NJ7P SQL Tube Database Query

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A horizontal ribbon.

6FH8
Medium-Mu Triode - Three-Plate Tetrode

EIA Base & Outline

EIA Base: 9KPEIA Bulb: 6-2
Source ........................................ RCA RC-29 - 1975

Application

Source ........................................ RCA RC-29 - 1975
Miniature type used in complex-wave generator applications and in television receiver applications. Sharp-cutoff tetrode unit has a pair of additional plates. Requires miniature 9-contact socket.

Mechanical Data

Source ........................................ RCA RC-29 - 1975
Bulb .......................................... T-6 1/2
EIA Outline ................................... 6-2
EIA Base ...................................... 9KP

Electrical Data

Source ........................................ RCA RC-29 - 1975
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.45 A

Direct Interelectrode Capacitances (approx)

Tetrode Plate 1A
Source ........................................ RCA RC-29 - 1975
Input ......................................... 4.5 pf
Output ........................................ 1.4 pf
Grid to Plate ................................. 0.06 pf

Tetrode Plate 1B
Source ........................................ RCA RC-29 - 1975
Input ......................................... 4.5 pf
Output ........................................ 1.4 pf

Tetrode Plate 2
Source ........................................ RCA RC-29 - 1975
Input ......................................... 4.5 pf
Output ........................................ 1.4 pf

Triode
Source ........................................ RCA RC-29 - 1975
Input ......................................... 2.6 pf
Output ........................................ 1 pf
Grid to Plate ................................. 1.4 pf

Maximum Ratings (Design Center Values)

Tetrode Plate 1A
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 200 V
Plate Dissipation ............................. 0.3 W

Tetrode Plate 1B
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 200 V
Plate Dissipation ............................. 0.3 W

Tetrode Plate 2
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 275 V
Plate Dissipation ............................. 2.3 W

Triode
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 275 V
Plate Dissipation ............................. 1.7 W

Characteristics and Typical Operation

Triode Class A Amplifier
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 100 V
Grid No. 1 Voltage ............................ -1 V
Amplification Factor .......................... 40
Plate Resistance (approx) ..................... 7400 Ω
Transconductance .............................. 5400 µMho
Plate Current ................................. 7.9 mA

Pentode Class A Amplifier
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 250 V
Grid No. 2 Voltage ............................ 250 V
Grid No. 1 Voltage ............................ -2 V
Plate Resistance (approx) ..................... 750K Ω
Transconductance .............................. 4400 µMho
Plate Current ................................. 7.3 mA
Grid No. 2 Current ............................ 1.4 mA

A horizontal ribbon.

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A horizontal ribbon.

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Sat, 04 Dec 2021 20:20:12 -0700