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6DJ8
Medium-Mu Twin Triode

Base & Bulb ( RCA RC-29 - 1975)

Substitute Data

Preferred Substitutes ......................... 6ES8 6FW8
Substitutes ................................... 6BK7

Application

Miniature type used as cascode amplifier in vhf color and black-and-white television tuners. Requires miniature 9-contact socket.

Mechanical Data

Bulb .......................................... T-6 1/2
Base .......................................... Miniature Button 9-Pin
Outline ....................................... 6-2
EIA Base ...................................... 9AJ
Cathode ....................................... Coated Unipotential
Mounting Position ............................. Any

Electrical Data

Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.365 A

Direct Interelectrode Capacitances (approx)

Each Triode
Input ......................................... 3.3 pf
Output ........................................ 1.8 pf
Grid to Plate ................................. 1.4 pf

Maximum Ratings (Design Center Values)

Each Triode
Plate Voltage ................................. 130 V
Plate Dissipation ............................. 1.8 W

Characteristics and Typical Operation

Class A Amplifier
Plate Voltage ................................. 90 V
Grid No. 1 Voltage ............................ -1.3 V
Amplification Factor .......................... 33
Transconductance .............................. 12.5K µ
Plate Current ................................. 15 mA

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