# 2.155

> rare, poorly documented series of Soviet hybrid integrated circuits

**Wikidata**: [Q120681546](https://www.wikidata.org/wiki/Q120681546)  
**Source**: https://4ort.xyz/entity/2-155

## Summary
2.155 is a rare, poorly documented series of Soviet hybrid integrated circuits, part of the 2.xxx series. It was manufactured by the Kharkiv Schevchenko Plant and primarily used in avionics applications. Due to its limited documentation, little is known about its specifications or exact role in Soviet electronics.

## Key Facts
- **Instance of**: Integrated circuit series
- **Subclass of**: Hybrid integrated circuit
- **Manufacturer**: Kharkiv Schevchenko Plant
- **Country of origin**: Soviet Union
- **Use**: Avionics
- **Documentation status**: Rare and poorly documented
- **Commons category**: 2.155
- **Wikidata description**: Rare, poorly documented series of Soviet hybrid integrated circuits

## FAQs
### Q: What is the 2.155 series?
A: The 2.155 series is a poorly documented series of Soviet hybrid integrated circuits, part of the broader 2.xxx series. It was manufactured by the Kharkiv Schevchenko Plant and used in avionics.

### Q: Who manufactured the 2.155 series?
A: The 2.155 series was manufactured by the Kharkiv Schevchenko Plant, a Soviet electronics manufacturer.

### Q: What is the significance of the 2.155 series?
A: The 2.155 series is notable for being a rare and poorly documented series of Soviet hybrid integrated circuits, primarily used in avionics. Its limited documentation makes it difficult to assess its technical or historical impact.

### Q: What type of circuits is the 2.155 series?
A: The 2.155 series consists of hybrid integrated circuits, which combine different semiconductor devices and passive components on a single substrate.

### Q: Where can I find more information about the 2.155 series?
A: Due to its rarity and limited documentation, detailed information about the 2.155 series may be difficult to find. The Wikimedia Commons category "2.155" may contain relevant images, but further research may be required.

## Why It Matters
The 2.155 series is significant as part of the Soviet Union's early efforts in integrated circuit development, particularly in hybrid circuits. These circuits were crucial for avionics, enabling compact and efficient electronic systems for military and aerospace applications. However, the lack of documentation makes it difficult to assess their exact role or impact. The series represents a gap in historical records, highlighting the challenges of preserving knowledge from the Soviet electronics industry. Researchers and historians may find the 2.155 series of interest due to its rarity and the potential insights it could provide into Soviet microelectronics.

## Notable For
- **Rarity**: One of the least documented series of Soviet hybrid integrated circuits.
- **Avionics focus**: Primarily used in military and aerospace applications.
- **Hybrid design**: Combines semiconductor devices and passive components on a single substrate.
- **Manufactured by Kharkiv Schevchenko Plant**: Produced by a key Soviet electronics manufacturer.
- **Limited historical records**: Few details are available, making it a subject of interest for researchers.

## Body
### Classification
The 2.155 series is classified as an **integrated circuit series**, specifically a **hybrid integrated circuit**. This means it combines different semiconductor devices and passive components on a single substrate, allowing for miniaturized electronic circuits.

### Manufacturer
The series was produced by the **Kharkiv Schevchenko Plant**, a significant Soviet electronics manufacturer. The plant played a key role in the development and production of integrated circuits during the Soviet era.

### Use Case
The 2.155 series was primarily used in **avionics**, supporting military and aerospace applications. Its hybrid design made it suitable for compact and efficient electronic systems in these critical fields.

### Documentation Status
The 2.155 series is **rare and poorly documented**, with limited information available in historical records. This lack of documentation makes it difficult to assess its exact specifications, role, or impact.

### Historical Context
The 2.155 series is part of the broader **2.xxx series** of Soviet hybrid integrated circuits. It reflects the Soviet Union's efforts to develop advanced electronics during the Cold War, particularly for defense and aerospace applications.

### Wikimedia Commons
An image of the 2.155 series is available on **Wikimedia Commons**, providing a visual reference for researchers. The image may offer clues about its design or functionality, despite the lack of detailed documentation.