Raytheon CK722  
Written by Accutron on 2017-01-29  

The Raytheon CK722 germanium PNP transistor is a low performance bin of the CK718 shown above. The CK722 is regarded as the first low cost transistor available to consumers, and is the transistor used by Bulova engineer Max Hetzel during prototype development of the Accutron electronic timepiece.

Raytheon CK722, second package type. The initial package style consists of clear plastic with black paint.

CK722, underside construction.

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

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