Voltage Drop (typical)Tube Voltage Drop (estimate)30V
Max DC Output Current (total, not per-anode)Max DC Output Current60mA
Notes
Directly heated cathode with 4V/1A filament.
Dual-anode full-wave rectifier rated for 2x 500V at 60 mA or 2x 300V at 100 mA.
Maximum Ua x Ia product is 30,000 within the 300-500V range.
15 identical replacement types exist per Radiomuseum including types from multiple European manufacturers.
Produced from 1932, superseded by the AZ1 in 1935.
European B4 base (4-pin) with directly heated cathode — filament connects to center tap of HV transformer secondary.
Peak Inverse Voltage is not explicitly stated in the Telefunken/Valvo RGN1064 datasheet; PIV=1414 V is derived from the standard full-wave capacitor-input relation PIV = 2 × √2 × Va_max (500 Vrms). Matches the convention used for AZ12, UU4, UU5, EZ41 in this repo.
Vdrop ≈ 30V estimated from Telefunken/Valvo RGN1064 datasheet — 4V heater, 60mA rating, same family as AZ1/AZ11 (both measured at 28-30V per their I/V curves). Source: Telefunken RGN1064 datasheet.
Pin Layout — B4
1Anode 1
2Filament
3Anode 2
4Filament
Socket-Compatible Tubes ⚠ Not electrically compatible