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ID = 5197
United States of America (USA)
Tube type:  Double Triode 
Identical to 9AU7
Similar Tubes
Heater different:
  12AU7A ; 13D8 ; 7AU7 ; ECC82

Base Noval, 9 pin miniature (USA pico-9) B9A
Filament Vf 9.4 Volts / If 0.225 Ampere / Indirect

Durch Heizfaden-Mittenanschluss auch Betrieb mit 4.7 V und 0.45 A möglich.

Tube prices 2 Tube prices (visible for members only)
Information source Essential Characteristics, GE 1973   
  9AU7: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Michael Schlör
9AU7: From own collection
David Erali

9AU7: RTT Schwandt
Günther Stabe † 19.8.20

9AU7: RCA Tube Manual
Peter Hoddow

from Just Qvigstad

Usage in Models 18= 1958 ; 18= 1959? ; 3= 1959 ; 1= 1960?? ; 1= 1966?

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):41

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