chip scale package (CSP) technology, solder thermal interface materials (STIMs), out-gassing phenomenon, defective metallisation, finite element analysis (FEA)

Otiaba, Kenny C., Bhatti, R.S., Ekere, N.N., Mallik, S., Alam, M.O., Amalu, E.H. and Ekpu, M. (2012) Numerical study on thermal impacts of different void patterns on performance of chip-scale packaged power device. Microelectronics Reliability, 52 (7). pp. 1409-1419. ISSN 0026-2714 (doi:10.1016/j.microrel.2012.01.015)

chip-scale packaged power device, automotive applications, solder thermal interface materials (STIMs), three-dimensional finite element analysis, lead-free solder

Otiaba, K.C., Bhatti, R.S., Ekere, N.N., Mallik, S., Amalu, E.H. and Ekpu, M. (2011) Thermal effects of die-attach voids location and style on performance of chip level package. In: 3rd IEEE International Conference on Adaptive Science and Technology (ICAST 2011): Proceedings. IEEE Conference Publications . Institute of Electrical and Electronics Engineers, Inc., Piscataway, NJ, USA, pp. 231-236. ISBN 9781467307581 (doi:10.1109/ICASTech.2011.6145176)

fatigue failure, finite element analysis, life prediction, thermal fatigue

Otiaba, Kenny C., Bhatti, R.S., Ekere, N.N., Mallik, S. and Ekpu, M. (2012) Finite element analysis of the effect of silver content for Sn–Ag–Cu alloy compositions on thermal cycling reliability of solder die attach. Engineering Failure Analysis, 28. pp. 192-207. ISSN 1350-6307 (doi:10.1016/j.engfailanal.2012.10.008)

microelectronics, thermal efficiency, heat sink geometry, aluminium, copper

Ekpu, Mathias, Bhatti, Raj, Ekere, Ndy, Mallik, Sabuj, Amalu, Emeka and Otiaba, Kenny (2011) Investigation of effects of heat sinks on thermal performance of microelectronic package. In: 3rd IEEE International Conference on Adaptive Science and Technology (ICAST 2011): Proceedings. IEEE Conference Publications . Institute of Electrical and Electronic Engineers, Inc., Piscataway, NJ, USA, pp. 127-132. ISBN 9781467307581 (doi:10.1109/ICASTech.2011.6145164)

solder die attach, voids and thermal resistance

Otiaba, K.C., Bhatti, R.S., Ekere, N.N., Ekpu, M. and Adeyemi, J. (2011) Comparative study of the effects of coalesced and distributed solder die attach voids on thermal resistance of packaged semiconductor device. In: Collection of Papers Presented at the 17th International Workshop on THERMal INvestigation of ICs and Systems (THERMINIC' 2011). EDA Publishing Association, Grenoble, France, pp. 115-119. ISBN 9782355000188

solders, thermal interface materials, fatigue, lead-free

Ekpu, Mathias, Bhatti, Raj, Okereke, Michael I. ORCID: https://orcid.org/0000-0002-2104-012X, Mallik, Sabuj and Otiaba, Kenny (2014) Fatigue life of lead-free solder thermal interface materials at varying bond line thickness in microelectronics. Microelectronics Reliability, 54 (1). 239 - 244. ISSN 0026-2714 (doi:10.1016/j.microrel.2013.08.006)

thermal constriction, micro-contact, micro-gap, chip, heat sink

Ekpu, Mathias, Bhatti, Raj, Okereke, M.I. ORCID: https://orcid.org/0000-0002-2104-012X, Mallik, Sabuj and Otiaba, Kenny (2014) The effect of thermal constriction on heat management in a microelectronic application. Microelectronics Journal, 45 (2). 159 - 166. ISSN 0026-2692 (doi:10.1016/j.mejo.2013.10.011)

thermal management materials, heat sink, thermal conductivity, coefficient of thermal expansion, density, cost, Al/SiC

Ekpu, Mathias, Bhatti, Raj, Ekere, Ndy and Mallik, Sabuj (2011) Advanced thermal management materials for heat sinks used in microelectronics. In: EMPC-2011: 18th European Microelectronics and Packaging Conference. IEEE Conference Publications . Institute of Electrical and Electronics Engineers, Inc., Piscataway, NJ, USA, pp. 1-8. ISBN 9781467306942