# 203 series integrated circuits

> early Soviet series of hybrid DTL ICs

**Wikidata**: [Q119952872](https://www.wikidata.org/wiki/Q119952872)  
**Source**: https://4ort.xyz/entity/203-series-integrated-circuits

## Summary
The 203 series integrated circuits are an early Soviet series of hybrid integrated circuits utilizing diode–transistor logic (DTL). Developed in the Soviet Union with an inception date of 1960, these components represent some of the initial advancements in Soviet microelectronics. The series is manufactured by Angstrem and complies with the Soviet integrated circuit designation system.

## Key Facts
- **Classification:** The series is classified as a hybrid integrated circuit and utilizes diode–transistor logic (DTL).
- **Inception:** The technology dates back to 1960.
- **Manufacturer:** Produced by Angstrem.
- **Origin:** Country of origin is the Soviet Union.
- **Alternate Name:** Also known by the alias "2МД".
- **Compliance:** The series complies with the Soviet integrated circuit designation standard.
- **Structure:** As a hybrid integrated circuit, it combines different semiconductor devices and passive components on a substrate.

## FAQs
### Q: What type of technology is used in the 203 series integrated circuits?
A: The 203 series uses diode–transistor logic (DTL) and is built as a hybrid integrated circuit, meaning it combines semiconductor devices and passive components on a single substrate.

### Q: When were 203 series integrated circuits first introduced?
A: The series has an inception date of 1960, marking it as an early development in the history of integrated circuits.

### Q: Who is the manufacturer of the 203 series?
A: These integrated circuits are manufactured by the Soviet entity Angstrem.

## Why It Matters
The 203 series integrated circuits represent a significant milestone in the history of computing and electronics within the Soviet Union. Emerging in 1960, this series exemplifies the early adoption and indigenous development of miniaturized electronic technology during a period of rapid advancement in global electronics. As a hybrid integrated circuit utilizing diode–transistor logic (DTL), it bridged the gap between discrete component designs and the monolithic integrated circuits that would follow.

This series is crucial for understanding the evolution of Soviet electronic engineering standards. By complying with the Soviet integrated circuit designation, the 203 series helped standardize the implementation of logic gates and circuit miniaturization in Soviet hardware. The involvement of Angstrem, a noted manufacturer, highlights the industrial infrastructure established to support this technology. For historians and technologists, the 203 series serves as a primary example of the "2МД" era, showcasing the specific technical approaches—such as the combination of distinct semiconductor devices on a substrate—used to overcome the manufacturing challenges of the early 1960s.

## Notable For
- **Early Adoption:** Being an early Soviet series of hybrid DTL ICs established in 1960.
- **Hybrid Architecture:** Utilizing a hybrid structure that combines different semiconductor devices and passive components on a substrate, distinguishing it from monolithic designs.
- **Standardization:** Adhering to the Soviet integrated circuit designation system.
- **Manufacturer:** Being produced by Angstrem, a key player in Soviet electronics.

## Body
### Technical Classification
The 203 series is fundamentally defined as a **hybrid integrated circuit**. Unlike monolithic integrated circuits where all components are fabricated on a single piece of semiconductor material, a hybrid integrated circuit is a miniaturized electronic circuit combining different semiconductor devices (such as transistors) and passive components (such as resistors or capacitors) attached directly to a substrate.

The logic family employed in this series is **diode–transistor logic (DTL)**. This class of digital circuits uses transistors to perform logic operations and diodes for logic inputs, a standard technique in early integrated circuit development prior to the widespread adoption of Transistor-Transistor Logic (TTL).

### Historical Context and Origin
The series originated in the **Soviet Union** in **1960**. This timeframe places the 203 series among the earliest generations of integrated circuits developed globally. The series is also identified by the alias **2МД**, which serves as an alternative designation in technical documentation or historical records.

### Manufacturing and Standards
The primary manufacturer identified for this series is **Angstrem**. The development and production of the 203 series followed the **Soviet integrated circuit designation** system, ensuring compatibility and standardization across Soviet electronic systems.

*   **External Resources:** Further details regarding the series can be found in Russian-language documentation at `http://www.155la3.ru/k203.htm`.
*   **Media:** Visual references and related media are categorized under the "203 series integrated circuits" on Wikimedia Commons.