rec_3
(3) Lead-free solders cannot be used in cryogenic applications, as they are prone to tin pest, which seriously affects the reliability of the appliances. It has been proven that, in typically operated cryogenic sensors, no alternative connection technologies other than soldering are both reliable and available.
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Source: EUR-Lex (Cellar) · retrieved 2026-10-19 · Text as adopted (Official Journal); later amendments are not incorporated in this text.