Artifact Details

Title

Ingot

Catalog Number

102757103

Type

Physical Object

Date

circa 1962

Manufacturer

Knapic Electro-Physics

Place Manufactured

Palo Alto, CA

Identifying Numbers

Other number 52.5 Weight (unit unspecified) written in pen on label and on tag
Other number E3751 Ingot number written in pen on label and on tag

Dimensions

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

Description

This is a cylindrical chunk of boron doped silicon ingot. The endcaps have sealed with brown wax. The tag with it says it is P-type, with a 1-1-1 crystal orientation with resistivity of 5.5 at the top and 4.9 at the bottom. It was delivered to ITT Components Division.
There is a white paper label wrapped around the middle with initial KEP, a number, and the weight (units unspecified).

Credit

Gift of Dave Pansen

Lot Number

X7972.2017