MIL-PRF-1/1580 Complete Document History
Electron Tube, Power Type 8621

Complete Current Edition:
   REVISION F - Electron Tube, Power Type 8621 - April 8, 2016
   REV F VALIDATION 1 - VALIDATION NOTICE 1 FOR REVISION 1 - Feb. 10, 2021

Obsolete Revision Information:
   REVISION E - ELECTRON TUBE, POWER TYPE 8621 - Aug. 29, 2011
   REVISION D - ELECTRON TUBE, POWER TYPE 8621 - Aug. 17, 2004
   DRAFT REVISION D - OBSOLETE DRAFT DOCUMENT - June 2, 2004
   REVISION C - ELECTRON TUBE, POWER TYPE 8621 - July 9, 1999