Please click your language flag. Bitte Sprachflagge klicken.


Information - Help 
ID = 34913
Brand: Siemens (& Halske, -Schuckert Werke SSW, Electrogeräte); Berlin, München
Tube type:  IC - Integrated Circuit   Audio Frequency 
Identical to TAA521 = SN72709 = µA709
Similar Tubes
Normally replaceable-slightly different:
  MAA503 ; MAA504 ; N5709T
Other characteristic (electr. data):
First Source (s)
Oct.1966 : -- Collector info (Sammler)
Successor Tubes TBA221  

Base Wires
Description Operational Amplifier 
Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
10 x 6 x mm / 0.39 x 0.24 x inch
Weight 1 g / 0.04 oz

TAA521: Siemens Halbleiter-Beispiele 1973
Günther Stabe † 19.8.20

a709_s1.gif TAA521: Elektor 1977
Günther Stabe † 19.8.20

More ...
TAA521: Siemens Integrierte Schaltungen 1972/73
Thomas Günzel † 1.8.22

More ...
Usage in Models 1= 1974? ; 1= 1974 ; 1= 1975?

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):3

Collection of



You reach this tube or valve page from a search after clicking the "tubes" tab or by clicking a tube on a radio model page. You will find thousands of tubes or valves with interesting links. You even can look up radio models with a certain tube line up. [rmxtube-en]

Data Compliance More Information