Mechanism of wire bond shear testing

S Manoharan, C Patel, S Hunter, P McCluskey - Microelectronics Reliability, 2018 - Elsevier
Shear testing of wire bonds in microelectronics devices is important in bonding process
qualification, but the actual mechanism of shearing Cu bonds from Al pads is not thoroughly …

Life prediction of copper wire bonds in commercial devices using principal component analysis (PCA)

S Manoharan, C Patel, S Dunford, J Beshears… - Microelectronics …, 2019 - Elsevier
Copper has been widely adopted as a viable alternative to gold for wire bonding, due to its
lower cost, better electrical and thermal conductivity, lower tendency for wire sweep due to a …

Review of shelf life evaluation methods and a physics of failure approach for shelf life estimation for electronic components

NMJ Li, D Das, P McCluskey - Microelectronics Reliability, 2019 - Elsevier
Long term storage reliability or shelf life is not well understood in the electronic industry. In
this article, we identified inconsistent shelf life interpretations used in the electronics industry …

Mechanics of copper wire bond failure due to thermal fatigue

S Manoharan, NMJ Li, C Patel, S Hunter… - 2018 IEEE 20th …, 2018 - ieeexplore.ieee.org
Thermal stresses occur on wire Bonds due to mismatch of coefficient of thermal expansion
(CTE) between wire and mold compound in addition to the global deformation of the …

Deriving lifetime predictions for wire bonds at high temperatures

MD Hook, S Hunter, M Mayer - Microelectronics Reliability, 2018 - Elsevier
We report a method to predict wire bond lifetimes. Wire bond resistance increase due to
thermal stress can be modelled by the Arrhenius equation, permitting prediction of wire bond …