Peter,=20 PL504 : Line Output Penthode Va(max)=3D 7kV Ik(max)=3D 250mA Wa(max)=3D 16W If=3D300mA Vf=3D27 V pinning: 1=3Dg1 2=3Dg1 3=3Dk,g3 4=3Df 5=3Df 6=3Dg2 7=3Dg2 8=3Dk,g3 9=3Dnot connected top=3Danode Dynamic Chars: Va 50/7000 V Vg2 200/200 V Vg1 -10/-120 V Ia 420/0.05 mA Ig2 37/ mA If needed I can scan the datasheet for you, but this will take some time. I think I still have some spare 504's somewhere in my shack... grtz, Rob PE1JFZ =20 Rob Sanders =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D Sagittarius meteoren waarneem groep (DMS)=20 *Homepage: http://members.chello.nl/~r.sanders3/stars/meteors/ *E-Mail : sagittarius@chello.nl *Snail M : Prunellapad 17, ZIP NL5643BW17 *City : Eindhoven, The Netherlands *Coord. : Obs : 5=B0 31' 44" E ; 51=B0 21' 58" N (ANWB paddestoel 20934 /= 21510) *ICQ : 116861315 *GSM-BEN : 06.24.84.90.77 -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.