# hybrid integrated circuit

> miniaturized electronic circuit combining different semiconductor devices and passive components on a substrate

**Wikidata**: [Q1210109](https://www.wikidata.org/wiki/Q1210109)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Hybrid_integrated_circuit)  
**Source**: https://4ort.xyz/entity/hybrid-integrated-circuit

## Summary
A hybrid integrated circuit (HIC) is a miniaturized electronic circuit constructed on a substrate that combines distinct semiconductor devices and passive components into a single package. Unlike monolithic integrated circuits, which are fabricated on a single chip of semiconductor material, HICs integrate pre-made components onto an insulating foundation. This technology serves as a bridge between discrete circuits and monolithic integration, widely utilized in applications ranging from audio amplifiers to specialized radio communications.

## Key Facts
- **Definition:** A miniaturized electronic circuit that combines different semiconductor devices and passive components on a substrate.
- **Classification:** Subclass of integrated circuit; instance of joining technology.
- **Core Components:** Composed of a substrate, passive electronic components, and semiconductor devices.
- **Aliases:** Also known as Hybridschaltkreis, Dickschichtschaltkreis (Thick-film circuit), and микросборка (microassembly).
- **Multi-chip Modules:** A related class is the multi-chip module (MCM), a discrete electronic assembly containing multiple integrated circuits that behaves as a single unit.
- **Historical Data:** Specific series of hybrid circuits date back to at least 1969 (211 series) and 1970 (273 series).
- **Applications:** Used in audio power amplifiers (e.g., STK080), radio communications, logic circuits, and voltage regulation.

## FAQs
### Q: What distinguishes a hybrid integrated circuit from a standard integrated circuit?
A: While a standard (monolithic) integrated circuit is fabricated on a single piece of semiconductor material, a hybrid integrated circuit assembles separate semiconductor devices and passive components onto a substrate, effectively combining different technologies into one package.

### Q: What are the primary components of a hybrid integrated circuit?
A: Every hybrid integrated circuit consists of a substrate (the base material), passive electronic components (such as resistors and capacitors), and semiconductor devices (such as transistors and diodes).

### Q: What are common examples or types of hybrid integrated circuits?
A: Common examples include audio power amplifiers (like the STK series), multi-chip modules, and specialized series used for logic, radio communications, and voltage regulation, particularly in historical Soviet electronics.

## Why It Matters
Hybrid integrated circuits represent a critical evolution in electronics packaging, offering a versatile solution where monolithic integration is impractical or insufficient. By allowing the combination of different component types on a single substrate, HICs enable higher density and performance than discrete circuits while maintaining flexibility in component selection.

This technology played a significant role in the miniaturization of complex electronics, particularly in specialized fields like radio communications and audio engineering. For example, the provided data highlights the extensive development of hybrid series (such as the 200 and 400 series) for tasks ranging from logic control to portable transceivers. The ability to create "thick-film" circuits (Dickschichttechnik) allowed for robust, compact modules that could handle specific electrical requirements, bridging the gap between the limitations of early monolithic chips and the demands of advanced electronic systems.

## Notable For
- **Structural Composition:** Uniquely combines passive components and semiconductor devices on a substrate rather than etching them into a single silicon die.
- **Soviet Electronics Proliferation:** Extensively documented through numerous specific series (e.g., 207, 298, 448) developed in the Soviet Union for applications ranging from consumer electronics to military-grade radio communications.
- **Audio Engineering:** Known for specific applications in audio power amplification, evidenced by the STK080 and STK2125 series.
- **Specialized Functionality:** Utilized for niche technical applications such as thyristor optocoupling (295 series), audio frequency filtering (298 series), and microwave amplification (272 series).

## Body

### Definition and Structure
A hybrid integrated circuit is defined as a miniaturized electronic circuit formed by attaching different semiconductor devices and passive components to a substrate. This method of construction is classified as a "joining technology" and is distinct from the fabrication of monolithic integrated circuits. The physical structure relies on three main elements: the substrate, passive electronic components, and active semiconductor devices.

### Historical Development and Series
The technology saw extensive development and standardization, particularly within the Soviet electronics industry, which produced a wide array of numbered series for distinct functions. Key historical timelines and series include:

- **Logic and Control:**
  - **211 Series:** Hybrid RTL and DCTL circuits inception occurred in 1969.
  - **210 Series:** Developed as Soviet RTL hybrid circuits.
  - **KME3:** A family of hybrid diode-transistor logic ICs manufactured in the German Democratic Republic (DDR).

- **Radio and Communications:**
  - **273 Series:** Soviet hybrid ICs for portable transceivers, inception in 1970.
  - **448 Series & 826 Series:** Designed specifically for radio communications.

- **Analog and Audio:**
  - **298 Series:** Active audio frequency filters.
  - **STK Series:** Includes the STK080 and STK2125, utilized as audio power amplifier integrated circuits.

- **Resistor Arrays:**
  - Series 302, 308, 311, 312, and 313 were developed as resistor arrays or thin-film arrays for measurement instruments. The 311 series, for instance, dates back to 1979.

- **Voltage and Power:**
  - **442 Series:** Rare Soviet voltage regulator circuits.
  - **295 Series:** Hybrid thyristor optocoupler ICs.

### Related Technologies
The **multi-chip module** (MCM) is a closely related class within this domain. An MCM is a discrete electronic assembly that contains multiple integrated circuits packaged to behave as a single unit. Furthermore, the hybrid integrated circuit is also referred to by specific technical terms in different regions, such as **Dickschichttechnik** (Thick-film technology) in German and **микросборка** (microassembly) in Russian.

## References

1. [Source](https://github.com/JohnMarkOckerbloom/ftl/blob/master/data/wikimap)
2. Freebase Data Dumps. 2013
3. National Library of Israel