Electrical engineering; basic environmental testing procedures; test Db and guidance: damp heat, cyclic (12 + 12-hour cycle); identical with IEC 60068-2-30, edition 1980 (status as of 1985)
Harmonized system of quality assessment for electronic components; family specification: digital integrated TTL-Schottky-circuits, series 54S, 64S, 74S, 84S
