Artifact Details

Title

Vacuum tube type 7AK7

Catalog Number

102735883

Type

Physical object

Date

1938 ca.

Manufacturer

Sylvania Electric Products, Inc.

Place Manufactured

US

Identifying Numbers

Model number 7Ak7 Printed in brown ink on top of the glass envelope.
Other number 16-BR-V2-1 Printed vertically in green ink on glass envelope.

Dimensions

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

Description

This is a pentode vacuum tube with a loctal base. Pin 5 is missing by design. The object was accompanied by an index card that had "NR3127 - Box 1 - #15; SYLVANIA; 5-7AK7" in letters printed with a red felt tip pen and "Small pentode used in Whirlwind and SAGE computers,"

Category

Component/vacuum tube