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''' 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.
{{Vacuum Tube
|Type=Double Diode
|Number=6AL5/12AL5
|EuroNumber=EAA91/EB91/HAA91
|Part_nos=154-0016-00, 154-0038-00
|Description=[https://en.wikipedia.org/wiki/Perveance high-perveance] dual diode
|Used_in=181;535A;545A;581A;585A;551;316;317;502A;516
|Designers=
}} with a 6.3 V, 0.3 A heater.
<br />
<br />
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}}.


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
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 1940s and continuing through the 1960s in sweep plug-ins such as the [[3B2]] and other plug-ins such as [[C|Type C]]/[[CA|Type CA]].
and continuing through the 1960's in sweep plug-ins such as the [[3B2]] and other plug-ins such as [[C|Type C]]/[[CA|Type CA]].


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

Revision as of 03:19, 18 August 2021

6AL5 Tube

The 6AL5/12AL5  (European: EAA91/EB91/HAA91) (P/N 154-0016-00, 154-0038-00) 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 1940s and continuing through the 1960s 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)

Aged/Checked/Matched Pair Details
Used in Tek Part# S/N Range
535A, 545A, 585A 157-0075-00 (12AL5) All
316, 317, 502A, 516 157-0104-00 (6AL5) All
53X, 54X series, 551, 580 157-0104-02 (6AL5) All

Reference:

Tube aging procedure / Selection and checking procedure

Data and Links

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