6BA8

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The 6BA8  (P/N 154-0163-00) is a triode-pentode combo vacuum tube with a B9A (Noval) miniature 9-pin base.

The 6BA8 is used in the 59, 2A61, 72, 3A72, and 3A2 plug-ins and the 125 power supply for the 122 amplifier.

Some instruments using part 6BA8

Instrument Manufacturer Class Description Introduced
2A61 Tektronix Plug-in Differential amplifier plug-in 1963
3A2 Tektronix Plug-in 500 kHz dual-trace amplifier plug-in 1964
3A72 Tektronix Plug-in Dual channel amplifier plug-in 1961
59 Tektronix Plug-in 400 kHz low-cost amplifier plug-in 1960

Datasheet

Links

  • 6BA8 @ radiomuseum.org