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6BW4 — Rectifier, Noval | Tubeofile | Tubeofile
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6BW4
Rectifier — Noval
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Data: High
High quality — base, heater, all universal parameters present, and ≥50% of desirable parameters filled in. Safe to use for design decisions.
↗ r-type.org
↗ TDSL
↗ Radiomuseum
Known Equivalents & Substitutes
12BW4
Electrical Specifications
Absolute Maximum
Anode Voltage (max)
Max AC Plate Supply Voltage Each Plate (RMS)
450
V
Heater-to-Cathode Voltage (max)
Max Heater-Cathode Voltage (Heater Negative, DC)
450
V
Rectifier
Peak Inverse Voltage
Maximum Peak Inverse Plate Voltage
1,275
V
Voltage Drop (typical)
Tube Voltage Drop
40
V
Notes
12BW4 is identical except for heater ratings (12.6V at 0.45A).
Predecessor type is 7Z4 (same function, different base).
May be mounted in any position.
Maximum heater-cathode voltage (heater negative, DC) is 450V — relevant when cathode is elevated above ground potential.
Capacitor-input filter operation requires minimum 82 ohm effective plate supply resistance per plate with 40uF max filter capacitor.
Pin Layout — Noval
1
2
3
4
5
6
7
8
9
1
Anode 2
2
No Connection
3
No Connection
Socket-Compatible Tubes
⚠ Not electrically compatible
25DK3
6S4P
AL860
EC88
EL803
EZ80
EZ81
References
https://frank.pocnet.net/sheets/127/6/6BW4.pdf
Max C-input Filter Capacitor
Max Filter Input Capacitor
40
µF
Peak Anode Current (surge)
Max Steady State Peak Plate Current Each Plate
350
mA
Max DC Output Current (total, not per-anode)
Max DC Output Current
100
mA
Min Series Resistance (C-input)
Min Effective Plate Supply Resistance Each Plate
82
Ω
other
Max Transient Peak Plate Current Each Plate
Max Transient Peak Plate Current Each Plate
2
A
Heater
Heater Voltage
Heater Voltage
6.3
V
Heater Current
Heater Current
0.9
A
4
Heater
5
Heater
6
No Connection
7
Anode 1
8
No Connection
9
Cathode