NSN: 6240-01-579-3758

Technical Characteristics

• Special Features

  base id is red;high luminance;base marking 28gah;standard type lamp;constructed using a plated brass lamp base and a glass filter envelope;configuration equivalent to a standard t-1/3/4 flange base lamp;overall length 0.625 inches nominal;meets nvis color

• Overall Length

  0.270 inches nominal

• Bulb Diameter

  0.216 inches nominal

• Voltage Rating

  28.000 volts nominal

• Average Life Rating In Hours

  1000.0

• Burning Position

  horizontal

• Part Name Assigned By Controlling Agency

  nvis lamp, model 400638

• Current Rating For Which Designed

  40.000 milliamperes nominal

• Bulb Light Transmission Characteristic

  translucent

• End Item Identification

  compass, magnetic mounted

• Rated Average Life

  hours

• Bulb Style

  e (eliptical)

• Emitted Light Characteristic

  green

• ~1

  and radiance requirements per mil-std-3009;m