FIELD: metallurgy.
SUBSTANCE: invention refers to steel sheet with surface finish for electronic components of electric devices. Steel sheet with surface finish for electronic components includes steel sheet or nickel-coated steel sheet and Sn-Zn alloy layer in amount of 3 g/m2 or more, formed by application of Sn Zn processed by thermal diffusion method onto the sheet, or by application of Sn-Zn alloy onto the sheet. Weight ratio of Zn/Sn in Sn-Zn alloy layer comprises 0.001 to 0.1. Non-organic coating with P+Zn+Mg content within 0.1 to 100 mg/m2 is applied onto the Sn-Zn alloy layer.
EFFECT: obtainment of steel sheet with surface finish, excellent solder wettability, whisker-proof properties and exterior stability in application as an electronic component.
5 cl, 4 dwg, 1 tbl, 3 ex
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