Philco 2N1158A  
Written by Accutron on 2017-02-09  

The Philco 2N1158A is a germanium PNP micro alloy diffused transistor (MADT), an improved type of surface barrier transistor capable of operating at frequencies in excess of 200MHz. The example shown here is a U.S. Army variant.


Philco 2N1158A germanium PNP MADT.


2N1158A transistor, underside construction.

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

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