What means TDV?
TDV stands for TransistorDataVergleichstabelle 1) and is a result of the first transistor comparison table which were first published in 1975 by ECA called tdv1 to tdv4, some exemplares are still available in our online shop.
Later we did published a CD-ROM with this data base called tdv-disk.
This data base includes the technical data of transistors, FETs, since vrt-dvd is published this data base is include into the vrt-dvd and into our online data base www.ecadata.de and will be regularly updated until now. More informations about the tdv data sheet is available here.