David,
>From Victoreen 1997 catalog:
SGCA- D.C. firing voltage: 1kV - 12 kV
Tol: +/- 10% for all
max energy/pulse: 100 J for all
SGCB- D.C. firing voltage 12kV - 20kV
SGCC- D.C. firing voltage 20kV - 35kV
Victoreen is also an excellent source for kV-range resistors
no prices listed in the catalog
6000 Cochran Road
Cleveland 44139
tel) 440 248 9300
fax) 440 248 9301
www.victoreen-dot-com
Ralph Zekelman