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Voltage Pentode - Sharp Cutoff (single) ·Pentode

6JC6A

Improved frame-grid sharp-cutoff pentode for television IF amplification around 40 MHz with approximately 16 mA/V transconductance.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: B9A
Base pins: 9
Nominal heater: 6.3 V / 300 mA

Description

Sharp-cutoff frame-grid miniature pentode used in television IF-amplifier stages around 40 MHz.

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: 300 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

1 physical section, each with unique specifications.

Section 1

Pentode

X-ray radiationInterelectrode capacitances

Plate resistance: 180000 Ω
Transconductance: 0.016 S
Max plate voltage: 330 V
Max screen voltage: 330 V
Max plate dissipation: 3.1 W
Max screen dissipation: 0.7 W

Frame-grid sharp-cutoff IF pentode.

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 01

1971 RCA HB3 Binder 5 of 7

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

Heater Voltage (AC or DC) Eh
6.3 V
Published table value
Heater Current Ih
300 mA
Published table value
Grid No
1 pF
Published table value column 1
Grid No
0.019 pF
Published table value column 2
Input: G
8.5 K
Published table value
Output: P to IK, G
3 pF
Published table value
DC Plate Current Ib
14 mA
Published table value
DC Grid-No
2 mA
Published table value column 1
DC Grid-No
3.4 mA
Published table value column 2
Cutoff DC Grid-No. l Voltage Ecl(co)
-3 V
Published table value
DC Plate Supply Voltage Ebb
125 V
Published table value
DC Grid-No
2 V
Published table value column 1
DC Grid-No
125 V
Published table value column 2
Cathode Resistor ~k
56 k
Published table value
DC Plate Voltage Eb
330 V
Published table value
Voltage Ec
0 V
Published table value
Supply Voltage E c
330 V
Published table value
Neater Voltage (AC or DC) Eh
5.7 V
Published table value column 1
Neater Voltage (AC or DC) Eh
6.9 V
Published table value column 2
For Eck >
165 V
Published table value column 1
For Eck >
330 V
Published table value column 2
For Eck >
2 V
Published table value column 3
Plate Dissipation Pb
3 W
Published table value column 1
Plate Dissipation Pb
1 W
Published table value column 2
GRID-No
2 VOLTS
Published table value column 1
GRID-No
125 VOLTS
Published table value column 2
PLATE VOLTS•
123 VOLTS
Published table value
GRID—No
2 VOLTS
Published table value column 1
GRID—No
125 VOLTS
Published table value column 2

Characteristics

Transconductance gm
16000 µS
Published table value

Data set 02

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

Peak value
200 V
Other;PublishedValue1
Peak value
200 V
Other;PublishedValue2
Peak value
200 V
Other;PublishedValue3
Average value
100 V
Other;PublishedValue1
Average value
100 V
Other;PublishedValue2
Average value
100 V
Other;PublishedValue3
Plate Voltage
330 V
MaximumRating;PublishedValue1
Plate Voltage
330 V
MaximumRating;PublishedValue2
Grid-No.3 (Suppressor-Grid) Voltage, Positive value
0 V
MaximumRating;PublishedValue1
Grid-No.3 (Suppressor-Grid) Voltage, Positive value
0 V
MaximumRating;PublishedValue2
Grid-No.2 (Screen-Grid) Supply Voltage
330 V
MaximumRating;PublishedValue1
Grid-No.2 (Screen-Grid) Supply Voltage
330 V
MaximumRating;PublishedValue2
Grid-No.l (Control-Grid) Voltage, Positive-bias value
0 V
MaximumRating;PublishedValue1
Grid-No.l (Control-Grid) Voltage, Positive-bias value
0 V
MaximumRating;PublishedValue2
Plate Dissipation
2.5 W
MaximumRating;PublishedValue1
Plate Dissipation
3.1 W
MaximumRating;PublishedValue2
For grid-No.2 voltages up to 165 volts
0.6 V
MaximumRating;PublishedValue1
For grid-No.2 voltages up to 165 volts
0.7 V
MaximumRating;PublishedValue2
For fixed-bias operation
0.25 megohm
MaximumCircuitValue;PublishedValue1
For fixed-bias operation
0.25 megohm
MaximumCircuitValue;PublishedValue2
For cathode-bias operation
1 megohm
MaximumCircuitValue;PublishedValue1
For cathode-bias operation
1 megohm
MaximumCircuitValue;PublishedValue2
PLATE VOLTS
48 V
MaximumCircuitValue

Capacitance

Grid No.l to Plate
0.019 pF
Capacitance

Characteristic

Plate Supply Voltage
125 V
Characteristic;PublishedValue1
Plate Supply Voltage
125 V
Characteristic;PublishedValue2
Grid-No.2 Supply Voltage
125 V
Characteristic;PublishedValue1
Grid-No.2 Supply Voltage
125 V
Characteristic;PublishedValue2
Cathode-Bias Resistor
56 ohm
Characteristic;PublishedValue1
Cathode-Bias Resistor
56 ohm
Characteristic;PublishedValue2
Plate Resistance (Approx.)
0.18 megohm
Characteristic;PublishedValue1
Plate Resistance (Approx.)
0.18 megohm
Characteristic;PublishedValue2
Plate Current
13 mA
Characteristic;PublishedValue1
Plate Current
14 mA
Characteristic;PublishedValue2
Grid-No.2 Current
3.2 mA
Characteristic;PublishedValue1
Grid-No.2 Current
3.4 mA
Characteristic;PublishedValue2
100
-3 V
Characteristic;PublishedValue1
100
-3 V
Characteristic;PublishedValue2