# 807 series integrated circuits

> hybrid circuits for avionics

**Wikidata**: [Q131838826](https://www.wikidata.org/wiki/Q131838826)  
**Source**: https://4ort.xyz/entity/807-series-integrated-circuits

## Summary
The 807 series integrated circuits are a class of hybrid integrated circuits developed in the Soviet Union for avionics applications. Manufactured by Avangard around 1970, these circuits combine distinct semiconductor devices and passive components on a single substrate, adhering to the Soviet integrated circuit designation standard.

## Key Facts
- **Classification:** Instance of an integrated circuit model; subclass of hybrid integrated circuit.
- **Primary Application:** Utilized specifically for avionics.
- **Manufacturer:** Produced by Avangard.
- **Origin:** Soviet Union.
- **Date:** Point in time is 1970.
- **Technology:** Hybrid integrated circuit (HIC), defined as a miniaturized electronic circuit combining different semiconductor devices and passive components on a substrate.
- **Standard:** Complies with the Soviet integrated circuit designation.
- **Related Components:** Associated with the component family 8УС071.

## FAQs
### Q: What distinguishes the 807 series from other integrated circuits?
A: The 807 series is a hybrid integrated circuit, meaning it assembles separate semiconductor devices and passive components onto a substrate rather than fabricating them on a single silicon die like a monolithic integrated circuit.

### Q: Who manufactured the 807 series and when?
A: The 807 series was manufactured by Avangard in the Soviet Union, with activity recorded around the year 1970.

### Q: What is the primary use case for the 807 series?
A: These integrated circuits are designed specifically for avionics, serving as a specialized electronic component within aviation technology.

### Q: How does the 807 series fit into the broader history of electronics?
A: It represents a specialized application of hybrid integrated circuit technology (HIC), which served as a critical bridge between discrete circuits and monolithic integration, particularly in the Soviet electronics industry during the 1970s.

## Why It Matters
The 807 series integrated circuits represent a critical evolution in electronics packaging for specialized fields. By utilizing hybrid integrated circuit (HIC) technology, the 807 series offered a versatile solution where monolithic integration was impractical for the rigorous demands of avionics. This technology allowed for the combination of different component types on a single substrate, enabling higher density and performance than discrete circuits while maintaining flexibility in component selection.

Historically, the 807 series is a prime example of the extensive development and standardization within the Soviet electronics industry. It illustrates how specific numbered series were developed for distinct, high-stakes functions—such as aviation—paralleling other series developed for radio communications, logic control, and audio engineering during the same era.

## Notable For
- **Specialized Utility:** Unlike general-purpose logic or audio chips, the 807 series is notable for its specific application in avionics.
- **Manufacturing Provenance:** Distinctively manufactured by Avangard, a noted entity in Soviet electronics production.
- **Technological Composition:** Exemplifies the "microassembly" (микросборка) technique, combining passive and active components on an insulating foundation rather than a single chip.
- **Historical Context:** Part of the early 1970s wave of Soviet hybrid circuit standardization, existing alongside other specialized series like the 211 (logic) and 273 (radio) series.

## Body

### Definition and Structure
The 807 series integrated circuits are a specific model of hybrid integrated circuit (HIC). An HIC is a miniaturized electronic circuit constructed on a substrate that combines distinct semiconductor devices and passive components into a single package. Unlike monolithic integrated circuits, which are fabricated on a single chip of semiconductor material, the 807 series integrates pre-made components onto an insulating foundation. The physical structure relies on three main elements: the substrate, passive electronic components, and active semiconductor devices.

### Manufacturer and Origin
The 807 series was manufactured by **Avangard** in the **Soviet Union**. The production and development of this series are documented around the year **1970**. The existence of the series is verified through specific components such as the **8УС071** hybrid IC. These circuits comply with the **Soviet integrated circuit designation** system.

### Historical Development and Series Context
The 807 series is part of a broader landscape of hybrid integrated circuits that saw extensive development in the Soviet Union. This technology served as a bridge between discrete circuits and monolithic integration. The Soviet electronics industry produced a wide array of numbered series for distinct functions during this period. The 807 series (Avionics) existed alongside other specialized series, including:

- **Logic and Control:** The 211 series (Hybrid RTL and DCTL circuits, inception 1969) and the 210 series (Soviet RTL hybrid circuits).
- **Radio and Communications:** The 273 series (Portable transceivers, inception 1970), the 448 series, and the 826 series.
- **Analog and Audio:** The 298 series (Active audio frequency filters) and the STK series (Audio power amplifiers).
- **Voltage and Power:** The 442 series (Voltage regulator circuits) and the 295 series (Thyristor optocoupler ICs).

### Technical Ecosystem
The 807 series falls under the classification of **joining technology**. A closely related class within this domain is the **multi-chip module** (MCM), a discrete electronic assembly containing multiple integrated circuits that behaves as a single unit. The technology is also referred to by specific technical terms in different regions, such as **Dickschichttechnik** (Thick-film technology) in German and **микросборка** (microassembly) in Russian.