6S3P — Small Signal Triode, Noval | Tubeofile | Tubeofile← BrowseData: HighHigh quality — base, heater, all universal parameters present, and ≥50% of desirable parameters filled in. Safe to use for design decisions.
Known Equivalents & Substitutes
Similar Tubes (Not Drop-In Compatible)
Higher-frequency variant — also listed as a substitute for EC86/EC88 in Soviet references Philips UHF triode — Soviet 6S4P is listed as substitute but 6S3P is closer to EC86 Electrical Specifications
Absolute Maximum
Anode Voltage (max)Anode Voltage (max)180V
Anode Dissipation (max)Anode Dissipation (max)2.2W
Typical Operating
Anode Voltage (typical)Anode Voltage150V
Grid 1 Bias VoltageGrid Voltage-1V
Notes
- Cyrillic designation: 6С3П. Foreign_substitutes.json confirms: EC86 → 6S3P, 6S4P.
- Designed for VHF/UHF front-end stages, particularly grounded-grid RF amplifiers in FM/TV receivers.
- Frame-grid construction gives very high transconductance (up to 15 mA/V) for a small-signal triode.
- Internal shield connected to pin 9 provides inter-element shielding at UHF frequencies.
Pin Layout — Noval
1Anode
2No Connection
3Cathode
Socket-Compatible Tubes ⚠ Not electrically compatible
Anode CurrentAnode Current
14mA
Anode ResistanceAnode Resistance3,300Ω
TransconductanceTransconductance15mA/V
Amplification Factor (μ)Amplification Factor (μ)50—
Capacitances
Grid-to-Plate CapacitanceGrid-to-Plate Capacitance1.6pF
Input CapacitanceInput Capacitance4.5pF
Output CapacitanceOutput Capacitance1.6pF
Heater
Heater VoltageHeater Voltage6.3V
Heater CurrentHeater Current0.35A