The technical basics of the connector
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Author:smartkonn
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Published time: 2018-07-02
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The technical basis of a connector
What is a connector? Why use connector connectors for classification molex products and global markets
1 What is a connector?
Connectors are a component that our electronic engineering technicians often come into contact with. Its role is very simple: to bridge the communication between the blocked or isolated circuits in the circuit, so that the current flows, so that the circuit achieves the intended function. Connectors are an indispensable part of an electronic device. You will always find one or more connectors along the path through which the current flows. The form and structure of the connector are ever-changing. There are various types of connectors depending on the application object, frequency, power, and application environment. For example, the connector for lighting on the court and the connector for the hard drive, as well as the connector for igniting the rocket, are quite different. But no matter what kind of connector, the current should be ensured to flow smoothly and continuously. In general terms, the connector is connected not only to the current, but in today's rapid development of optoelectronics | laser device technology, in the fiber system, the carrier that transmits the signal is light, glass and plastic replace the wires in the ordinary circuit. However, connectors are also used in the optical signal path, and they function the same as circuit connectors. Since we only care about circuit connectors, this course will be closely integrated with Molex products to focus on circuit connectors and their applications.
2 Why use a connector?
Imagine what would happen if there were no connectors? At this time, the circuits should be permanently connected together by continuous conductors. For example, the electronic device should be connected to the power supply voltage regulator. Both ends of the connecting wires must be connected to the electronic device and the power supply by some method (such as soldering). Fixed and secure. In this way, both production and use bring a lot of inconvenience. Take the car battery as an example. Assuming that the battery cable is fixedly soldered to the battery, the car manufacturer adds workload to the battery installation, increasing production time and cost. When the battery is damaged and needs to be replaced, the car must be sent to the repair station, the old one is removed by de-soldering, and the new one is welded. This requires more labor. With the connector you can get rid of a lot of trouble, buy a new battery from the store, disconnect the connector, remove the old battery, install a new battery, and reconnect the connector. This simple example illustrates the benefits of a connector. It makes design and production processes easier and more flexible, reducing production and maintenance costs.
Connector benefits
Improve production processes Connectors simplify the assembly process for electronic products. It also simplifies the mass production process;
Easy to repair If an electronic component fails, the failed component can be quickly replaced when the connector is installed;
Easy to upgrade As technology advances, components can be updated with connectors, and new and improved components can be used instead of the old design-enhancing flexibility. Connectors are used to enable engineers to design and integrate new products, as well as There is more flexibility when the components form the system.
3 Connector classification
The classification of connectors has been confusing for many years, and each manufacturer has its own classification methods and standards. In 1989, with the support of the National Association of Electronic Distributors (NEDA, the abbreviation of the National Electronic Distributors Association, which is an industrial education organization), several manufacturers of connectors were brought together to develop a connector classification standard. And terminology. Molex has participated in the development process. NEDA Standard This standard developed by NEDA is called the Levels of Packaging. The summary is now described in the following table:
Level description
0 IC chip or chip to package connector Please note that the first level is "0", not "1". This level does not actually involve a connection. Level 0 is the integrated circuit chip. Molex does not manufacture IC chips. But the production of the chip is connected to the socket of the circuit board.
1 IC component or component to (circuit) board connector When the IC chip is installed in the socket of the board, it is a level 1 connection.
2 (printed) board (pcb) to (printed) board connector The 2-stage connector is used to connect the printed circuit boards. .
3 Wire to board or sub-assembled to sub-combined connector The 3-level connector connects the printed circuit board and sub-combination, or connects two sub-combinations. Sub-combination is an integral part of electronic products. According to Molex's custom, Level 3 also includes some wires to the wire connectors.
4 Chassis to chassis or I/O connector 4-level connectors provide power or signal connections. The general rule of thumb is to use a 4-level connector when the connection involves audio or video signals, or when connecting to a network or computer.
Regarding the above connector level, you need to pay attention to the following points:
■ Some connectors can be used for more than one level. For example, the 3-level connector QF50 and MX50 can be used for level 2 or level 4. Also known as the 4-stage Molex input/output plugs and sockets, it can also be used for wire-to-board or board-to-board connections.
■ In actual work, the connector is rarely discussed at the above level, but it is discussed in terms of the appearance and connection of the connector, such as board to board and line to line. Levels are used to learn and classify connectors
4 connector manufacturers
Top 10 connector manufacturers in the world in 1999
Tyco (AMP/Thomas & Betts/Augat)
Molex
FCI/Berg
Foxconn (Hon Hai)
Amphenol
JST
Hirose
3M
ITT Cannon
JAE