Value 300 to 650 420 Bialkali 34 Borosilicate glass Linear focused 10 3 7 JEDEC No.B12 *43 E678 *12A(supplied) Unit nm nm mm dia. pF pF MAXIMUM RATINGS (Absolute Maximum Values) Supply Voltage Avarage Anode Current Ambient Temperature Parameter Between Anode and Cathode Between Anode.