# 167 series integrated circuits

> MOS amplifier ICs

**Wikidata**: [Q131730649](https://www.wikidata.org/wiki/Q131730649)  
**Source**: https://4ort.xyz/entity/167-series-integrated-circuits

## Summary
The 167 series integrated circuits are a model series of MOS amplifier integrated circuits originating from the Soviet Union. Developed by NPO Krystall, these circuits utilize MOSFET technology and comply with standard Soviet integrated circuit designations.

## Key Facts
*   **Classification**: The series is an instance of an "integrated circuit series," defined as a model series of integrated circuits sharing the same part prefix.
*   **Function**: The primary function of the 167 series is MOS amplification.
*   **Technology**: The integrated circuits contain MOSFETs (Metal-Oxide-Semiconductor Field-Effect Transistors) as their core component.
*   **Developer**: The series was developed by NPO Krystall.
*   **Manufacturers**: Production was handled by NPO Krystall and SPP Kvazar.
*   **Origin**: The country of origin is the Soviet Union.
*   **Compliance**: The series complies with the Soviet integrated circuit designation system.
*   **Visual Documentation**: An example image of a component (specifically the К1УС671) is available via Wikimedia Commons.

## FAQs
**Who developed and manufactured the 167 series integrated circuits?**
The 167 series was developed by NPO Krystall. Manufacturing duties were shared between the developer, NPO Krystall, and SPP Kvazar.

**What type of technology is used in the 167 series?**
These integrated circuits utilize MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) technology to function as MOS amplifiers.

**What naming standard does the 167 series follow?**
The series complies with the Soviet integrated circuit designation, meaning it belongs to a model series of integrated circuits that share the same part prefix.

## Why It Matters
The 167 series integrated circuits represent a specific class of Soviet-era semiconductor technology focused on signal amplification. By utilizing MOSFET technology, these components were part of the broader standardization effort in the Soviet electronics industry, complying with strict designation systems to ensure interchangeability and reliability across different hardware systems. The involvement of major entities like NPO Krystall and SPP Kvazar highlights the industrial infrastructure dedicated to microelectronics development in the Soviet Union.

## Notable For
*   **MOS Amplification**: Distinguished specifically as a series of MOS amplifier ICs.
*   **Soviet Standardization**: Notable for strict compliance with the Soviet integrated circuit designation system.
*   **Specific Componentry**: Utilizes MOSFET architecture within its design.

## Body

### Technical Definition and Classification
The 167 series integrated circuits are technically classified as an "integrated circuit series." In the context of electronic component taxonomy, this is defined as a model series of integrated circuits that share the same part prefix. The series is specifically designed to function as MOS (Metal-Oxide-Semiconductor) amplifiers. The internal architecture relies on MOSFETs (has_part), which serve as the fundamental building blocks for the circuit's amplification capabilities.

### Provenance and Manufacturing
The development of the 167 series is credited to **NPO Krystall**, a significant entity in the Soviet electronics landscape. The manufacturing of the series was a collaborative industrial effort, produced by both **NPO Krystall** and **SPP Kvazar**. The series originates from the **Soviet Union** and serves as an example of the region's domestic semiconductor production capabilities.

### Design Standards and Identification
The 167 series adheres strictly to the **Soviet integrated circuit designation** system. This compliance ensures that the components are categorized correctly within the Soviet nomenclature, identified by their specific series number (167) and shared prefix. This system was essential for organizing the vast array of integrated circuits produced during the era.

### Media and Documentation
Visual records of the 167 series exist within the public domain, specifically categorized under the "167 series integrated circuits" on Wikimedia Commons. An example of the physical hardware, such as the K1US671 model ( Cyrillic: К1УС671), has been documented photographically, illustrating the physical packaging of these components.