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P3580

 
    
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The P3580 is an audio output pentode for use in universal mains sets ie with or without mains transformers from a time when DC mains still existed.
Made by the Austrian company Triotron it was produced with the Ct8 base and the B7 for the British market.
The output is 4 Watts with a 320Ω cathode resistor and an anode load of 4,500Ω
The classic envelope is 49 mm in diameter, and excluding the B7 base pins is 113 mm tall.
References: 1043. Type P3580 was first introduced in 1936.

 

Pin Connections
B7
1
2
3
4
5
6
7
-
g1
g2
h
h
k,g3
a

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
26.0
0.2
250
250
-
36
4.5
Updated December14, 2012.
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