# 149 series integrated circuits

> a single model of bipolar transistor switch

**Wikidata**: [Q131721653](https://www.wikidata.org/wiki/Q131721653)  
**Source**: https://4ort.xyz/entity/149-series-integrated-circuits

## Summary
The **149 series integrated circuits** are a model series of bipolar transistor switches developed by **VSP Mikron** and manufactured at the **Voronezh Semiconductor Devices Plant**. This series includes specific models like the **1КТ491**, designed for switching applications in electronic circuits.

## Key Facts
- **Type**: A single model of bipolar transistor switch.
- **Developer & Manufacturer**: **VSP Mikron**, with production at the **Voronezh Semiconductor Devices Plant** (Воронежский завод полупроводниковых приборов).
- **Model Variant**: Includes the **1КТ491** as a specific instance within the series.
- **Classification**: Part of the broader **integrated circuit series** category, sharing a common part prefix.
- **Visual Reference**: An image of the **149КТ1В** model is available [here](https://commons.wikimedia.org/wiki/Special:FilePath/149КТ1В_Кремний.jpg).
- **Wikidata Presence**: Listed with a single sitelink (Commons) and categorized under **149 series integrated circuits**.

## FAQs

**What is the 149 series integrated circuit?**
The 149 series is a line of bipolar transistor switches, specifically designed for electronic switching applications. It includes models like the **1КТ491**, developed by **VSP Mikron**.

**Who manufactures the 149 series?**
The series is manufactured by **VSP Mikron** at the **Voronezh Semiconductor Devices Plant** in Russia.

**What are the key models in this series?**
The **1КТ491** is a notable model within the 149 series, functioning as a bipolar transistor switch.

**Where can I find images of the 149 series?**
An image of the **149КТ1В** model is available on Wikimedia Commons [here](https://commons.wikimedia.org/wiki/Special:FilePath/149КТ1В_Кремний.jpg).

## Why It Matters
The **149 series integrated circuits** play a role in electronic switching applications, providing reliable bipolar transistor solutions. Developed and manufactured in Russia, they contribute to domestic semiconductor production, particularly in industrial and specialized electronic systems. Their design as transistor switches makes them essential for circuits requiring efficient signal or power control.

## Notable For
- Being a **bipolar transistor switch** model series, optimized for switching applications.
- Manufactured by **VSP Mikron**, a key Russian semiconductor producer.
- Includes the **1КТ491** variant, a specific instance of the series.
- Part of Russia’s **integrated circuit series** ecosystem, sharing a common part prefix.

## Body

### **Overview & Classification**
The **149 series integrated circuits** are a specialized line of **bipolar transistor switches**, designed for electronic switching functions. They belong to the broader category of **integrated circuit series**, which are groups of ICs sharing a common part prefix. This series is particularly notable for its role in Russian semiconductor manufacturing.

### **Development & Manufacturing**
- **Developer**: **VSP Mikron**, a major Russian semiconductor company.
- **Manufacturer**: The **Voronezh Semiconductor Devices Plant** (Воронежский завод полупроводниковых приборов), a facility associated with VSP Mikron.
- **Model Variant**: The **1КТ491** is a confirmed instance within this series, functioning as a bipolar transistor switch.

### **Technical & Visual References**
- The series includes the **149КТ1В** model, with an available image on Wikimedia Commons [here](https://commons.wikimedia.org/wiki/Special:FilePath/149КТ1В_Кремний.jpg).
- The **Wikidata entry** for this series lists it under the **integrated circuit series** class, with a single sitelink (Commons).

### **Related Entities & Ecosystem**
- **Integrated Circuit Series (Class)**: The 149 series is part of a larger classification of ICs that share naming conventions and functional similarities.
- **VSP Mikron & Voronezh Plant**: The primary entities behind the development and production of this series, contributing to Russia’s semiconductor industry.

### **Documentation & External Links**
- **Commons Category**: [149 series integrated circuits](https://commons.wikimedia.org/wiki/Category:149_series_integrated_circuits)
- **Wikidata Description**: "a single model of bipolar transistor switch" — confirming its primary function.

This series remains a niche but important component in Russian electronics, particularly in applications requiring robust switching mechanisms.