NJ7P SQL Tube Database Query

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6J5
Medium-Mu Triode

EIA Base & Outline

EIA Base: 6QEIA Bulb: 8-1

Substitute Data

Preferred Substitutes ......................... 6C5
Substitutes ................................... 6AE5 6L5
Source ........................................ RCA RC-15 - 1947

Application

Source ........................................ RCA RC-15 - 1947
Metal type used a detectors, amplifiers, or oscillators in radio equipment. This type features high transconductance together with comparatively high amplification factor. Requires octal socket and may be mounted in any position.

Mechanical Data

Source ........................................ RCA RC-15 - 1947
Bulb .......................................... MT-8
Base Type ..................................... Small Wafer Octal 6-Pin
EIA Outline ................................... 8-3
EIA Base ...................................... 6Q
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 ......................................... 3.4 pf
Output ........................................ 3.6 pf
Grid to Plate ................................. 3.4 pf

Maximum Ratings (Design Center Values)

Triode
Source ........................................ RCA RC-15 - 1947
Plate Voltage ................................. 300 V
Positive Grid No. 1 Voltage ................... 0 V
Plate Dissipation ............................. 2.5 W
Cathode Current ............................... 20 mA
Grid No. 1 Circuit Resistance
Self Bias .................................. 1M Ω

Characteristics and Typical Operation

Class A Amplifier
Source ........................................ RCA RC-15 - 1947
Plate Voltage ................................. 250 V
Grid No. 1 Voltage ............................ -8 V
Amplification Factor .......................... 20
Plate Resistance (approx) ..................... 7.7K Ω
Transconductance .............................. 2600 µMho
Plate Current ................................. 9 mA

Class A Amplifier
Source ........................................ RCA RC-15 - 1947
Plate Voltage ................................. 90 V
Grid No. 1 Voltage ............................ 0 V
Amplification Factor .......................... 20
Plate Resistance (approx) ..................... 6.7K Ω
Transconductance .............................. 3000 µMho
Plate Current ................................. 10 mA

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Fri, 05 Jun 2020 23:42:32 -0700