6J32P — Small Signal Pentode, Noval | Tubeofile

6J32P

Small Signal Pentode — Noval

Svetlana

Known Equivalents & Substitutes

EF8662676CF86BK8EF806SZ729CV2901

Electrical Specifications

Section 1 — Pentode

Absolute Maximum

Anode Voltage (max)Anode Voltage (max)300V

Screen Voltage (max)Screen Voltage (max)200V

Anode Dissipation (max)Anode Dissipation (max)1W

Screen Dissipation (max)Screen Dissipation (max)0.2W

Cathode Current (max)Cathode Current (max)6mA

Heater-to-Cathode Voltage (max)Heater-to-Cathode Voltage (max)100V

Max Grid ResistorMax Grid Resistor3MΩ

Typical Operating

Anode Voltage (typical)Anode Voltage250V

Screen Voltage (typical)Screen Voltage140V

Grid 1 Bias VoltageGrid 1 Bias Voltage-2V

Anode CurrentAnode Current3mA

Screen CurrentScreen Current

Capacitances

Grid-to-Plate CapacitanceGrid-to-Plate Capacitance0.025pF

Grid-to-Cathode CapacitanceGrid-to-Cathode Capacitance3.8pF

Anode-to-Cathode CapacitanceAnode-to-Cathode Capacitance5.4pF

Section 2 — Triode Strapped

Absolute Maximum

Anode Voltage (max)Anode Voltage (max)200V

Anode Dissipation (max)Anode Dissipation (max)1W

Cathode Current (max)Cathode Current (max)6mA

Typical Operating

Anode Voltage (typical)Anode Voltage250V

Heater

Heater VoltageHeater Voltage6.3V

Heater CurrentHeater Current0.2A

Notes

Russian designation is 6Ж32П (6Zh32P). The Latin transliteration 6J32P is used internationally.
Pins 1 and 7 are internal metallic shields — must be grounded for lowest noise performance, identical to EF86 shielding arrangement.
Russian spec gives gm = 1.8 ± 0.5 mA/V vs Western EF86 spec of 2.0 mA/V; this reflects wider Soviet production tolerances rather than a design difference.
Rg_max = 3 MΩ per Russian datasheet (applies at all operating points), vs EF86 which allows 10 MΩ at Pa < 0.2 W.
Svetlana EF86 datasheet specifies cathode bias resistor of 1 kΩ (pentode) or 3.9 kΩ (triode); some Russian sources cite 1.5 kΩ for pentode — verify against specific circuit requirements.
Triode-strapped data from Svetlana EF86 datasheet (manufacturer data): Va=250V, Rk=3.9kΩ, Ia=0.65mA, ra≈65kΩ, rl=220kΩ. Schlangen measured values for EF86 (μ=33, gm=2.0, rp=16.5kΩ) represent a different operating point.
EF806S is a selected low-noise variant with tighter tolerances — not identical but pin-compatible.

Pin Layout — Noval

1Screen Grid

2Internal Shield

3Cathode

Socket-Compatible Tubes ⚠ Not electrically compatible

References