M Series Connectors
Are lightweight triplestart ratchet coupling type connectors designed for avionics, aerospace, Harsh Environment Connectors, security, motorsport and heavy duty applications.
The Meaning of DIN
The term DIN connector refers to a class of electrical connectors that adhere to the standards set by the Deutsches Institut für Normung (DIN), which translates to the German Institute for Standardization. Founded in 1917, DIN is the German national standards body that establishes precise requirements for the design, dimensions, materials, and performance of electronic components. By conforming to these standards, DIN connectors ensure high quality, safety, and interoperability across different manufacturers and systems globally.
Essential Features of DIN Connectors
DIN connectors belong to a family of multi-pin electrical components highly regarded for their standardization and reliability. The standard system allows for component interchangeability, simplified manufacturing, and reduced inventory costs. Depending on the type, these connectors are engineered for a wide range of functions, including high-density signal transmission, power supply, and data communication in harsh industrial settings. They are typically designed for robust, secure connections, whether they are board-to-board, board-to-wire, or cable-attached.
A Deep Dive into Major DIN Connector Types
Rectangular Board-to-Board Connectors (DIN 41612)
The DIN 41612 connector is one of the most recognized and widely used DIN connector types, particularly within computer and telecommunications equipment, though it has been largely superseded by international standards like IEC 60603-2. It features a rectangular interface with multiple rows of pins arranged on a standard 2.54 mm (0.1 in) pitch. Its primary application is for high-density board-to-board connections in backplane systems. Variants, such as the XC7 series, support advanced features like hot-swapping (connecting the power line first and disconnecting it last) with high insertion durability.
Circular and Mini DIN Connectors (Circular & Mini DIN)
These represent the classic image of a DIN connector.
- Circular DIN (DIN 41524): Features a circular shape, typically with 3 to 8 pins arranged in a circular pattern, and a protective metal shielding skirt. Historically, it was crucial for PC keyboards and is still used today for analog audio equipment and MIDI instruments.
- Mini-DIN: A smaller variant (9mm outside diameter) commonly referred to as the PS/2 connector. It is used for computer peripherals (mouse and keyboard) and S-video connections, functioning as a predecessor to the USB connector.
Industrial Valve Connectors (DIN 43650)
The DIN 43650 connector is essential in industrial automation, specifically designed to connect the solenoid operators of pneumatic and hydraulic valves, as well as pressure transducers, proximity switches, and level sensors. These connectors are robust, often featuring an external-nut design that provides superior cable retention and sealing, achieving high environmental protection ratings such as IP65 or IP67 against dust, oil, and humidity.
Spotlight: The DIN A Connector (Form A)
The term DIN A connector is a common industry designation for the Form A version of the DIN 43650 industrial valve connector standard. This specific form is characterized by its large 18 mm pin spacing and specific thread types for cable entry, such as PG 9, PG 11, or M16 threads. It is the most common form for solenoid valves and is also known by the international standard name EN 175301-803. Understanding the DIN A connector specification is crucial for buyers and engineers working with industrial fluid power systems.
Diverse Applications of DIN Connectors
Industrial Automation and Machinery
DIN connectors are vital for modern industrial systems. High-current versions like the XC4 (up to 40 A) and the high-density DIN 41612 variants are used in rack systems for demanding applications such as:
- Machine tools
- Semiconductor production equipment
- Industrial robots
- Quick chargers and power conditioners
The DIN 43650 and the DIN A connector are the industry standard for reliable signal and power connection to actuators and sensors in hydraulics and pneumatics.
Data Communication and Computing
Historically, DIN connectors defined the early days of personal computing.
- PS/2 (Mini-DIN): The industry standard for connecting keyboards and mice to computers.
- DIN 41612: Essential for interconnecting boards within telecommunication switches and mainframe computer backplanes, enabling high-speed, high-density data transfer.
Audio, Video, and Power
The original application of the DIN connector was heavily rooted in media:
- Analog Audio: Widely used in Europe for linking equipment like stereo tape recorders and amplifiers, utilizing specific pin configurations (e.g., 5-pin DIN) for signal transmission.
- Video: The 4-pin Mini-DIN is the proper name for the S-Video connector.
- Power: Specific DIN connectors, including certain loudspeaker types and 8-pin variants, have been adapted for low-voltage power connections and analogue theatrical lighting control.
Frequently Asked Questions (FAQ)
Are DIN Connectors still used today?
Yes, absolutely. While some original applications (like PC keyboards) have shifted to USB, DIN connectors are still extensively used. They are critical in industrial automation (DIN 43650 / DIN A connector), high-reliability backplane systems (DIN 41612), specialized audio (MIDI), and low-voltage power applications globally.
What is the difference between Circular DIN and Mini-DIN?
Both are based on the DIN standard and are circular. The Circular DIN is the larger, full-sized version (13.1mm outside diameter) used for audio and older PC applications. The Mini-DIN is a smaller variant (9mm outside diameter), primarily associated with S-Video and the PS/2 computer interface.
What is the DIN A connector on a Solenoid Valve?
The DIN A connector is the commonly referenced name for the Form A version of the DIN 43650 standard. It acts as the standard electrical interface for connecting a solenoid valve’s coil to a power source or controller, guaranteeing the valve achieves a specific IP rating (e.g., IP65) for industrial environments.
What is the pitch of a DIN 41612 connector?
The standard pitch (pin-to-pin distance) for DIN 41612 board-to-board connectors is 2.54 mm (or 0.1 inch), making them compatible with standard grid layouts for high-density connections.