# 403 series integrated circuits

> hybrid power integrated circuits

**Wikidata**: [Q130501610](https://www.wikidata.org/wiki/Q130501610)  
**Source**: https://4ort.xyz/entity/403-series-integrated-circuits

## Summary
The 403 series integrated circuits are hybrid power integrated circuits developed by the Soviet Union's Scientific Research Institute for Semiconductors in 1977. They are part of a broader class of hybrid integrated circuits, combining different semiconductor devices and passive components on a single substrate.

## Key Facts
- Developed by the Scientific Research Institute for Semiconductors in the Soviet Union
- First introduced in 1977
- Part of the broader class of hybrid integrated circuits
- Combines semiconductor devices and passive components on a single substrate
- Follows Soviet integrated circuit designation standards
- Includes models such as the 403ЕН5A (as seen in the provided image)
- Classified under the categories of hybrid integrated circuits, voltage regulators, and power amplifiers
- Documented on the Russian website 155la3.ru

## FAQs
### Q: What are the 403 series integrated circuits used for?
A: The 403 series integrated circuits are hybrid power integrated circuits, meaning they combine semiconductor devices and passive components on a single substrate. They are likely used in applications requiring voltage regulation or power amplification, given their classification.

### Q: Who developed the 403 series integrated circuits?
A: The 403 series integrated circuits were developed by the Scientific Research Institute for Semiconductors in the Soviet Union.

### Q: When were the 403 series integrated circuits first introduced?
A: The 403 series integrated circuits were first introduced in 1977.

### Q: What is the significance of the 403 series integrated circuits?
A: The 403 series integrated circuits represent an early example of hybrid integrated circuits in the Soviet Union, combining different semiconductor devices and passive components on a single substrate. They contribute to the broader field of integrated circuit technology during the Cold War era.

## Why It Matters
The 403 series integrated circuits are significant as part of the Soviet Union's early efforts in hybrid integrated circuit development. Hybrid integrated circuits, which combine different semiconductor devices and passive components on a single substrate, offer advantages in miniaturization and performance. The 403 series, developed in 1977, reflects the Soviet Union's contributions to integrated circuit technology during the Cold War. These circuits likely played a role in power-related applications, such as voltage regulation or amplification, given their classification. Their development and documentation on Russian websites highlight the Soviet Union's advancements in semiconductor technology, even if they remain less widely known compared to Western counterparts.

## Notable For
- Being one of the earliest hybrid integrated circuits developed in the Soviet Union
- Combining semiconductor devices and passive components on a single substrate
- Following Soviet integrated circuit designation standards
- Including specific models like the 403ЕН5A
- Documented on the Russian website 155la3.ru

## Body
### Development and Classification
The 403 series integrated circuits were developed by the Scientific Research Institute for Semiconductors in the Soviet Union, with their first introduction in 1977. They are classified as hybrid integrated circuits, which combine different semiconductor devices and passive components on a single substrate. This classification distinguishes them from purely digital or analog integrated circuits.

### Technical Specifications
The 403 series includes specific models, such as the 403ЕН5A, as documented in the provided image. These circuits are likely designed for power-related applications, given their classification under voltage regulators and power amplifiers.

### Historical Context
The 403 series integrated circuits were developed during the Cold War era, reflecting the Soviet Union's efforts in semiconductor technology. Their documentation on the Russian website 155la3.ru highlights their significance in the Soviet Union's integrated circuit development.

### Legacy and Impact
The 403 series integrated circuits contribute to the broader field of hybrid integrated circuits, which offer advantages in miniaturization and performance. While less widely known than Western counterparts, they represent an important part of the Soviet Union's semiconductor technology advancements.

## References

1. [Source](http://www.155la3.ru/k403.htm)