Surfaces of dense ceramic components for electrical engineering; testing of soft-solderable metal coatingsSurfaces de composants céramiques denses pour l'électrotechnique; contr?le de couches métalliques se prêtant au soudage à l'étainFür den Anwendungs
DIN 40686-4:1983 history
1983DIN 40686-4:1983-08 Surfaces of dense ceramic components for electrical engineering; testing of soft-solderable metal coatings
1983DIN 40686-4:1983 Surfaces of dense ceramic components for electrical engineering; testing of soft-solderable metal coatings