# 255 series integrated circuits

> hybrid integrated amplifier circuits for avionics

**Wikidata**: [Q130468100](https://www.wikidata.org/wiki/Q130468100)  
**Source**: https://4ort.xyz/entity/255-series-integrated-circuits

## Summary
The 255 series integrated circuits are hybrid integrated amplifier circuits developed in the Soviet Union specifically for avionics applications. They were manufactured by Oktyabr and represent an important model series in the Soviet integrated circuit designation system.

## Key Facts
- Country of origin: Soviet Union
- Year of development: 1970
- Manufacturer: Oktyabr
- Primary application: avionics systems
- Used in aircraft: Ilyushin Il-76
- Technical classification: hybrid integrated circuit
- Model series: integrated circuit series
- Designation standard: Soviet integrated circuit designation
- Reference documentation: available in Russian at http://www.155la3.ru/k255.htm

## FAQs
### Q: What are 255 series integrated circuits?
A: The 255 series integrated circuits are hybrid integrated amplifier circuits designed specifically for avionics applications. They represent a model series in the Soviet integrated circuit designation system.

### Q: When and where were the 255 series integrated circuits developed?
A: The 255 series integrated circuits were developed in 1970 in the Soviet Union. They were manufactured by Oktyabr as part of the Soviet integrated circuit designation system.

### Q: What were the 255 series integrated circuits used for?
A: The 255 series integrated circuits were used in avionics systems, specifically in aircraft like the Ilyushin Il-76. They functioned as hybrid integrated amplifier circuits in these applications.

### Q: How do 255 series integrated circuits differ from other integrated circuits?
A: The 255 series integrated circuits are distinguished by their hybrid technology, which combines different semiconductor devices and passive components on a substrate. They were specifically designed for the demanding environments of avionics systems.

## Why It Matters
The 255 series integrated circuits represent an important milestone in Soviet electronics development for aviation applications. Their hybrid integrated circuit technology allowed for miniaturization and improved reliability in avionics systems, which was crucial for military and civil aircraft like the Ilyushin Il-76. These circuits demonstrate the Soviet Union's capability to develop specialized electronic components for aerospace applications during the 1970s. The series follows the Soviet integrated circuit designation system, indicating it was part of a standardized approach to electronics development in the USSR. Understanding this series provides insight into the technological capabilities and industrial practices of Soviet electronics manufacturing during the Cold War era.

## Notable For
- Development of hybrid integrated amplifier circuits specifically for avionics applications
- Compliance with the Soviet integrated circuit designation system
- Use in critical military aircraft systems like the Ilyushin Il-76
- Manufacturing by Oktyabr, a significant Soviet electronics producer
- Technical implementation combining different semiconductor devices and passive components on a substrate

## Body

### Technical Classification
The 255 series integrated circuits are classified as hybrid integrated circuits, which are miniaturized electronic circuits combining different semiconductor devices and passive components on a substrate. They belong to the integrated circuit series model category, sharing the same part prefix as other related components. The series follows the Soviet integrated circuit designation standard, which was the established system for categorizing and identifying electronic components manufactured in the Soviet Union.

### Development History
Developed in 1970 in the Soviet Union, the 255 series integrated circuits represent an important technological achievement in Soviet electronics for aviation applications. The manufacturer, Oktyabr, produced these circuits as part of the country's effort to develop specialized electronic components for aerospace systems. The 255 series was specifically designed to meet the rigorous requirements of avionics applications, demonstrating the Soviet Union's capabilities in developing hybrid integrated technologies for military and civil aircraft.

### Applications and Usage
The primary application of the 255 series integrated circuits was in avionics systems, with documented use in the Ilyushin Il-76 aircraft. These circuits functioned as hybrid integrated amplifiers, providing crucial electronic functionality in aviation environments. The specialized design of these circuits ensured reliability and performance in the demanding conditions encountered during flight operations. The implementation of these circuits in Soviet aircraft highlights their importance in the country's aerospace technology during the 1970s.

### Manufacturer and Documentation
The 255 series integrated circuits were manufactured by Oktyabr, a significant producer of electronic components in the Soviet Union. Documentation for this series is available in Russian at the website http://www.155la3.ru/k255.htm, which provides technical information about the circuits. This documentation represents a valuable resource for understanding the specifications and applications of the 255 series in Soviet electronics manufacturing. The availability of such documentation underscores the systematic approach taken to record and disseminate information about electronic components in the Soviet Union.