NJ7P SQL Tube Database Query

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6EF4
Beam Triode

EIA Base & Outline

EIA Base: 12HCEIA Bulb: 12-90

Substitute Data

Preferred Substitutes ......................... 6EJ4
Source ........................................ GE - 1973

Application

Source ........................................ GE - 1973
Duodecar type used as a shunt regulator in the high-voltage power supply of color television receivers. Requires duodecar 12-contact socket. Thus type is electrically identically with 6EJ4A.

Mechanical Data

Source ........................................ GE - 1973
Bulb .......................................... T-12
EIA Outline ................................... 12-90
EIA Base ...................................... 12HC

Electrical Data

Source ........................................ GE - 1973
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.2 A

Direct Interelectrode Capacitances (approx)

Triode
Source ........................................ GE - 1973
Input ......................................... 2.0 pf
Output ........................................ 0.8 pf
Grid to Plate ................................. 0.03 pf

Maximum Ratings (Design Center Values)

Triode
Source ........................................ GE - 1973
Plate Voltage ................................. 27000 V
Plate Dissipation ............................. 40 W

Characteristics and Typical Operation

Shunt TV HV Regulator
Source ........................................ GE - 1973
Plate Voltage ................................. -1.6 V
Plate Current ................................. 1.6 mA

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Wed, 08 Dec 2021 12:02:23 -0700