Sprague 2N128  
Written by Accutron on 2017-01-29  

Philco introduced the germanium PNP surface barrier transistor (SBT) in late 1953. SBTs gained rapid popularity due to their high frequency performance, and established Philco as a key early transistor manufacturer. The 2N128 is an early commercial SBT, introduced by Philco and later replicated first by Sprague and then other manufacturers.


Sprague 2N128 germanium PNP surface barrier transistor.

This article is part of the [Discrete Semiconductors] exhibit.

©2000-2018 The Vintage Technology Association. All rights reserved.