TRANSISTOR MUSEUM  

Historic Transistor Photo Gallery   

 

 

Transistor Size (1/2” OD X 3/4” L)

No Date Code

2N68 has Identical Case

 

Top View Showing Transistor Case and Surrounding Finned Heatsink

 

 

SYLVANIA 2N68 and 2N95

 

TYPE

Germanium PNP (2N68) and

NPN (2N95) Alloy Junction

Medium Power Transistors

 

USAGE

Hobbyist/Experimenter

Early Audio Applications 

 

DATE INTRODUCED

1955

 

CASE STYLES

Silver Metal Case with

Black Metal Finned Heatsink

 

AVAILABILITY

Common (High Volume Production)

 

HISTORIC NOTES

The Sylvania 2N68 and 2N95 were some of the first germanium power transistors available commercially, beginning in 1955.  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 equivalent to the 2N68, and the 2N102 is equivalent to the 2N95.  The 1955 Lafayette catalogue lists these transistors available for $6.50 each.

 

 

Copyright © 2002 by Jack Ward

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