# 111 series integrated circuits

> early Soviet RTL integrated circuits

**Wikidata**: [Q130446181](https://www.wikidata.org/wiki/Q130446181)  
**Source**: https://4ort.xyz/entity/111-series-integrated-circuits

Here’s the structured knowledge entry for **111 series integrated circuits**:

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## Summary  
The **111 series integrated circuits** were early Soviet resistor-transistor logic (RTL) chips developed in the 1960s. They were created by Alfred Sarant, an American scientist who defected to the Soviet Union, and were part of the USSR's efforts to establish domestic semiconductor technology. These ICs followed the Soviet integrated circuit designation system and were foundational to early Soviet computing.  

## Key Facts  
- **Developer**: Alfred Sarant (also known as Ф. Г. Старос/Filipp Staros in the USSR).  
- **Inception**: 1960.  
- **Country of origin**: Soviet Union.  
- **Technology**: Resistor–transistor logic (RTL).  
- **Aliases**: Микроватт (Mikrovatt).  
- **Classification**: Subclass of integrated circuit series.  
- **Compliance**: Follows Soviet integrated circuit designation standards.  
- **Documentation**: Described in Russian at [155la3.ru](http://www.155la3.ru/k111.htm).  

## FAQs  
### Q: Who developed the 111 series integrated circuits?  
A: They were developed by Alfred Sarant, an American engineer and Soviet spy who worked under the name Filipp Staros in the USSR.  

### Q: What technology did the 111 series use?  
A: The series used resistor-transistor logic (RTL), an early form of digital circuit design.  

### Q: When were these ICs introduced?  
A: They were introduced in 1960 as part of the Soviet Union's push for domestic semiconductor production.  

## Why It Matters  
The 111 series integrated circuits were significant as one of the USSR's earliest attempts to compete with Western semiconductor technology during the Cold War. Developed by Alfred Sarant—a defector from the U.S.—these chips represented Soviet advancements in miniaturization and digital logic. While primitive by modern standards, they laid groundwork for later Soviet computing and military systems. Their existence also highlights the role of espionage and defectors in Cold War-era technological competition.  

## Notable For  
- **Early Soviet ICs**: Among the first integrated circuits produced in the USSR.  
- **Defector-led development**: Created by Alfred Sarant, a prominent American defector.  
- **RTL technology**: Used resistor-transistor logic, a precursor to more advanced logic families.  
- **Cold War significance**: Symbolized Soviet efforts to achieve semiconductor self-sufficiency.  

## Body  
### Development and Context  
- Developed in **1960** under the Soviet Union's push for indigenous semiconductor technology.  
- Led by **Alfred Sarant** (Ф. Г. Старос), who defected from the U.S. and contributed to Soviet electronics.  

### Technical Specifications  
- **Logic type**: Resistor-transistor logic (RTL).  
- **Designation**: Complied with Soviet integrated circuit naming conventions.  
- **Alias**: Referred to as **Микроватт** (Mikrovatt) in some contexts.  

### Legacy  
- Documented in Russian technical sources, including [155la3.ru](http://www.155la3.ru/k111.htm).  
- Part of the broader Cold War technological rivalry between the USSR and the West.  

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