इसी प्रकार के381

• 381
  • T-1 3/4 subminiature, miniature flanged lamp. 6.3 volts, 0.20 amps.
• 3810
  • T-3/4 subminiature, miniature flanged lamp. 1.5 volts, 0.010 amps.
• 3811
  • T-3/4 subminiature, miniature flanged lamp. 1.5 volts, 0.015 amps.