NJ7P SQL Tube Database Query

A horizontal ribbon.

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A horizontal ribbon.

10JA8
High-Mu Triode - Sharp-Cutoff Pentode

EIA Base & Outline

EIA Base: 9DXEIA Bulb: 6-3

Substitute Data

Preferred Substitutes ......................... 10HF8
Substitutes ................................... 10EB8 11JE8 10GN8
Source ........................................ RCA RC-29 - 1975

Application

Source ........................................ RCA RC-29 - 1975
Miniature type used in tv receiver applications. The triode is used as a sync separator, sync clipper and phase inverter; the pentode is used as a video amplifier. Requires miniature 9-contact socket.

Mechanical Data

Source ........................................ RCA RC-29 - 1975
EIA Outline ................................... 6-3
EIA Base ...................................... 9DX

Electrical Data

Source ........................................ RCA RC-29 - 1975
Heater Voltage ................................ 10.5 V
Heater Current ................................ 0.45 A

Direct Interelectrode Capacitances (approx)

Pentode
Source ........................................ RCA RC-29 - 1975
Input ......................................... 11 pf
Output ........................................ 4.4 pf
Grid to Plate ................................. 0.1 pf

Triode
Source ........................................ RCA RC-29 - 1975
Input ......................................... 2.6 pf
Output ........................................ 2.6 pf
Grid to Plate ................................. 4 pf

Maximum Ratings (Design Center Values)

Pentode
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 330 V
Grid No. 2 Voltage ............................ 330 V
Plate Dissipation ............................. 5 W
Grid No. 2 Dissipation ........................ 1.5 W

Triode
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 300 V
Plate Dissipation ............................. 1 W

Characteristics and Typical Operation

Triode Class A Amplifier
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 135 V
Grid No. 1 Voltage ............................ -2 V
Amplification Factor .......................... 60
Plate Resistance (approx) ..................... 39K Ω
Transconductance .............................. 1550 µMho
Plate Current ................................. 1 mA

Triode Class A Amplifier
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 200 V
Grid No. 1 Voltage ............................ -2 V
Amplification Factor .......................... 70
Plate Resistance (approx) ..................... 19K Ω
Transconductance .............................. 3700 µMho
Plate Current ................................. 3.5 mA

Pentode Class A Amplifier
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 135 V
Grid No. 2 Voltage ............................ 135 V
Grid No. 1 Voltage ............................ -1.5 V
Plate Resistance (approx) ..................... 66K Ω
Transconductance .............................. 12600 µMho
Plate Current ................................. 17 mA
Grid No. 2 Current ............................ 4.2 mA

Pentode Class A Amplifier
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 200 V
Grid No. 2 Voltage ............................ 135 V
Grid No. 1 Voltage ............................ -1.5 V
Plate Resistance (approx) ..................... 70K Ω
Transconductance .............................. 14000 µMho
Plate Current ................................. 18 mA
Grid No. 2 Current ............................ 4 mA

A horizontal ribbon.

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A horizontal ribbon.

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Sat, 25 Mar 2023 20:03:33 -0700