Indium Corporation Regional Technical Manager and Technologist Advanced Applications Andreas Karch will present at iNEMI’s upcoming seminar, Humidity Robustness and Isolation Coordination for e-Mobility. The seminar, hosted by ZESTRON Europe, will be held on February 1 in Ingolstadt, Germany.
Andreas’ presentation, No-Clean Flux Residues in Automotive Applications Must Meet Higher Requirements, will examine the influence of no-clean flux chemistries on the reliability of automotive PCB applications. In particular, the study focuses on failure caused by dendritic growth for high-power, low-standoff components for enhanced SIR conditions.
Due to increased automotive electrification (48V, HEV, EV) and the subsequent utilization of high-power components such as DPAKs and Power-QFNs in under-the-hood electronics, the SIR (Surface Insulation Resistance) specifications for evaluating the electrical reliability of no-clean solder paste flux chemistry have also become more stringent. For example, test voltage has increased from 5V to 1050V, test time has increased from 168 to 5001,000 hours, pitch has decreased from 0.5mm to 0.20.3mm, and minimum SIR threshold has increased from 100M to 500M.
No-clean solder pastes are normally used in automotive PCB assembly to solder low-standoff components such as DPAKs and power-QFNs (gap between the PCB pad and the component underbody is typically under 75).
“During reflow, volatiles in the flux chemistry, such as activators and solvents, boil off; however, a lower standoff reduces the opportunity for the flux volatiles to vent, resulting in ‘wet’ flux residue post-reflow,” said Andreas. “It is, therefore, critical that the no-clean flux residue does not cause ionic dendritic growth and corrosion under low-standoff power components, throughout the working life of the product.”
Andreas serves as Technologist Advanced Applications and Technical Manager for Germany, Austria, and Switzerland for Indium Corporation. He has more than 20 years of experience in automotive electronics and power electronics, including the development of advanced customized solutions. In 2014, the Austrian Patent Office awarded him the “Inventum” award for his patent for innovate LED automotive lighting as one of the top ten applicants. He is an ECQA-certified development engineer and has earned the Six Sigma Yellow Belt.
Informazioni su Indium Corporation
Indium Corporation è un'azienda leader nella raffinazione, fusione, produzione e fornitura di materiali per i mercati globali dell'elettronica, dei semiconduttori, dei film sottili e della gestione termica. I prodotti includono saldature e flussanti, brasature, materiali per interfacce termiche, bersagli per sputtering, metalli e composti inorganici di indio, gallio, germanio e stagno e NanoFoil. Fondata nel 1934, l'azienda dispone di un'assistenza tecnica globale e di stabilimenti situati in Cina, Germania, India, Malesia, Singapore, Corea del Sud, Regno Unito e Stati Uniti.
Per ulteriori informazioni su Indium Corporation, visitare il sito www.indium.com o inviare un'e-mail a Jingya Huang. È inoltre possibile seguire i nostri esperti, From One Engineer To Another (#FOETA), all'indirizzo www.linkedin.com/company/indium-corporation/.
