Artifact Details

Title

2N68 Germanium power transistors

Catalog Number

102757298

Type

Physical Object

Date

Circa 1954

Manufacturer

Sylvania

Place Manufactured

US

Identifying Numbers

Model number 2N68

Dimensions

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

Description

The object consists of three germanium power transistors, two of which have stamped numbers on the screw mounting side: 24 and 34.

Per Jack Ward, Transistor Museum - "germanium PNP alloy junction power transistors. Mid-1950s. The Sylvania 2N68 and 2N95 were among the industry’s first commercially available germanium power transistors. These were made with an integral finned heatsink to allow increased power output. Sylvania supplied both PNP (2N68) and NPN (2N95) transistors with similar characteristics, and this allowed substantial flexibility in circuit design, especially for audio circuits that did not require expensive or bulky transformers. The characteristics and suggested circuits for these transistors is well documented in the 1955 Sylvania booklet “ 28 Uses for Junction Transistors”. The Sylvania type 2N101 (supplied without a finned heatsink) is electrically equivalent to the 2N68. The 1955 Lafayette catalogue lists these transistors for $6.50 each.
Common – Sylvania was a major supplier of germanium power transistor technology throughout the 1950s and 1960s. Devices such as the 2N68 saw widespread use in many applications and were manufactured in substantial quantities. "

Category

Component/Semiconductor/transistor

Credit

Gift of Pat Belotti

Lot Number

X7957.2017