6ST7

Double-diode triode combining radio detector and AVC rectification with subsequent voltage amplification. The paired diodes handle signal and control-voltage functions while the triode provides receiver audio or voltage gain.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 3
Base: 8O
Socket code: IO
Base pins: 8
Nominal heater: 6.3 V / 150 mA

Description

6ST7 DUPLEX~DIODE TRIODE Single-Ended Metal Type (TENTATIVE DATA) Ratings are to be interpreted according to RNA Standard N¥8-210 (Jan. 8, 1940 Rev. 11-40) HEATER VOLTAGE (A.C. or D.C.) 6.3 Volts HEATER CURRENT 0.15 Ampere DIRECT INTERELECTRODE CAPACITA-NCES Triode Unit (Approx }: Grid to Plate [ ] 1.5 put ap 6rid to Cathode [cg(h+k+she11)] 2.8 ppt Plate to Cathode [Fp(h+k+she11ﬂ 3.0 puf MAXIMUM OVERALL LENGTH 2-5/8" MAX IMUM SEATED HEIGHT 2-1/1 6 MAXIMUM D!AMETER 1-5/ BULSB Metal he11 MT-8 BASE Small Wafer Octal MOUNTING 8—-Pin POSITION Any © with shell connected to cathode. Triode Unit PLATE VOLTAGE PLATE DISSIPATION 250 max. Volts 2.5 max. Watts CHARACTERISTICS - Class 4; 4dnplifier: Plate Voltage 250 Grid Voltage Volts -9 Volts Amplificatlion Factor 16 Plate Resistance 8500 Transconductance Ohms 1900 Micromhos Plate Current 9.5 Milliamperes Diode Units - Two The two diode plates are placed at one end of a cathode, the sleeve of which is common to the triode unit. Diode biasing of t

Socket description

International Octal

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: 8O
Socket code: IO
Base pins: 8
Nominal heater voltage: 6.3 V
Nominal heater current: 150 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

8O - Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

3 physical sections, each with unique specifications.

Section 1

Diode

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Representative of two identical diode sections.

Section 2

Triode

X-ray radiationInterelectrode capacitances

Plate resistance: 8500 Ω
Transconductance: 0.0019 S
Amplification factor: 16
Max plate voltage: 250 V

Medium-mu triode section.

Section 3

Diode

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Physical diode section added during approved section-structure reconciliation.

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

195X General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 2

Triode

Capacitance

Input capacitance
2.8 pF
Output capacitance
3 pF
Grid-plate capacitance
1.5 pF

Other

Plate voltage
250 V
ClassA
Grid voltage
-9 V
ClassA
Plate current
9.5 mA
ClassA

Characteristics

Plate resistance
8500 ohm
ClassA
Transconductance
1900 uS
ClassA
Amplification factor
16
ClassA