B2 - Schoonover, Inc.

Metal-Ceramic Connections
Vacuum Feedthroughs
Metal-Ceramic Connections
♦ High grade materials allow repeated bakings at 400 ¡C
Technical Data
Voltage 1) 12 kV 10 kV 20 kV 30 kV
Ordering Information
214-161 214-162 214-163 214-164
Insulator Al 2 O 3 Al 2 O 3 Al 2 O 3 Al 2 O 3
Connection
a Fe-Ni Fe-Ni Fe-Ni Fe-Ni
b Fe-Ni stainless steel stainless steel stainless steel
Bakeout temperature ¡C 400 400 400 400
Tightness mbar l/s 1 x 10 -10 1 x 10 -10 1 x 10 -10 1 x 10 -10
Weight g 5 12 25 90
1) Permissible operating voltage (50 Hz) as a function of the
surface-leakage path under normal conditions (1000 mbar,
50% relative air humidity) at which arcs do not yet occur.
In vacuums lower than 10-4 mbar, these values can be
increased by 80%. The absolute value for welded-in
electrodes depends on the electrode geometry.
B7
B7.17