NJ7P SQL Tube Database Query

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A horizontal ribbon.

6FW8
Medium-Mu Twin Triode

EIA Base & Outline

EIA Base: 9AJEIA Bulb: 6-2

Substitute Data

Preferred Substitutes ......................... 6BC8 6JK8
Substitutes ................................... 6BK7 6AW8 6BZ7
Source ........................................ RCA RC-27 - 1973

Application

Source ........................................ RCA RC-27 - 1973
Miniature type used as a cascode amplifier in vhf color and black-and-white television tuners and in push-pull cathode-drive rf amplifiers. Requires miniature 9-contact socket.

Mechanical Data

Source ........................................ RCA RC-27 - 1973
Bulb .......................................... T-6 1/2
EIA Outline ................................... 6-2
EIA Base ...................................... 9AJ

Electrical Data

Source ........................................ RCA RC-27 - 1973
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.4 A

Direct Interelectrode Capacitances (approx)

Each Triode
Source ........................................ RCA RC-27 - 1973
Input ......................................... 3.4 pf
Output ........................................ 2.4 pf
Grid to Plate ................................. 1.9 pf

Maximum Ratings (Design Center Values)

Each Triode
Source ........................................ RCA RC-27 - 1973
Plate Voltage ................................. 250 V
Plate Dissipation ............................. 2.2 W

Characteristics and Typical Operation

Class A Amplifier
Source ........................................ RCA RC-27 - 1973
Plate Voltage ................................. 100 V
Grid No. 1 Voltage ............................ -1.2 V
Amplification Factor .......................... 33
Plate Resistance (approx) ..................... 2500 Ω
Transconductance .............................. 13K µMho
Plate Current ................................. 15 mA

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A horizontal ribbon.

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Thu, 30 Jun 2022 04:11:52 -0700