Reliability of integrated resistors and the influence of WLCSP bake

Autor: Leo van Marwijk, V. M. Girault, Som Nath, J. Zhang, S. Jose, J. Bisschop
Rok vydání: 2016
Předmět:
Zdroj: 2016 IEEE International Integrated Reliability Workshop (IIRW).
DOI: 10.1109/iirw.2016.7904904
Popis: This paper presents the long-term stability of integrated CMOS resistors in a 40nm technology node. Unsilicided polysilicon and diffusion resistors with two different geometries were investigated. The thermal stability of the resistors was studied at different stress temperatures. Some resistors were subjected to the critical bake temperature in the WLCSP (Wafer Level Chip Scale Packaging) assembly process. The resistance shifts were measured at different stress temperatures after the bake. It was found that WLCSP thermal budget has a significant influence on the resistor shift characteristics in the case of p-poly resistors.
Databáze: OpenAIRE