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12B4: Difference between revisions
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It is used in the [[551]] and [[555]]. | It is used in the [[551]] and [[555]]. | ||
It is used as a pass tube in the power supply of the [[513]]. | |||
* [http://w140.com/12B4A.pdf 12B4A Datasheet (PDF)] | * [http://w140.com/12B4A.pdf 12B4A Datasheet (PDF)] | ||