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7687
Sharp-Cutoff Pentode-Medium-Mu Triode

EIA Base & Outline

EIA Base: 9AEEIA Bulb: 6-2
Source ........................................ Sylvania - 1959

Application

Miniature type used in high-quality, high-fidelity audio equipment, particularly in phase splitters, tone-control amplifiers, and high-gain voltage amplifiers.

Requires miniature 9-contact socket. In direct-coupled voltage-amplifier phase-splitter circuits, the pentode unit should drive the triode unit. This is a low noise version of 7199.

Mechanical Data

Bulb .......................................... T-6 1/2
Base Type ..................................... Miniature Button 9-Pin
EIA Outline ................................... 6-3
EIA Base ...................................... 9AE
Cathode ....................................... Coated Unipotential
Mounting Position ............................. Any

Electrical Data

Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.45 A

For other characteristics and typical operation, see 7199

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Sat, 25 Jun 2022 10:38:59 -0700