NJ7P SQL Tube Database Query

A horizontal ribbon.

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A horizontal ribbon.

6HL8
Medium-Mu Triode - Sharp-Cutoff Pentode

EIA Base & Outline

EIA Base: 9AEEIA Bulb: 6-2

Substitute Data

Preferred Substitutes ......................... 6EA8 6GH8
Substitutes ................................... 6BL8 6GJ8 6KD8 6LM8 6U8
Source ........................................ RCA RC-29 - 1975

Application

Source ........................................ RCA RC-29 - 1975
Miniature type used in color and bw tv receiver applications. The triode is used as a sync-separator or voltage-amplifier tube, and the pentode is used as a video if amplifier, agc-amplifier or reactance tube. Requires miniature 9-contact socket.

Mechanical Data

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

Electrical Data

Source ........................................ RCA RC-29 - 1975
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.6 A

Maximum Ratings (Design Center Values)

Pentode
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 330 V
Grid No. 2 Voltage ............................ 330 V
Plate Dissipation ............................. 2.5 W
Grid No. 2 Dissipation ........................ 0.55 W

Triode
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 330 V
Plate Dissipation ............................. 2.5 W

Characteristics and Typical Operation

Triode Class A Amplifier
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 125 V
Grid No. 1 Voltage ............................ -1 V
Amplification Factor .......................... 40
Plate Resistance (approx) ..................... 5000 Ω
Transconductance .............................. 7000 µMho
Plate Current ................................. 12.5 mA

Pentode Class A Amplifier
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 125 V
Grid No. 2 Voltage ............................ 125 V
Grid No. 1 Voltage ............................ -1 V
Plate Resistance (approx) ..................... 150K Ω
Transconductance .............................. 10000 µMho
Plate Current ................................. 12 mA
Grid No. 2 Current ............................ 4.5 mA

A horizontal ribbon.

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A horizontal ribbon.

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Tue, 28 Mar 2023 23:23:16 -0700