Data set 01
1953 Amperex
Published operating points and test conditions from this source.
SECTION 1
Pentode
Other
Plate voltage cut-off condition
550 V
Screen voltage cut-off condition
550 V
Characteristic
Input resistance at 40 Mc/s
10000 ohm
Voltage Pentode - Sharp Cutoff (single) ·Pentode
3EJ7
Sharp-cutoff high-transconductance pentode for fixed-gain IF amplification in color and monochrome television receivers.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- E9-1
- Socket code
- B9A
- Base pins
- 9
- Nominal heater
- 3.15 V / 600 mA
Description
Sharp-cutoff pentode used as a high-transconductance IF amplifier in color and black-and-white television receivers.
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
- E9-1
- Socket code
- B9A
- Base pins
- 9
- Nominal heater voltage
- 3.15 V
- Nominal heater current
- 600 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
E9-1 - Terminal pinout
Electrical assignments shared by every tube using this base designation.
No verified pinout is recorded for this base designation.
Section ratings
1 physical section, each with unique specifications.
Section 1
Pentode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 350000 Ω
- Transconductance
- 0.015 S
- Amplification factor
- 60
- Max plate voltage
- 250 V
- Max screen voltage
- 250 V
- Max plate dissipation
- 2.5 W
- Max screen dissipation
- 0.9 W
- Max cathode current
- 25 mA
- Rectifier max heater-cathode voltage
- 150 V
Promoted from published ratings/characteristics where directly applicable; additional published values retained in TUBE_SECTION_PARAMETER.
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
1961 Tung Sol
Published operating points and test conditions from this source.
SECTION 1
Pentode
Capacitance
INPUT: G1 TO (Htk+G2+a3+1.5.)
10 PF
Published datasheet value
oUTPUT: P TO (Htktg2ta3ti.s.)
3 PF
Published datasheet value
Other
PLATE VOLTAGE WITH Ib = O MA
550 VOLTS
Published datasheet value
PLATE VOLTAGE
250 VOLTS
Published datasheet value
CATHODE CURRENT
25 MA
Published datasheet value
Data set 03
1963 Amperex Condensed
Published operating points and test conditions from this source.
SECTION 1
Pentode
Other
Plate voltage
200 V
IFAmplifier
Screen voltage
200 V
IFAmplifier
Control-grid voltage
-2.5 V
IFAmplifier
Plate current
10 mA
IFAmplifier
Screen current
4.1 mA
IFAmplifier
Characteristic
Plate resistance
350000 Ω
Section1
Transconductance
15000 µS
Section1
Data set 04
1966 Tung Sol Electronic Tubes 1 of 4
Published operating points and test conditions from this source.
SECTION 1
Pentode
Other
Zero-current plate voltage maximum
550 V
Section1
Zero-current screen voltage maximum
550 V
Section1
Plate voltage
200 V
IFAmplifier
Screen voltage
200 V
IFAmplifier
Grid-1 voltage
-2.5 V
IFAmplifier
Plate current
10 mA
IFAmplifier
Screen current
4.1 mA
IFAmplifier
Characteristic
Transconductance
15000 µS
Section1
Amplification factor
60
Section1
Plate resistance
0.35 MΩ
Section1
Grid-1 impedance at 40 MHz
30000 Ω
Section1
Heater warm-up time
11 s
Section1
Data set 05
1967 Mullard Receiving and Amplifying Valves
Published operating points and test conditions from this source.
SECTION 1
Pentode
Other
Ci n
10 pF
Published in approved EF184 target datasheet entry; Section1
Co ut
3 pF
Published in approved EF184 target datasheet entry; Section1
Cg l - g 2
2.8 pF
Published in approved EF184 target datasheet entry; Section1
P g2 max
900 mW
Published in approved EF184 target datasheet entry; Section1
T b u l b max
180 °C
Published in approved EF184 target datasheet entry; Section1
gm =2
2 mA
Published in approved EF184 target datasheet entry; Section1
Data set 06
1975 RCA RC30
Published operating points and test conditions from this source.
SECTION 1
Pentode
Other
Heater Voltage (ac/dc) 3.4 4.4
6.3 V
Published in approved XF184 target datasheet entry; Section1
Heater Current 0.6 0.45
300 mA
Published in approved XF184 target datasheet entry; Section1
Plate Supply Voltage B
50 V
Published in approved XF184 target datasheet entry; Section1
Plate Voltage
250 V
Published in approved XF184 target datasheet entry; Section1
Grid-No.2 (Screen-Grid) Supply Voltage
550 V
Published in approved XF184 target datasheet entry; Section1
Grid-No.2 Voltage
250 V
Published in approved XF184 target datasheet entry; Section1
Cathode Current
25 mA
Published in approved XF184 target datasheet entry; Section1
Plate Dissipation
2.5 W
Published in approved XF184 target datasheet entry; Section1
Grid-No.2 Input
0.9 W
Published in approved XF184 target datasheet entry; Section1
Plate Voltage 190
200 V
Published in approved XF184 target datasheet entry; Section1
Grid-No.2 Voltage 190
200 V
Published in approved XF184 target datasheet entry; Section1
Grid-No. 1 Voltage —2.35
-2.5 V
Published in approved XF184 target datasheet entry; Section1
Grid-No.l-Circuit Resistance
1 MΩ
Published in approved XF184 target datasheet entry; Section1
Capacitance
Internal Shield
10 pF
Published in approved XF184 target datasheet entry; Section1
Internal Shield
3 pF
Published in approved XF184 target datasheet entry; Section1
Characteristic
Plate Resistance (Approx.) 0.35
0.35 MΩ
Published in approved XF184 target datasheet entry; Section1
Transconductance 15000
15000 µS
Published in approved XF184 target datasheet entry; Section1
Plate Current 10
10 mA
Published in approved XF184 target datasheet entry; Section1
Grid-No.2 Current 4.1
-4.1 mA
Published in approved XF184 target datasheet entry; Section1