Excellent heat dissipation due to single housing concept. 0 68 10 110 270 25 0 50 25 48 5 30 b25834 f4684 m001. B25834l7475k009 2014 08 14 2015 03 31 2016 09 30 b25834l6685k009 2014 08 14 2015 03 31 2016 09 30 epcos ag 2015.