Full-wave rectifier but Rimlock base and 6.3V heater — different base and heater voltage
Electrical Specifications
Absolute Maximum
Anode Voltage (max)Max AC Voltage per Anode (RMS)350V
Rectifier
Peak Inverse VoltagePeak Inverse Voltage1,000V
Voltage Drop (typical)Forward Voltage Drop (read from shared AZ1 Abb. 3 I/V curve at 62.5 mA per plate)29V
Max DC Output Current (total, not per-anode)Max DC Output Current125
Notes
The AZ31 uses a 4V heater (the 'A' prefix in Mullard-Philips convention indicates 4V heater). This distinguishes it from the EZ-series (6.3V) and U-series (100mA series heater) rectifiers.
Brans Vademecum lists equivalents in table IId: 5Y3G/GT, 5Y4G/GT, EZ11, EZ40, EZ41, 6V4, and others — but most differ in heater voltage and/or base type, so they are not drop-in replacements.
CV2862 is the British military designation.
Maximum AC voltage per anode approximately 350V RMS. Maximum DC output current approximately 125mA.
Vdrop=29 V is read from the AZ1 single-plate I/V characteristic (Philips datasheet Abb. 3, Ia per anode vs Va — AZ31 shares the AZ1 curve per Philips handbook note 'For the data and curves of the AZ31, see AZ1') at 62.5 mA per plate (= Idc_max 125 mA / 2 for full-wave). The datasheet does not state a discrete Vdrop value.
Pin Layout — Octal
1No Connection
2Heater
3Anode 1
4
Socket-Compatible Tubes ⚠ Not electrically compatible