Tube cross-reference

12HU8 alternatives, equivalents, and replacements

Review exact electrical variations and directional substitutions recorded for the 12HU8 power - pentode (not beam). Compare core specifications and verify every restriction before using a replacement.

Replacement tubes for 12HU8

The following tubes are recorded as possible replacements for 12HU8. This direction does not establish that 12HU8 can replace them.

PLL80

Power - Pentode (NOT beam)

Foreign To American

The database records PLL80 as a possible replacement for12HU8.

No special restrictions are recorded for this substitution.

Specification	Original tube	Replacement
Tube type	Power - Pentode (NOT beam)	Power - Pentode (NOT beam)
Construction	Pentode-Pentode	Pentode-Pentode
Base	Not recorded	Not recorded
Socket	Not recorded	Not recorded
Base pins	Not recorded	Not recorded
Sections	2	2
Heater voltage	12 V	12 V
Heater current	0.3 A	0.3 A

Where 12HU8 can be used as the replacement

In these recorded relationships, 12HU8 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 12HU8.

PLL80

Power - Pentode (NOT beam)

American To Foreign

The database records 12HU8 as a possible replacement forPLL80.

No special restrictions are recorded for this substitution.

Specification	12HU8 replacement	Original tube
Tube type	Power - Pentode (NOT beam)	Power - Pentode (NOT beam)
Construction	Pentode-Pentode	Pentode-Pentode
Base	Not recorded	Not recorded
Socket	Not recorded	Not recorded
Base pins	Not recorded	Not recorded
Sections	2	2
Heater voltage	12 V	12 V
Heater current	0.3 A	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 12HU8 specifications →