Same Octal 6S base and pinout, but higher current rating (125 mA DC vs 100 mA) and higher heater current (1.2 A vs 0.9 A). Electrically similar rather than an exact drop-in.
Same function (full-wave rectifier, 6.3 V heater) but B7G miniature base — not pin-compatible with Octal.
Electrical Specifications
Absolute Maximum
Anode Voltage (max)AC Plate Voltage per Plate (max RMS, full-wave)350V
Heater-to-Cathode Voltage (max)Heater-to-Cathode Voltage (max)500V
Rectifier
Peak Inverse VoltagePeak Inverse Voltage (same as 6X5 family)1,250V
Voltage Drop (typical)Tube Voltage Drop (approx, from reference table)24
Notes
Ken-Rad datasheet (RMA release #100, 11-1-36) explicitly states: 'The 6W5G is a glass tube equipped with an octal base and is interchangeable with the 6X5 and 6X5G.' — treat as a drop-in equivalent of the 6X5 family.
JEDEC base 6S: standard 6-pin Octal (pins 4 and 6 are unused). Same pinout as 6X5/6X5-G.
Datasheet states 100 mA maximum load current in full-wave operation at 350 V RMS per plate. The six-volt rectifier reference table lists 90 mA; the Ken-Rad datasheet value (100 mA) is used here.
Tube voltage drop of 24 V at full load is taken from the curated six-volt rectifier reference table (references/six_volt_rectifiers.json); the original Ken-Rad datasheet does not state it explicitly.
Heater-to-cathode insulation rated at 500 V DC — slightly higher than typical 6.3 V rectifiers (450 V) and reflects the automobile-receiver origin.
Automobile-radio heritage: in a 6 V car receiver the heater was powered from the battery/vibrator supply shared with all other tubes, which required a rugged, high-Vhk indirectly-heated cathode.
Pin Layout — Octal
1No Connection
2Heater
3Anode 1 (Plate 1)
4
Socket-Compatible Tubes ⚠ Not electrically compatible