6BH11

Name: 6BH11
Brand: RCA

Compound (multi-section) — Duodekal — RCA

Data: HighHigh quality — base, heater, all universal parameters present, and ≥50% of desirable parameters filled in. Safe to use for design decisions.

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Known Equivalents & Substitutes

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Electrical Specifications

Section 1 — Triode (each unit)

Absolute Maximum

Anode Voltage (max)Plate Voltage (max)330V

Anode Dissipation (max)Plate Dissipation (max)2.5W

Max Grid ResistorGrid Resistor (max)2.2MΩ

Typical Operating

Anode Voltage (typical)Plate Voltage125

Notes

The pentode section is rated for two distinct services: as a horizontal-deflection oscillator (Va_max=350V, Vg2_max=330V, Ik_peak=300mA, Pa_max=2.5W) and as a Class A1 amplifier (Va_max=300V, Vg2_max=300V, Pa_max=3W).
Pentode Grid No.2 max input: 0.6W for Vg2 up to 150V; higher voltages require consulting the screen input rating curve.
Pin 11 serves as both Pentode Cathode and Pentode Grid No.3 (suppressor connected to cathode internally), with internal shield.
Heater-to-cathode voltage: ±200V peak, 100V average maximum.
The twin triode sections are identical medium-mu units (μ=46, ra≈5.4kΩ). Both sections have identical characteristics.

Pin Layout — Duodekal

1Heater

2

References