Voltage - Dual Triode (similar) ·Triode-Triode
6854
Bendix 6854 rugged hard-glass dual triode with 6.3 V 500 mA heater, 300°C bulb rating and 10,000-hour life expectancy.
- Sections
- 2
- Base
- -
- Socket code
- B9A
- Base pins
- 9
- Nominal heater
- 6.3 V / 500 mA
Description
Reliable hard-glass double triode.
Socket description
Small-button Noval 9-contact
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- B9A
- Base pins
- 9
- Nominal heater voltage
- 6.3 V
- Nominal heater current
- 500 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
Terminal pinout
Electrical assignments shared by every tube using this base designation.
No verified pinout is recorded for this base designation.
Section ratings
2 physical sections, each with unique specifications.
Section 1
Triode
- Plate resistance
- 6500 Ω
- Transconductance
- 0.005225 S
- Amplification factor
- 35
- Max plate voltage
- 300 V
- Max plate dissipation
- 1.5 W
- Max cathode current
- 20 mA
Bendix 6854 TE-47 high-reliability hard-glass dual triode, physical section 1. Max plate 300 V, dissipation 1.5 W, cathode current 20 mA, max positive grid 0 V, heater-cathode 300 V, grid circuit resistance 1 MΩ. Typical Class A1 at Va 150 V, Rk 240 Ω, Ia 8.2 mA, mu 35, rp 6500 Ω, gm 0.005225 A/V. Unshielded Cgp 1.7 pF, input 2.4 pF, output approx 1.1 pF, inter-plate coupling 0.10 pF. Heater 6.3 V 0.5 A total. Max bulb 300°C, life 10000 h, 9FV basing (not in canonical catalog).
Section 2
Triode
- Plate resistance
- 6500 Ω
- Transconductance
- 0.005225 S
- Amplification factor
- 35
- Max plate voltage
- 300 V
- Max plate dissipation
- 1.5 W
- Max cathode current
- 20 mA
Bendix 6854 TE-47 high-reliability hard-glass dual triode, physical section 2. Max plate 300 V, dissipation 1.5 W, cathode current 20 mA, max positive grid 0 V, heater-cathode 300 V, grid circuit resistance 1 MΩ. Typical Class A1 at Va 150 V, Rk 240 Ω, Ia 8.2 mA, mu 35, rp 6500 Ω, gm 0.005225 A/V. Unshielded Cgp 1.7 pF, input 2.4 pF, output approx 1.1 pF, inter-plate coupling 0.10 pF. Heater 6.3 V 0.5 A total. Max bulb 300°C, life 10000 h, 9FV basing (not in canonical catalog).
Source-dependent data
Operating conditions by source
Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.