NJ7P SQL Tube Database Query

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16A8
High-Mu Triode - Power Pentode

EIA Base & Outline

Application

Miniature type used in tv receiver applications. The triode is used as a vertical oscillator or as an af amplifier, and the pentode is used as a vertical output tube or as an audio output tube. Requires miniature 9-contact socket.

Mechanical Data

EIA Outline ................................... 6-4
EIA Base ...................................... 9EX

Electrical Data

Heater Voltage ................................ 16 V
Heater Current ................................ 0.3 A

Maximum Ratings (Design Center Values)

Pentode
Plate Voltage ................................. 550 V
Grid No. 2 Voltage ............................ 250 V
Plate Dissipation ............................. 7 W
Grid No. 2 Dissipation ........................ 1.8 W

Triode
Plate Voltage ................................. 550 V

Characteristics and Typical Operation

Triode Class A Amplifier
Plate Voltage ................................. 100 V
Grid No. 1 Voltage ............................ 0 V
Amplification Factor .......................... 70
Transconductance .............................. 2500 µ
Plate Current ................................. 3.5 mA

Pentode Class A Amplifier
Plate Voltage ................................. 100 V
Grid No. 2 Voltage ............................ 100 V
Grid No. 1 Voltage ............................ -6 V
Plate Resistance (approx) ..................... 15K Ω
Transconductance .............................. 6800 µ
Plate Current ................................. 26 mA
Grid No. 2 Current ............................ 5 mA

Pentode Class A Amplifier
Plate Voltage ................................. 170 V
Grid No. 2 Voltage ............................ 170 V
Grid No. 1 Voltage ............................ -11.5 V
Plate Resistance (approx) ..................... 16K Ω
Transconductance .............................. 7500 µ
Plate Current ................................. 41 mA
Grid No. 2 Current ............................ 8 mA

Pentode Class A Amplifier
Plate Voltage ................................. 200 V
Grid No. 2 Voltage ............................ 200 V
Grid No. 1 Voltage ............................ -12.5 V
Plate Resistance (approx) ..................... 20.5K Ω
Transconductance .............................. 6800 µ
Plate Current ................................. 35 mA
Grid No. 2 Current ............................ 6.5 mA

Pentode Class A Amplifier
Plate Voltage ................................. 200 V
Grid No. 2 Voltage ............................ 200 V
Grid No. 1 Voltage ............................ -16 V
Plate Resistance (approx) ..................... 20K Ω
Transconductance .............................. 6400 µ
Plate Current ................................. 35 mA
Grid No. 2 Current ............................ 7 mA

If you are uncertain about the EIA designator for a particular tube please use the "Index" button to list all the tubes in the database. You can click on the designator for the closest tube.

(c) 1994-2021 by William A. Beech, NJ7P

Wed, 29 Mar 2023 00:50:30 -0700