12B4: Difference between revisions
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{{Vacuum Tube | {{Vacuum Tube | ||
|Type=Triode | |Type=Triode | ||
|Number=12B4 | |Number=12B4(A) | ||
|EuroNumber= | |EuroNumber= | ||
|RussianNumber= | |RussianNumber= | ||
|Part_nos= | |Part_nos=154-0044-00 | ||
|Description=power triode | |Description=power triode | ||
|Used_in=126;310;310A;316;317;502;502A;526;541;541A;535;535A;545;545A;546;547;549;551;555;513;581;581A;585;585A; | |Used_in=126;310;310A;316;317;502;502A;526;541;541A;535;535A;545;545A;546;547;549;551;555;513;581;581A;585;585A; | ||
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The 12B4 is used in the [[126]], [[551]], and [[555]], and as a pass tube in the power supply of the [[513]], [[581]] and [[585]]. | The 12B4 is used in the [[126]], [[551]], and [[555]], and as a pass tube in the power supply of the [[513]], [[581]] and [[585]]. | ||
The 12B4A (154-0044-00) is similar except for the controlled heater warm-up, suitable for use in conjunction with other 600 mA types. | |||
==Data== | ==Data== | ||
* [https://w140.com/12B4A.pdf 12B4A Datasheet] | * [https://w140.com/12B4A.pdf 12B4A Datasheet] | ||
* [[tube:12b4|12B4]] @ radiomuseum.org | * [[tube:12b4|12B4]] / [[tube:12b4a|12B4A]] @ radiomuseum.org | ||
==Pictures == | ==Pictures == | ||
Revision as of 11:40, 12 July 2022
The 12B4(A) (P/N 154-0044-00) is a power triode vacuum tube with a B9A (Noval) miniature 9-pin base. It has 5.5 W maximum plate dissipation, 1000 V peak plate voltage, and and 105 mA peak cathode current.
The 12B4 is used in the 126, 551, and 555, and as a pass tube in the power supply of the 513, 581 and 585.
The 12B4A (154-0044-00) is similar except for the controlled heater warm-up, suitable for use in conjunction with other 600 mA types.
Data
- 12B4A Datasheet
- 12B4 / 12B4A @ radiomuseum.org
Pictures
-
12B4 Tube
