6S7

Triple-grid super-control remote-cutoff pentode designed for variable-gain RF/IF Class-A amplification and broad automatic-gain-control range.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: IO
Base pins: 7
Nominal heater: 6.3 V / 150 mA

Description

E@Rirgiogham RCA-657 1 TRIPLE-GRID SUPER-CONTROL AMPLIF IER (TENTATIVE DATA) HEATER VOLTAGE (A.C. or 0.C.) 6.3 volts HEATER CURRENT 0 0.18 Ampere DIRECT INTERELECTRODE CAPACITANCES: Grid to Plate 0.005 max., uuf Input 6.5 Hpf Output 10.5 ppf MAXIMUM OVERALL LENGTH 3-1/8" MAXIMUM DIAMETER 1-5/16" CAP Skirted Miniature - Style B 8ASE Smal) wafer Octal 7-Pin Amplifier - Class A OPERATING CONDITIONS and CHARACTERISTICS: Heater Voltage 6.3 6.3 volits Plate voltage 135 250 max, volts Screen volitage 67.5 100 max, volts Grid voltage (Minimum) -3 -3 volts Suppressor connected to cathode at socket Plate current 3.1 8.5 Miltliamperes Screen Current 0.9 2.0 Milliamperes Amplification Factor (Approx.) - 1750 Plate Resistance (Approx, - 1.0 Megohm Transconductance 1250 1750 Micromhos Grid voltage for transconduct- ance 10 micromhos -25 «=38,.5 Volts With shell connected to cathode, In circuits where the cathode is not directly connected to the heater, the potential difference between heater and cat

Socket description

International Octal

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: IO
Base pins: 7
Nominal heater voltage: 6.3 V
Nominal heater current: 150 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: 1000000 Ω
Transconductance: 0.00125 S
Max plate dissipation: 2.25 W

Source-derived section; promoted values populated 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 01

1940 RCA

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

HEATER VOLTAGE (A.C. or 0.C.)
6.3 V
HEATER VOLTAGE (A.C. or 0.C.) 6.3 volts
HEATER CURRENT 0
180 mA
HEATER CURRENT 0 0.18 Ampere
Grid to Plate 0.005 max., uuf
0.005 pF
Grid to Plate 0.005 max., uuf
Heater Voltage 6.3
6.3 V
Heater Voltage 6.3 6.3 volits
Plate voltage 135 250 max, volts
250 V
Plate voltage 135 250 max, volts
Screen volitage 67.5 100 max, volts
100 V
Screen volitage 67.5 100 max, volts
Grid voltage (Minimum) -3
-3 V
Grid voltage (Minimum) -3 -3 volts
Plate current 3.1
8.5 A
Plate current 3.1 8.5 Miltliamperes
Screen Current 0.9
2 mA
Screen Current 0.9 2.0 Milliamperes
Amplification Factor (Approx.)
1750
Amplification Factor (Approx.) - 1750
ance 10 micromhos -25 «=38,
5 V
ance 10 micromhos -25 «=38,.5 Volts
E+ 6.3 VOLTS SUPPRESSOR VOLTS o
6.3 V
E+ 6.3 VOLTS SUPPRESSOR VOLTS o
SCREEN VOLTS =
100 V
SCREEN VOLTS =100
Grid to plate (gl to p) max, . . e s s s e o o
5 pF
Grid to plate (gl to p) max, . . e s s s e o o 0,005 puf
Heater voltage, ., , . « + . . s o ¢ o s s o
6.3 V
Heater voltage, ., , . « + . . s o ¢ o s s o 6.3 volts
Maximum plate voltage., . . . . e o o o o o o
300 V
Maximum plate voltage., . . . . e o o o o o o 300 volts
Maximum grid #2 voltage, . . . o o o o.o o o See J
2 V
Maximum grid #2 voltage, . . . o o o o.o o o See J5"'cl"
Maximum grid #2 supply voltage e o ¢ o o o o
300 V
Maximum grid #2 supply voltage e o ¢ o o o o 300 volts
Maximum positive dc grid #1 voltage. e @ o o o o o ° volta
1 V
Maximum positive dc grid #1 voltage. e @ o o o o o ° volta
Maximm grid #2 dissipation, . . . . e s s s s - o 0,
25 W
Maximm grid #2 dissipation, . . . . e s s s s - o 0,25 watt
Heater voltege, . . « o o ¢ ¢ o & . . 6.3
6.3 V
Heater voltege, . . « o o ¢ ¢ o & . . 6.3 6.3 volts
Heater current ., . . 150
150 mA
Heater current ., . . 150 150 ma
Plate voltage. , « o 135
250 V
Plate voltage. , « o 135 250 volts
Grid #2 voltage, . o 675
100 V
Grid #2 voltage, . o 675 100 volts
Grid #1 voltage, o =3 =
3 V
Grid #1 voltage, o =3 =3 volts
Grid #3 voltege, nnected to pin 8 at socket
8 V
Grid #3 voltege, nnected to pin 8 at socket
Plate current, , ., ., . , o o 3.7
8.5 mA
Plate current, , ., ., . , o o 3.7 8.5 ma
Grid #1 voltege (approx.) for Gm 1 .« .« =25 «
38 V
Grid #1 voltege (approx.) for Gm 1 .« .« =25 «38 volte

Characteristic

Plate Resistance (Approx,
1 ohm
Plate Resistance (Approx, - 1.0 Megohm
Transconductance 1250
1750 µS
Transconductance 1250 1750 Micromhos
Plate resistance (approx. e o 1.0
1 ohm
Plate resistance (approx. e o 1.0 1.0 megohm

Data set 02

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

Heater voltage
6.3 V
Heater current
150 mA
Plate voltage
300 V
Typical operating conditions
Plate current
3.78.5 mA
Typical operating conditions