6AL5: Difference between revisions

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[[File:6AL5_Tube.jpg|thumb|300px|right|6AL5 Tube]]
[[File:6AL5_Tube.jpg|thumb|300px|right|6AL5 Tube]]
The '''6AL5''' (European type '''EAA91''')  is a [https://en.wikipedia.org/wiki/Perveance high-perveance] dual diode vacuum tube with a 6.3 V, 0.3 A heater.
The '''6AL5''' (European type '''EAA91''' or '''EB91''')  is a [https://en.wikipedia.org/wiki/Perveance high-perveance] dual diode vacuum tube with a 6.3 V, 0.3 A heater.
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The '''12AL5''' (European type '''HAA91''') is the same but has a 12.6 V, 0.15 A heater.  Both have a {{B9A base}}.
The '''12AL5''' (European type '''HAA91''') is the same but has a 12.6 V, 0.15 A heater.  Both have a {{B9A base}}.

Revision as of 03:33, 25 July 2019

6AL5 Tube

The 6AL5 (European type EAA91 or EB91) is a high-perveance dual diode vacuum tube with a 6.3 V, 0.3 A heater.
The 12AL5 (European type HAA91) is the same but has a 12.6 V, 0.15 A heater. Both have a B9A (Noval) miniature 9-pin base.

The 6AL5/12AL5 serves as the as the "disconnect diode" in the timebase circuit of many tube-era Tektronix scopes starting with the 511 in the 1940's and continuing through the 1960's in sweep plug-ins such as the 3B2 and other plug-ins such as Type C/Type CA.

Tek part number: 154-0016-00 (6AL5), 154-0038-00 (12AL5/HAA91)

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