12AU6

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The 12AU6  (European: HF94) (P/N 154-0040-00) is an RF pentode vacuum tube for up to ~50 MHz with a miniature B7G 7-pin base. Apart from the 12 V heaters, it is the same as the 6AU6 (EF94).

The 8426 is an improved version used in the Type O.

Tek part number:

  • 154-0040-00 (single tube)
Aged/Checked/Matched Pair Details
Used in Tek Part# S/N Range
112 157-0012-00 All
512 (V3,V8) 157-0012-00 All
575,112,G,K,L,Z,C,G 157-0038-00 All
575, Type G Plug-in 157-0050-00 All
Type G Plug-in (V3477,V3487) 157-0055-00 All
O 157-0071-00 All
575(V214, V224, V254, V264) 157-0017-00 All
? 157-0029-00 N/A
Type K Plug-in (V6101, V6111) 157-0031-00 Upto-353
Type Z Plug-in (V7634, V8634) 157-0065-00 All
Type H Plug-in 157-0076-00 All
Type O Plug-in 157-0077-00 All
Type H, M Plug-in 157-0078-00 All
Type H Plug-in 157-0114-00 Post 1965

157-0012-00 has been replaced by 157-0038-00.

157-0029-00 has been replaced by 157-0038-00.

157-0065-00 has been replaced by 157-0038-00.

157-0017-00 has been replaced by 157-0050-00.

157-0055-00 has been replaced by 157-0050-00.

Reference:

Tube aging procedure / Selection and checking procedure

Pictures

Links

Some instruments using part 12AU6

Instrument Manufacturer Class Model Description Introduced
112 Tektronix Amplifier 112 Differential amplifier 1949
1L10 Tektronix Plug-in 1L10 1 MHz to 36 MHz Spectrum Analyzer 1965
1L20 Tektronix Plug-in 1L20 4.2 GHz Spectrum Analyzer plug-in 1965
1L60 Tektronix Plug-in 1L60 150-250 MHz Spectrum Analyzer plug-in (?)
3L10 Tektronix Plug-in 3L10 1 - 36 MHz Spectrum Analyzer Plug-In 1965
512 Tektronix Oscilloscope 512 Early 2 MHz scope 1948
545 Tektronix Oscilloscope 545 30 (33) MHz oscilloscope 1955
547 Tektronix Oscilloscope 547 50 MHz oscilloscope 1964
549 Tektronix Oscilloscope 549 30 MHz storage oscilloscope 1965
556 Tektronix Oscilloscope 556 50 MHz dual beam scope 1966
575 Tektronix Curve Tracer 575 Curve tracer for transistors 1957
581 Tektronix Oscilloscope 581 100 (95) MHz oscilloscope 1959
585 Tektronix Oscilloscope 585 100 (95) MHz oscilloscope 1959
81 Tektronix Plug-in Type 81 plug-in adapter 1960
A Tektronix Plug-in Type A 20 MHz amplifier plug-in 1954
B Tektronix Plug-in Type B 20 MHz amplifier plug-in 1959
C Tektronix Plug-in Type (53)C Dual-trace 8.5 (24) MHz amplifier 1954
G Tektronix Plug-in Type G 20 MHz differential amplifier 1955
H Tektronix Plug-in Type H 15 MHz amplifier plug-in 1958
K Tektronix Plug-in Type K 30 MHz amplifier plug-in 1955
L Tektronix Plug-in Type L High-sensitivity 30 MHz amplifier 1957
M Tektronix Plug-in Type M 20 MHz quad-channel amplifier 1962
ML Tektronix Plug-in ML High-sensitivity 30 MHz amplifier 1962
N Tektronix Plug-in Type N Sampling system plug-in 1960
O Tektronix Plug-in Type O Dual opamp plugin 1962
R Tektronix Plug-in Type R Tranistor rise-time test set 1958
S Tektronix Plug-in Type S Diode recovery tester plug-in 1960
Z Tektronix Plug-in Type Z Comparator preamp plug-in 1960