Hi all, I'm using a 9.1 zener diode with 115mA flowing through it. It is excessive heat. The datasheet shows the following information that does not match: 3 Watt Plastic Surface Mount Zener Voltage Regulator (1SMB5913BT3 Series) Vz: 9.1V Izt: 41.2mA Izmax(dc): 164mA Thus, the nominal power dissipation for this diode is Vz.Izmax= 1,5W and not 3W. Is the datasheet wrong? Thanks in advance. -- View this message in context: http://old.nabble.com/Zener-diode-heating-tp28081945p28081945.html Sent from the PIC - [EE] mailing list archive at Nabble.com. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist