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7HG8 alternatives, equivalents, and replacements

Review exact electrical variations and directional substitutions recorded for the 7HG8 voltage radio detector converter. Compare core specifications and verify every restriction before using a replacement.

Exact variations of 7HG8

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.

  • 8HG8

    Voltage Triode Pentode

    Base
    Not recorded
    Socket
    Not recorded
    Base pins
    Not recorded
    Sections
    2
    Heater voltage
    8 V
    Heater current
    0.3 A
  • PCF86

    Voltage Radio Detector Converter

    Base
    9MP
    Socket
    B9A
    Base pins
    9
    Sections
    2
    Heater voltage
    8 V
    Heater current
    0.3 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 7HG8 specifications →