Skip to main content

Tube cross-reference

2BU2 alternatives, equivalents, and replacements

Review exact electrical variations and directional substitutions recorded for the 2BU2 rectifier - tv line scan boost. Compare core specifications and verify every restriction before using a replacement.

Exact variations of 2BU2

These designations belong to the same electrical variation group. Their names may differ because of international standards, manufacturing tolerances, or materials, but they are recorded as electrically equivalent—not merely substitutes.

  • 2AH2

    Rectifier - TV Line Scan Boost

    Base
    12JB
    Socket
    B12C
    Base pins
    12
    Sections
    1
    Heater voltage
    2.5 V
    Heater current
    0.33 A
  • 2AS2

    Rectifier - TV Line Scan Boost

    Base
    Not recorded
    Socket
    B9A
    Base pins
    12
    Sections
    1
    Heater voltage
    2.5 V
    Heater current
    0.33 A

Verify before substituting

Matching a base or heater voltage is not enough to prove that two tubes are interchangeable. Check pin connections, heater current, maximum ratings, bias requirements, warm-up behavior, and the equipment manufacturer’s service documentation before making a substitution.

View the complete 2BU2 specifications →