Data set 01
1960 RCA Industrial and Communications Types
Published operating points and test conditions from this source.
SECTION 1
Beam Power
Characteristics
Heater Voltage
6.3 V
Power - TV Vertical Output ·BeamPower
6AQ5A
Miniature beam-power output tube for automobile and AC-operated receivers, also usable triode-connected as a television vertical-deflection amplifier.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- 7BZ
- Socket code
- B7G
- Base pins
- 7
- Nominal heater
- 6.3 V / 450 mA
Description
Miniature beam-power output tube for automobile and AC-operated receivers; also usable triode-connected as a television vertical-deflection amplifier.
Socket description
Miniature 7-contact
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- 7BZ
- Socket code
- B7G
- Base pins
- 7
- Nominal heater voltage
- 6.3 V
- Nominal heater current
- 450 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
7BZ - Terminal pinout
Electrical assignments shared by every tube using this base designation.
| Terminal | Section | Connection | Evidence |
|---|---|---|---|
| PIN1Pin 1 | A | G1 — Control Grid | Verified Tung-Sol 6AQ5/6AQ5A 7BZ basing; manufacturer pinout |
| PIN2Pin 2 | A | G3 — Suppressor GridGroup BZ2 | Verified Tung-Sol 6AQ5/6AQ5A 7BZ basing; manufacturer pinout |
| PIN2Pin 2 | A | K — CathodeGroup BZ2 | Verified Tung-Sol 6AQ5/6AQ5A 7BZ basing; manufacturer pinout |
| PIN3Pin 3 | — | H — Heater | Verified Tung-Sol 6AQ5/6AQ5A 7BZ basing; manufacturer pinout |
| PIN4Pin 4 | — | H — Heater | Verified Tung-Sol 6AQ5/6AQ5A 7BZ basing; manufacturer pinout |
| PIN5Pin 5 | A | P — Plate (Anode) | Verified Tung-Sol 6AQ5/6AQ5A 7BZ basing; manufacturer pinout |
| PIN6Pin 6 | A | G2 — Screen Grid | Verified Tung-Sol 6AQ5/6AQ5A 7BZ basing; manufacturer pinout |
| PIN7Pin 7 | A | G1 — Control Grid | Verified Tung-Sol 6AQ5/6AQ5A 7BZ basing; manufacturer pinout |
Section ratings
1 physical section, each with unique specifications.
Section 1
Beam Power
X-ray radiationInterelectrode capacitances
- Plate resistance
- 52000 Ω
- Transconductance
- 0.0041 S
- Amplification factor
- 9.5
- Max plate voltage
- 275 V
- Max screen voltage
- 275 V
- Max plate dissipation
- 12 W
- Max screen dissipation
- 2 W
- Max cathode current
- 40 mA
- Rectifier max heater-cathode voltage
- 200 V
Promoted from published ratings/characteristics; identical repeated sections compressed where applicable.
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.
Data set 02
1965 Westinghouse Data Book
Published operating points and test conditions from this source.
SECTION 1
Beam Power
Characteristic
HeaterOrFilamentVoltage
6.3 V
HeaterOrFilamentCurrent
450 mA
Transconductance
4100 uS
Input Capacitance
8.5 pF
Output Capacitance
8.5 pF
Other
Plate Voltage
250 V
ClassA
Screen Voltage
250 V
ClassA
Plate Current
45 mA
ClassA
Screen Current
4.5 mA
ClassA
Load Resistance
5000 ohm
ClassA
Power Output
4.5 W
ClassA
PushPullPowerOutput
14 W
TwoTubes;PushPull;ClassAB
Grid Voltage
-12.5 V
ClassA
Data set 03
1966 Tung Sol Electronic Tubes 1 of 4
Published operating points and test conditions from this source.
SECTION 1
Beam Power
Characteristic
Heater voltage
6.3 V
Published table
Heater current
450 mA
Published table
Plate resistance
52000 ohm
Published table
Transconductance
4200 µS
Published table
Heater warm-up time
11 s
Published table
Other
Plate voltage
250 V
ClassA
Screen voltage
250 V
ClassA
Zero-signal plate current
45 mA
ClassA
Maximum-signal screen current
7 mA
ClassA
Vertical-deflection maximum peak plate voltage
1100 V
VerticalDeflection
Maximum average cathode current
40 mA
VerticalDeflection
Maximum peak cathode current
115 mA
VerticalDeflection
Data set 04
1968 General Electric Co
Published operating points and test conditions from this source.
SECTION 1
Beam Power
Other
Peak Positive Pulse Plate Voltage
1100 V
TriodeConnection;VerticalDeflection
Data set 05
1971 RCA HB3 Binder 3 of 7
Published operating points and test conditions from this source.
SECTION 1
Beam Power
Other
Heater voltage
6.3 V
Nominal
Heater current
450 mA
Nominal
Maximum plate voltage
250 V
Promoted published value
Maximum screen voltage
250 V
Promoted published value
Maximum plate dissipation
12 W
Promoted published value
Maximum screen dissipation
2 W
Promoted published value
PLATE VOLTAGE
250 V
Maximum Ratings, Design-Maximum Values:
GRID-No.2 (SCREEN-GRID) VOLTAGE
250 V
Maximum Ratings, Design-Maximum Values:
GRID-No.2 INPUT
2 W
Maximum Ratings, Design-Maximum Values:
PLATE DISSIPATION
12 W
Maximum Ratings, Design-Maximum Values:
Heater negative with respect to cathode.
100 V
Maximum Ratings, Design-Maximum Values:
Heater positive with respect tp cathode.
100 V
Maximum Ratings, Design-Maximum Values:
Heater Voltage
6.3 V
Typical Operation and Characteristics:
Plate Voltage
250 V
Typical Operation and Characteristics:
Grid-No.2 Voltage
250 V
Typical Operation and Characteristics:
Grid-No.l (Control-grid) Voltage
-12.5 V
Typical Operation and Characteristics:
Peak AF Grid-No.l Voltage
12.5 V
Typical Operation and Characteristics:
Zero-Signal Plate Current
45 mA
Typical Operation and Characteristics:
Max.-Signal Plate Current
47 mA
Typical Operation and Characteristics:
Zero-Signal Grid-No.2 Current
4.5 mA
Typical Operation and Characteristics:
Max.-Signal Grid-No.2 Current
7 mA
Typical Operation and Characteristics:
Characteristic
Plate resistance
52000 ohm
Promoted published value
Transconductance
4100 uS
Promoted published value
Voltage
20 V
Current at
0.45 V
Data set 06
1971 RCA HB3 Binder 4 of 7
Published operating points and test conditions from this source.
SECTION 1
Beam Power
Other
Heater voltage nominal
6.3 V
Heater current
600 mA
Maximum plate voltage
250 V
ClassA1
Maximum screen voltage
250 V
ClassA1
Maximum screen input
2 W
ClassA1
Maximum plate dissipation
12 W
ClassA1
Plate voltage
250 V
ClassA1
Screen voltage
250 V
ClassA1
Control-grid voltage
-12.5 V
ClassA1
Plate resistance
52000 ohm
ClassA1
Transconductance
4800 µS
ClassA1
Zero-signal plate current
45 mA
ClassA1
Maximum-signal power output
4.5 W
ClassA1
Plate voltage
250 V
ClassAB1;PushPull;TwoTubes
Screen voltage
250 V
ClassAB1;PushPull;TwoTubes
Control-grid voltage
-15 V
ClassAB1;PushPull;TwoTubes
Effective load resistance plate-to-plate
10000 ohm
ClassAB1;PushPull;TwoTubes
Maximum-signal power output
10 W
ClassAB1;PushPull;TwoTubes
Total harmonic distortion
5 %
ClassAB1;PushPull;TwoTubes
Maximum peak positive-pulse plate voltage
1100 V
VerticalDeflectionAmplifier;TriodeConnection
Peak cathode current
105 mA
VerticalDeflectionAmplifier;TriodeConnection
DC cathode current
35 mA
VerticalDeflectionAmplifier;TriodeConnection
Plate dissipation
9 W
VerticalDeflectionAmplifier;TriodeConnection
Data set 07
1975 RCA RC30
Published operating points and test conditions from this source.
SECTION 1
Beam Power
Other
Heater Voltage (ac/dc) 4.7 6.3
12.6 V
Published in approved 6AQ5A target entry; Section1
Heater Current 0.6 0.45
225 mA
Published in approved 6AQ5A target entry; Section1
Plate Voltage
275 V
Published in approved 6AQ5A target entry; Section1
Grid-No.2 (Screen-Grid) Voltage
275 V
Published in approved 6AQ5A target entry; Section1
Plate Dissipation
12 W
Published in approved 6AQ5A target entry; Section1
Grid-No.2 Input
2 W
Published in approved 6AQ5A target entry; Section1
Plate Voltage
250 V
Published in approved 6AQ5A target entry; Section1
Grid-No.l Voltage
-12.5 V
Published in approved 6AQ5A target entry; Section1
Plate Resistance (Approx.)
1970 Ω
Published in approved 6AQ5A target entry; Section1
Transeonductance ,
4800 µS
Published in approved 6AQ5A target entry; Section1
Plate Current
49.5 mA
Published in approved 6AQ5A target entry; Section1
Grid-No.l Voltage (Approx.) for plate current of
0.5 mA
Published in approved 6AQ5A target entry; Section1
Grid-No.l Voltage (Approx.) for plate current of 0.5 mA
-37 V
Published in approved 6AQ5A target entry; Section1
For fixed-bias operation
0.1 MΩ
Published in approved 6AQ5A target entry; Section1
For cathode-bias operation
0.5 MΩ
Published in approved 6AQ5A target entry; Section1
DC Plate Voltage
275 V
Published in approved 6AQ5A target entry; Section1
Peak Positive-Pulse Plate Voltage*
1100 V
Published in approved 6AQ5A target entry; Section1
Peak Negative-Pulse Grid-No.l (Control-Grid) Voltage
275 V
Published in approved 6AQ5A target entry; Section1
Peak Cathode Current
115 mA
Published in approved 6AQ5A target entry; Section1
Average Cathode Current
40 mA
Published in approved 6AQ5A target entry; Section1
Plate Dissipation
10 W
Published in approved 6AQ5A target entry; Section1
Grid-No.l-Circuit Resistance, for cathode-bias operation
2.2 MΩ
Published in approved 6AQ5A target entry; Section1
Capacitance
Grid No.l to Plate
0.4 pF
Published in approved 6AQ5A target entry; Section1
Grid No.l to Cathode, Heater, Grid No.2, and Grid No.3
8 pF
Published in approved 6AQ5A target entry; Section1
Plate to Cathode, Heater, Grid No.2, and Grid No
3 pF
Published in approved 6AQ5A target entry; Section1