NJ7P SQL Tube Database Query

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17EW8
High-Mu Twin Triode

EIA Base & Outline

EIA Base: 9AJEIA Bulb: 6-2

Substitute Data

Substitutes ................................... 17JK8
Source ........................................ RCA RC-29 - 1975

Application

Miniature type used in rf-amplifier and oscillator-mixer circuits in AM/FM radio receivers. Requires miniature 9-contact socket.

Mechanical Data

EIA Outline ................................... 6-2
EIA Base ...................................... 9AJ

Electrical Data

Heater Voltage ................................ 17.5 V
Heater Current ................................ 0.15 A

Direct Interelectrode Capacitances (approx)

Each Triode
Input ......................................... 3 pf
Output ........................................ 1.2 pf
Grid to Plate ................................. 1.5 pf

Maximum Ratings (Design Center Values)

Each Triode
Plate Voltage ................................. 250 V
Plate Dissipation ............................. 2.5 W

Characteristics and Typical Operation

Class A Amplifier
Plate Voltage ................................. 100 V
Grid No. 1 Voltage ............................ -1.1 V
Amplification Factor .......................... 50
Transconductance .............................. 4600 µMho
Plate Current ................................. 4.5 mA

Class A Amplifier
Plate Voltage ................................. 170 V
Grid No. 1 Voltage ............................ -1.5 V
Amplification Factor .......................... 50
Transconductance .............................. 6200 µMho
Plate Current ................................. 10 mA

Class A Amplifier
Plate Voltage ................................. 200 V
Grid No. 1 Voltage ............................ -2.1 V
Amplification Factor .......................... 48
Transconductance .............................. 5800 µMho
Plate Current ................................. 10 mA

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Wed, 08 Dec 2021 21:25:03 -0700