cored wire, conductive adhesives and preforms for use in PV module assembly. Also, Alpha's Advanced Materials unit is the leader in electronic polymers and solder materials for semiconductor packaging applications.
 
Since its founding in 1872, Alpha has been committed to developing and manufacturing the highest quality specialty materials. For more information, visit www.AlphaAssembly.com External Link.
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