NJ7P SQL Tube Database Query

A horizontal ribbon.

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A horizontal ribbon.

6SR7
Twin Diode - Medium-Mu Triode

EIA Base & Outline

EIA Base: 8QEIA Bulb: 8-1

Substitute Data

Preferred Substitutes ......................... 6ST7
Substitutes ................................... 6SZ7
Source ........................................ RCA RC-15 - 1947

Application

Source ........................................ RCA RC-15 - 1947
Metal type used as combined detector, amplifier and avc tube in radio receivers. It is equivalent in performance to type 6BF6. Requires octal socket and may be mounted in any position.

Mechanical Data

Source ........................................ RCA RC-15 - 1947
Bulb .......................................... MT-8
EIA Outline ................................... 8-1
EIA Base ...................................... 8Q
Cathode ....................................... Coated Unipotential
Mounting Position ............................. Any

Electrical Data

Source ........................................ RCA RC-15 - 1947
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.3 A
Maximum Heater-Cathode Voltage
Heater Positive with Respect to Cathode
DC Component ............................ 90 V
Heater Negative with Respect to Cathode
DC Component ............................ 90 V

Direct Interelectrode Capacitances (approx)

Triode
Source ........................................ RCA RC-15 - 1947
Input ......................................... 3.6 pf
Output ........................................ 2.8 pf
Grid to Plate ................................. 2.4 pf

Maximum Ratings (Design Center Values)

Triode
Source ........................................ RCA RC-15 - 1947
Plate Voltage ................................. 300 V
Plate Dissipation ............................. 2.5 W

Characteristics and Typical Operation

Class A Amplifier
Source ........................................ RCA RC-15 - 1947
Plate Voltage ................................. 250 V
Grid No. 1 Voltage ............................ -9 V
Amplification Factor .......................... 16
Plate Resistance (approx) ..................... 8.5K Ω
Transconductance .............................. 1900 µMho
Plate Current ................................. 9.5 mA
Driving Power ................................. 10K W

A horizontal ribbon.

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A horizontal ribbon.

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Tue, 09 Aug 2022 07:41:29 -0700