# 261 series integrated circuits

> Soviet hybrid ICs for AM radio

**Wikidata**: [Q130468632](https://www.wikidata.org/wiki/Q130468632)  
**Source**: https://4ort.xyz/entity/261-series-integrated-circuits

## Summary
The 261 series integrated circuits were Soviet hybrid integrated circuits (ICs) designed for AM radio applications. Manufactured by Oktyabr in 1970, they combined different semiconductor devices and passive components on a substrate, following Soviet integrated circuit designation standards.

## Key Facts
- Part of the **hybrid integrated circuit** class, combining semiconductor devices and passive components on a substrate.
- Belongs to the **integrated circuit series** category, sharing the same part prefix (261).
- Manufactured by **Oktyabr** in the **Soviet Union**.
- Complies with **Soviet integrated circuit designation** standards.
- Introduced in **1970**.
- Designed specifically for **AM radio** applications.
- Part of the **261 series**, indicating a model series of ICs.
- Includes a **Wikimedia Commons image** (261ХА1_Октябрь_(2).jpg) for reference.
- Has a **Wikimedia Commons category** (261 series integrated circuits).

## FAQs
### Q: What type of integrated circuits were the 261 series?
A: The 261 series were **hybrid integrated circuits**, combining semiconductor devices and passive components on a substrate, designed for AM radio use.

### Q: Who manufactured the 261 series ICs?
A: The 261 series was manufactured by **Oktyabr** in the **Soviet Union**.

### Q: When were the 261 series ICs introduced?
A: The 261 series was introduced in **1970**.

### Q: What was the purpose of the 261 series ICs?
A: The 261 series was designed specifically for **AM radio** applications.

### Q: How are the 261 series ICs classified?
A: They belong to the **integrated circuit series** category and follow **Soviet integrated circuit designation** standards.

## Why It Matters
The 261 series integrated circuits represent an early example of Soviet hybrid ICs, combining semiconductor and passive components on a single substrate. These circuits were tailored for AM radio applications, reflecting the Soviet Union’s efforts to develop miniaturized electronic components during the 1970s. As part of the broader integrated circuit series, they contributed to the advancement of electronic miniaturization and functionality in communication devices. Their compliance with Soviet IC designation standards highlights the structured approach to semiconductor manufacturing in the era. While less documented than Western counterparts, the 261 series remains a notable entry in the history of Soviet electronics, showcasing the country’s contributions to integrated circuit technology.

## Notable For
- One of the first **Soviet hybrid ICs** designed for AM radio.
- Follows **Soviet integrated circuit designation** standards.
- Manufactured by **Oktyabr**, a key Soviet electronics producer.
- Part of the **261 series**, indicating a model series of ICs.
- Includes a **Wikimedia Commons image** for reference.
- Has a **dedicated Wikimedia Commons category** for further documentation.

## Body
### Classification
The 261 series belongs to the **hybrid integrated circuit** class, combining semiconductor devices and passive components on a substrate. It is also part of the **integrated circuit series**, sharing the same part prefix (261).

### Manufacturing and Designation
- **Manufacturer**: Oktyabr (Soviet Union)
- **Country**: Soviet Union
- **Compliance**: Soviet integrated circuit designation standards
- **Point in time**: 1970

### Application
The 261 series was specifically designed for **AM radio** applications, reflecting its role in early Soviet electronic communication systems.

### Documentation and References
- **Image**: Available on Wikimedia Commons (261ХА1_Октябрь_(2).jpg)
- **Commons category**: 261 series integrated circuits
- **Wikipedia languages**: Available in Wikimedia Commons

### Series and Standards
The 261 series is part of a broader **integrated circuit series**, indicating a model series of ICs sharing the same part prefix. It adheres to **Soviet integrated circuit designation** standards, highlighting structured semiconductor manufacturing practices in the era.