Artifact Details

Title

Vacuum tube type 7AK7

Catalog Number

102735190

Type

Physical object

Date

1938 ca.

Manufacturer

Sylvania

Place Manufactured

U. S.

Identifying Numbers

Model number 7AK7 Printed in brown ink on top of the glass envelope.
Other number AK1715 Written in green ink near the bottom of the glass envelope.

Dimensions

overall: 3 1/8 in x 1 1/4 in x 1 1/4 in

Description

This is a pentode vacuum tube with a loctal base. Pin 5 is missing by design. This is a spare tube for Bus Driver-Arithmetic Rack S/N 4.

Category

Component/vacuum tube

Credit

Gift of the Digital Equipment Corporation

Lot Number

X115.82