Data set 01
1961 Tung Sol
Published operating points and test conditions from this source.
SECTION 3
Triode
Other
MaximumDiodeCurrent
1 mA
EachUnit
Capacitance
Grid To Plate Capacitance
2 pF
Triode
Voltage - Triode (with diode, heptode or hexode) ·Diode-Diode-Triode
3AV6
3AV6 seven-pin miniature twin-diode high-mu triode for radio detection, AVC rectification and audio voltage amplification, with a 3.15 V 600 mA series-string heater.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 3
- Base
- 7BT
- Socket code
- B7G
- Base pins
- 7
- Nominal heater
- 3.15 V / 600 mA
Description
3AV6 is described in the supplied Tung-Sol datasheet as a controlled-warm-up dual-diode high-mu triode equivalent to 6AV6. Published electrical ratings and operating characteristics were extracted from the supplied source.
Socket description
Miniature 7-contact
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- 7BT
- Socket code
- B7G
- Base pins
- 7
- Nominal heater voltage
- 3.15 V
- Nominal heater current
- 600 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
7BT - Terminal pinout
Electrical assignments shared by every tube using this base designation.
| Terminal | Section | Connection | Evidence |
|---|---|---|---|
| PIN11G1 | A | G1 — Control Grid EIA source label 1G1; independent manufacturer confirmation pending | Unverified EIA Base Connections, printed page 128, 7BT |
| PIN2K | A | K — Cathode EIA source label K; independent manufacturer confirmation pending | Unverified EIA Base Connections, printed page 128, 7BT |
| PIN3H | — | H — Heater EIA source label H; independent manufacturer confirmation pending | Unverified EIA Base Connections, printed page 128, 7BT |
| PIN4H | — | H — Heater EIA source label H; independent manufacturer confirmation pending | Unverified EIA Base Connections, printed page 128, 7BT |
| PIN52P | B | P — Plate (Anode) EIA source label 2P; independent manufacturer confirmation pending | Unverified EIA Base Connections, printed page 128, 7BT |
| PIN63P | C | P — Plate (Anode) EIA source label 3P; independent manufacturer confirmation pending | Unverified EIA Base Connections, printed page 128, 7BT |
| PIN71P | A | P — Plate (Anode) EIA source label 1P; independent manufacturer confirmation pending | Unverified EIA Base Connections, printed page 128, 7BT |
Section ratings
3 physical sections, each with unique specifications.
Section 1
Diode
X-ray radiationInterelectrode capacitances
- Max cathode current
- 1 mA
3AV6 diode unit 1, plate pin6, common cathode with triode. Manufacturer max CONTINUOUS DC diode plate current 1 mA. Separate characterization at 10 V DC gives typical 2 mA, not continuous service rating. Do not promote 1 mA into rectifier_nominal_output_current because it is a maximum diode current not a nominal rectifier output. Heater 3.15 V 0.6 A, heater-cathode max ±200 V total DC+peak. Diode coupling shield minimizes interaction with triode.
Section 2
Diode
X-ray radiationInterelectrode capacitances
No fixed ratings are recorded for this section.
3AV6 diode unit 2, plate pin5, common cathode with triode. Manufacturer max CONTINUOUS DC diode plate current 1 mA. Separate characterization at 10 V DC gives typical 2 mA, not continuous service rating. Diode2 plate-to-triode grid capacitance max 0.04 pF. Do not promote 1 mA into rectifier_nominal_output_current because it is a maximum diode current not a nominal rectifier output. Heater 3.15 V 0.6 A, heater-cathode max ±200 V total DC+peak.
Section 3
Triode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 62500 Ω
- Transconductance
- 0.0016 S
- Amplification factor
- 100
- Max plate voltage
- 330 V
- Max plate dissipation
- 0.55 W
- Rectifier warm-up time
- 11 s
3AV6 high-mu triode (Tung-Sol/RCA/Sylvania). Later design-maximum plate 330 V, dissipation 0.55 W; earlier Tung-Sol design-center 300 V and 0.5 W. Typical at plate 250 V grid -2 V: Ia 1.2 mA, mu 100, rp 62500 Ω, gm 0.0016 A/V. Alternate at plate 100 V grid -1 V: Ia 0.5 mA, mu 100, rp 80000 Ω, gm 0.00125 A/V. Cgp 2.0 pF, input 2.2 pF, output 1.2 pF shielded/0.8 pF unshielded. Maximum positive grid DC 0 V, heater-cathode ±200 V total DC+peak, positive DC heater-cathode 100 V. Cathode shared with two diode plates.
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.