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ID = 16661
United States of America (USA)
Brand: Common type USA tube/semicond.
Developer: General Electric Co. (GE); Bridgeport CT, Syracuse NY 
Tube type:  Thyratron   Power-supply 
Identical to 5559 = FG57 = PL5559 = PL57 = GL5559 = ST57
Similar Tubes
Other shape (e.g. bulb type):

Base UX-Base (4 Pins (2 thick, USA 1924, UX) (Codex=Br) Top contact with a cap.
Was used by Industrial
Filament Vf 5 Volts / If 4.6 Ampere / Indirect
Description This tube is a negative control mercury vapour type for use where it is desired to actuate the tube with a change in negative grid voltage. It requires relatively little power and is suitable for use in relay circuits where current flow is desired in the absence of grid excitation. Grid voltage -1.75 at 100 anode volts and -6.5 volts at 1000 anode volts. 
Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
x 74 x 169 mm / x 2.91 x 6.65 inch
Weight 125 g / 4.41 oz
Tube prices 1 Tube prices (visible for members only)
Information source Taschenbuch zum Röhren-Codex 1948/49   
5559: LAR
Larry Anderson

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5559: Valvo Röhrentaschenbuch 1957
Michael Schlör

5559: Valvo Röhrentaschenbuch 1957
Michael Schlör

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