Western Electric 1 Type & 41 Type Series  
Written by Accutron on 2017-02-10  

Devices included in this entry:

Western Electric 1C TTL J-K flip-flop (16-pin ceramic flat pack; pictured in thumbnail)
Western Electric 1L RTL dual D-type flip-flop (16-pin ceramic flat pack)
Western Electric 41ER (16-pin ceramic and plastic DIP)
Western Electric 618 (16-pin ceramic and plastic DIP)
Western Electric Monolithic IC Key Tag


Western Electric manufactured several families of monolithic RTL, DTL and TTL devices packaged in both inline ceramic flatpacks (1 Type) and DIPs (41 Type). Many devices were available in both 1 Type and 41 Type packages. The 1C is a TTL J-K flip-flop, while the 1L is a RTL dual D-type flip-flop. The function of the 41ER is unknown, but is believed to be a TTL device. The 618 is currently unidentified.


Western Electric 1C 5.0V TTL J-K flip-flop in original tray.


Western Electric 1L RTL dual D-type flip-flop in original tray.


Western Electric 1C (left) and 1L circuit diagrams.


Western Electric 41ER integrated circuit. Early Western Electric DIPs are built on a thin ceramic substrate like the 1C and 1L pictured above, and are then inversely mounted on a plastic DIP framework.


Western Electric 618, a device of unknown function.


Earlier Western Electric monolithic ICs were housed in a metal canister. This promotional key tag includes a partially assembled IC package and a second loose die suspended in clear acrylic.


Western Electric monolithic IC key tag, die shown under magnification. This early SSI device integrates four transistors, four diodes and 12 resistors.

This article is part of the [Digital Integrated Circuits] exhibit.

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