Data set 01
1956 Western Electric Tubes
Published operating points and test conditions from this source.
SECTION 1
Pentode
Characteristic
HeaterOrFilamentVoltage
6.3 V
HeaterOrFilamentCurrent
175 mA
Voltage Pentode - Sharp Cutoff (single) ·Pentode
6AJ5
Sharp-cutoff miniature pentode voltage amplifier with low capacitance and high input impedance. Its electrical characteristics support fixed-gain high-frequency signal amplification with reduced circuit loading.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- 7BD
- Socket code
- B7G
- Base pins
- 7
- Nominal heater
- 6.3 V / 175 mA
Description
Sharp-cutoff miniature pentode voltage amplifier with low capacitance and high input impedance.
Socket description
Miniature 7-contact
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- 7BD
- Socket code
- B7G
- Base pins
- 7
- Nominal heater voltage
- 6.3 V
- Nominal heater current
- 175 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
7BD - Terminal pinout
Electrical assignments shared by every tube using this base designation.
| Terminal | Section | Connection | Evidence |
|---|---|---|---|
| PIN1G1 | A | G1 — Control Grid EIA transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 128, 7BD |
| PIN2G3 | A | G3 — Suppressor GridGroup 7BD2 EIA transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 128, 7BD |
| PIN2IS | A | IS — Internal ScreenGroup 7BD2 EIA transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 128, 7BD |
| PIN2K | A | K — CathodeGroup 7BD2 EIA transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 128, 7BD |
| PIN3H | — | H — Heater EIA transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 128, 7BD |
| PIN4H | — | H — Heater EIA transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 128, 7BD |
| PIN5P | A | P — Plate (Anode) EIA chart transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 128, 7BD |
| PIN6G2 | A | G2 — Screen Grid EIA chart transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 128, 7BD |
| PIN7G3 | A | G3 — Suppressor GridGroup 7BD7 EIA chart transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 128, 7BD |
| PIN7IS | A | IS — Internal ScreenGroup 7BD7 EIA chart transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 128, 7BD |
| PIN7K | A | K — CathodeGroup 7BD7 EIA chart transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 128, 7BD |
Section ratings
1 physical section, each with unique specifications.
Section 1
Pentode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 100000 Ω
- Transconductance
- 0.0025 S
- Max plate voltage
- 180 V
- Max screen voltage
- 180 V
- Max plate dissipation
- 2 W
- Max screen dissipation
- 0.5 W
- Max cathode current
- 18 mA
Published ratings and characteristics promoted from the approved source.
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
195X General Electric Essential Characteristics
Published operating points and test conditions from this source.
SECTION 1
Pentode
Capacitance
Input capacitance
4 pF
Published table value
Output capacitance
2.8 pF
Published table value
Grid-to-plate capacitance
0.02 pF
Published table value
Other
Plate voltage
28 V
ClassA
Screen-grid voltage
28 V
ClassA
Grid voltage
-1 V
ClassA
Plate current
2.7 mA
ClassA
Screen-grid current
1 mA
ClassA
Data set 03
195X Raytheon Special Purpose Tubes
Published operating points and test conditions from this source.
SECTION 1
Pentode
Other
Cathode resistor
200 Ω
RFAFAmplifier
Plate voltage
28 V
RFAFAmplifier
Screen voltage
28 V
RFAFAmplifier
Plate current
3 mA
RFAFAmplifier
Screen current
1.2 mA
RFAFAmplifier
Characteristic
Plate resistance
90000 Ω
Section1
Transconductance
2750 µS
Section1
Data set 04
1961 Tung Sol
Published operating points and test conditions from this source.
SECTION 1
Pentode
Other
Plate Voltage
28 V
ClassA
Data set 05
1966 Tung Sol Electronic Tubes 1 of 4
Published operating points and test conditions from this source.
SECTION 1
Pentode
Other
Screen voltage maximum
140 V
ElectrodeVoltage
Plate current
2.7 mA
ClassA
Screen current
1 mA
ClassA
Application
Sharp-cutoff pentode voltage amplifier
Section1
Characteristic
Plate resistance
0.1 MΩ
Section1
Transconductance
2500 µS
Section1
Data set 06
1969 Tesla Manual of Electronic Tubes
Published operating points and test conditions from this source.
SECTION 1
Pentode
Application
Application
RF_IF_Amplifier text