MOLYBDENUM MATERIAL FOR DIODE ELECTRODE AND ITS MANUFACTURE

摘要

PROBLEM TO BE SOLVED: To provide a molybdenum material for diode electrodes and a manufac turing method whereby a long-life diode having a uniform quantity can be obtd. ;SOLUTION: A molybdenum(Mo) material for diode electrodes is incorporated in a diode 10 as Mo electrodes 2, 3 for sandwiching a diode chip 1 and provides a backward current of 17 nA or less with an applied potential of 200-1500 V. This Mo material for diode electrodes is made by heat-treating an Mo rod at 1000-2000°C to control so that crystal grain no. per unit area is 6500 grains/mm² or less.;COPYRIGHT: (C)1999,JPO