Microstructure, Mechanical, and Electrical Properties and Corrosion Analysis of Lead-Free Solder CSI Joints on Cu Substrate Using Novel Concentrated Solar Energy Soldering (CSES) Method

Table 2

Tensile strength of CSES and CSI solder joints (before and after corrosion).

Solder material	CSES (before corrosion)		CSI (before corrosion)		CSES (after corrosion)		CSI (after corrosion)
	Tensile strength (MPa)	Std devi.	Tensile strength (MPa)	Std devi.	Tensile strength (MPa)	Std devi.	Tensile strength (MPa)	Std devi.
SAC305	46.894	1.1523	45.182	1.1643	39.895	1.4523	38.993	1.1723
SACX0307	35.207	1.1943	34.154	2.1943	28.861	1.2943	27.923	1.2943
99C	31.904	1.2333	30.189	1.5333	25.243	1.5333	23.378	1.2633
SnPb	44.832	1.2863	43.987	1.5863	36.986	1.4863	35.762	1.3863