# 413 series integrated circuits

> hybrid digital ICs for Nairi-4 computer

**Wikidata**: [Q130491499](https://www.wikidata.org/wiki/Q130491499)  
**Source**: https://4ort.xyz/entity/413-series-integrated-circuits

## Summary
413 series integrated circuits are a Soviet-era series of hybrid digital integrated circuits developed for use in the Nairi-4 computer. They are hybrid integrated circuits (miniaturized circuits combining different semiconductor devices and passive components on a substrate) introduced in 1978 and produced for industrial manufacturing.

## Key Facts
- The 413 series are hybrid digital integrated circuits used in the Nairi-4 computer.  
- Inception: 1978 (reference: http://www.155la3.ru/k413.htm).  
- Country of origin: Soviet Union.  
- Instance of: integrated circuit series.  
- Subclass of: hybrid integrated circuit (miniaturized circuit combining different semiconductor devices and passive components on a substrate).  
- Complies with: Soviet integrated circuit designation.  
- Used by: Nairi (computer series).  
- Quantity produced/allocated for industrial manufacturing: 20,000 units (applies_to_part: industrial manufacturing).  
- Image available: https://commons.wikimedia.org/wiki/Special:FilePath/413ХЛ1_(1).jpg.  
- Commons category: 413 series integrated circuits; sitelink_count: 1.

## FAQs
### Q: What were the 413 series integrated circuits used for?
A: They were hybrid digital ICs used in the Nairi-4 computer. Their design aimed to provide miniaturized combinations of semiconductor devices and passive components on a substrate for that system.

### Q: When and where were the 413 series introduced?
A: The 413 series were introduced in 1978 in the Soviet Union (reference: http://www.155la3.ru/k413.htm).

### Q: How many 413 series units were produced or allocated for industrial manufacturing?
A: A quantity of 20,000 units is recorded with the qualifier that it applies to industrial manufacturing.

## Why It Matters
The 413 series represents a specific implementation of hybrid integrated-circuit technology within Soviet computer engineering. As hybrid ICs, they embody the approach of combining multiple semiconductor devices and passive components on a single substrate to reduce size and improve component density—an important design strategy for computer systems of the era. Their documented use in the Nairi-4 computer ties them directly to a concrete computing platform, illustrating how Soviet electronics employed series-designated IC families to populate and standardize system builds. The recorded production quantity of 20,000 units for industrial manufacturing indicates these parts were produced at scale for practical deployment rather than being purely experimental. Compliance with the Soviet integrated circuit designation shows they were part of the formal component classification system used in that country. Together, these facts make the 413 series a useful data point for understanding component-level design and procurement in Soviet computing history.

## Notable For
- Being the hybrid digital IC series specified for the Nairi-4 computer.  
- Introduction in 1978 within the Soviet Union (documented reference).  
- A recorded industrial manufacturing allocation of 20,000 units.  
- Compliance with the Soviet integrated circuit designation system.  
- Classification as an integrated circuit series sharing a common part-prefix model structure.

## Body
### Overview
- 413 series integrated circuits are a series-level family of electronic components.  
- They are classified as hybrid digital integrated circuits.  
- The series is associated with the Nairi-4 computer platform.  
- Country of origin is the Soviet Union.

### Technical classification
- Instance of: integrated circuit series.  
- Subclass of: hybrid integrated circuit.  
- Parent-class definition: hybrid integrated circuit — a miniaturized electronic circuit combining different semiconductor devices and passive components on a substrate.

### Timeline and production
- Inception year: 1978 (reference: http://www.155la3.ru/k413.htm).  
- Quantity linked to industrial manufacturing: 20,000 units.

### Usage and deployment
- The series was used by the Nairi computer family (specifically referenced with Nairi-4).  
- The production quantity indicates deployment at industrial scale rather than only prototype or laboratory use.

### Standards and identification
- The 413 series complies with the Soviet integrated circuit designation.  
- The series is organized as an integrated circuit series, meaning multiple parts share a common part prefix.

### Documentation and media
- An image of a 413-series device is available at: https://commons.wikimedia.org/wiki/Special:FilePath/413ХЛ1_(1).jpg.  
- Commons category: 413 series integrated circuits.  
- sitelink_count recorded as 1.

## References

1. [Source](http://www.155la3.ru/k413.htm)